Author: AnthonyJK

Why I-49 Connector Should Go Beyond “More Than Standard”: An Open Letter Response To Shawn Wilson

Dear Secretary Wilson:

I am someone who has followed intimately the progress of the I-49 Lafayette Connector freeway project since its inception; and I understand all of the controversy and battles that have ensued in the development of this project. Therefore, I can totally understand the frustration you must be feeling over the criticism that your agency and the consultants that you paid to direct the Conceptual Design/CSS/Supplemental EIS processes for this vital and important freeway project for Lafayette.

Nevertheless, I must take some bit of exception to your latest article that was posted at the Lafayette Connector website (and cross-posted to the Lafayette Advertiser), where you defend the current process against criticism from both Lafayette Consolidated Government officials and some in the public who question the depth of the current process.

I will use the text of your article as a foundation for my friendly rebuttal.

I will note from the beginning that I am and have been a strong and unswerving supporter of the Connector project alignment as approved through Lafayette, and am not a supporter of using any bypass alternative around the city, such as the Teche Ridge Bypass. In my view the Connector alignment is the most cost-efficient, most effective, and most balanced alignment for getting I-49 through Lafayette and completing the ultimate extension to New Orleans.

Nevertheless, even as a supporter of the current alignment, I find myself agreeing with the friendly yet critical editorial posted by the Advertiser that prompted your reply. There are several issues that I have with the current process and the implication that LADOTD and Lafayette Connector Partners are ignoring and dismissing the legitimate efforts of local groups and LCG agencies to improve upon the approved design concepts.

Here’s how your editorial rebuttal to the Advertiser began (The link to the original Advertiser editorial has been added by me; since it was added to the paper’s repost of your followup):

I was disappointed after reading an Editorial published by The Advertiser on Dec. 22, 2016, as the hard work of citizens and DOTD was dismissed by a failure to present facts and instead peddled misrepresentations.

It suggested “…a lack of interest from state officials about what local people have to say…”

FACT: We’ve held 30 Stakeholder Interviews, 29 Community, Technical, and Executive Meetings, 5 Public Meetings, and 24 structured interactions with various groups.  As of today, 1,164 Public Comments are recorded with 6,360 recorded participant responses from the Vision and Values Workshop.

We’ve responded in earnest to the community’s feedback, altering schedules, designs and concepts to better reflect the desires and concerns shared with us. Questions regarding how community input is being used strike me as odd; the design concepts now under consideration are based on community feedback. These are Lafayette’s ideas, not DOTD’s.

This came at a cost, in both time and money, and was a necessary step to advance the project.  If we were not interested, would we have undertaken such an effort just to reject all ideas?  Absolutely not.

The “misrepresentations” you decry, Secretary Wilson, are actually legitimate concerns by Lafayette citizens and Lafayette Consolidated Government agencies that have been given less than an open chance to offer their alternatives to the design alternatives that have emerged from the Tier II analysis. The four proposed Concept Alternatives that your consultants produced do represent a response to feedback and critique from local officials…but, some can legitimately question whether these alternatives really address the objections and issues raised.

The biggest issue, in my view, is the dismissive attitude that the LCP consultants seem to have towards the Evangeline Thruway Redevelopment Team, the agency that was endowed by LCG with the goals of incorporating the Connector freeway within its environment and the neighborhoods that would be directly impacted by its footprint. Through the Evangeline Corridor Initiative program that was funded in large part through a US Department of Transportation TIGER grant, they have come up with their own proposals for designing the Connector to fully integrate with the central core of Lafayette. The ECI has the full endorsement and support of the LCG, and is fully empowered through the original Joint Cooperative Agreement that was endorsed by all agencies (DOTD, FHWA, and LCG) involved in the design of the project as part of the conditions of the 2003 Record of Decision approving this project.

And yet, in countless venues, the ECI’s proposals for improving and mitigating the footprint of the Connector freeway have been treated with at best a flippant “We’ll think about it” attitude, and at worst totally dismissed as irrelevant to the process.

The recent statement by new LADOTD Project Director Tim Nickel that the ETRT was not considered an “equal partner” in the Conceptual Design process, in spite of it being empowered by LCG, who is very much an equal partner, is testimony to the prevailing attitude of the consultants. It’s as if they are so offended that people like Kevin Blanchard, Robert Guercio, and the other members of the ETRT would dare to “invade their turf” in order to impose their idea on engineers…even if those ideas would have legitimate merit.

And, the alternatives for the central core produced by the consultants do indeed raise issues of how seriously LADOTD and LCP really do take legitimate friendly criticism.

It also suggested DOTD has already made up its mind about what I-49 will look like.

FACT:  Since inserting significant time in the process, in response to the community’s request, significant changes have occurred that will change the outcome.  The original plan now has 19 core area concepts with 25 potential design modifications being investigated for inclusion, many of which work well, add great value, and ALL of which have come from the public in this process. Some changes include eliminating interchanges and ramps, removing embankments, elevating structures, incorporating additional bike/pedestrian friendly elements, and enhanced protection of historic areas.

Based on the public response and technical evaluations, we narrowed the list of possible concepts down to two viable series: one based on an elevated structure and another based on a depressed/semi-depressed structure (proposed by a local advisory group).

As Secretary of DOTD, I assure you, we have not made decisions beyond what was originally approved in the original Record of Decision.  We are trusting the process to determine which of those decisions will change and what they will become. However, no one should perceive that their participation guarantees their preferred outcome.

You are correct, Secretary Wilson, in saying that no decision has been officially made on what final design for the central core section of the Connector will be implemented. However, how else can we conclude that the evidence is a bit loaded towards a bare-bones Elevated option with the way that the alternatives that have been proposed are presented?

The Concept 4 alternatives, which are two variations of the Elevated option of a mainline Connector freeway on structure, use initial cost estimates that do NOT include any consideration of any of the following: (1) building a “signature bridge” design that has strong support locally; (2) raising the height of the elevated Connector mainline further than the standard 22 feet to 30 feet, if not the desired maximum of 40 feet; (3) any consideration of provisions for Complete Streets conversion of cross streets for alternative vehicular/bicycle/pedestrian accessibility and neighborhood connectivity; (4) consideration for additional grade-separated underpasses of the BNSF/UP railroad mainline that parallels the Connector other than the existing Jefferson Street underpass; and/or (5) consideration of retaining cross-street vehicular access near St. Genevieve Church and School and the Sterling Grove Historical District.

But, this pales in comparison to the Concept 6 semi-depressed alternatives (one open, the other a “cut-and-cover” full tunnel between Taft and Second Streets). This proposal is a magnitude different than the Partially Depressed and Covered Mainline proposal that the ETRT/ECI unveiled in August in response to LCP opening up the process for further “concept modifications”. That proposal called for a much less broad embankment than the Concept 6-2 “Cut-and-Cover” alternative; shifted the surface-level Evangeline Thruway frontage road system west to directly over the mainline as an avenue-type boulevard, and allowed for increased development on both sides of the boulevard as well as increased connectivity between the Freetown-Port Rico and McComb-Veazey neighborhoods through extending some streets over the mainline. It also was flexible enough to call for intermittent park decks to cover the freeway mainline at strategic places rather than a full tunnel.

It would be more acceptable that LCP ultimately rejected the ETRT’s proposed designs if adequate reasons and justifications were made transparent and public. Problem is, no logistics for justifying either LCP’s design for the Cut-and-Cover or the rejection of the ECI’s design are given; it is simply “assumed” that the LCP alternative is the final say for any depressed design.

This begs the question of whether LCP is even open to revising the Cut-and-Cover design to better integrate and give a proper vetting to alterations proposed by the ETRT/ECI. Considering the prevailing chilling attitudes thus far from the consultants, I have little hope. Given the heated response that Mr. Nickel had at the last CSS Community Workgroup Committee hearing last December to locals merely asking questions, that last bit of hope is sinking fast.

The public involvement process of the Connector study thus far has been pretty fair and inclusive…but also feels very top-down and enforced from LCP rather than truly interactive. People have complained about not being able to ask questions to CSS meeting presenters; and the format of the meetings not allowing for even written comments is a bit stifling. Unless this is changed, it will begin to feel like LCP and DOTD is imposing their choice on Lafayette rather than engaging in a true study; which not only dissolves trust in this project when it needs it most, but is an absolute gift to those who are fundamentally opposed to this project and would much prefer I-49 diverted around the city through the Teche Ridge Bypass.

There is also the issue of the former Southern Pacific Railroad railyard site, which was recently found to be a source of contamination of Lafayette’s drinking water. Federal and state laws would require a full remediation of that site before construction of the Connector would ensue; but the level of contamination and the impact of construction on the site is still to be determined. Is there any consideration, Secretary Wilson, for the need to initiate proper analysis and, if necessary, cleanup of that site to the benefit of protecting Lafayette’s drinking water supply? That is one of the main issues that could permanently block the Connector; it probably should be addressed soon, if not now.

It was suggested that “Too few people attend meetings, too little is known about how the information working group members provide to the DOTD is used.”

When compared to other communities with similar projects, public participation here is better than par, but par is never enough.  Like many other public decision processes, such as city councils and elections, we all struggle with participation, which is why we use volunteer, appointed, and elected leaders.

As we are now nearing the end of the Tier II phase of the project, the information we get is validated and considered by technical experts and professionals based on public safety, engineering standards, constructability, and its alignment with previous decisions.  The results of the technical analysis, both positive and negative, have all been shared with members of the CSS working groups, the bottom line being that semi- or fully depressed concepts are far more complex, expensive and problematic than an elevated mainline structure. This should not have come as a surprise, but it seems for those who preferred those designs, it has been a disappointment.

The problem with that assessment, Secretary Wilson, is that there is a distinct impression that the LCP consultants are rigging the game in favor of a bare-bones Elevated option, while not even considering either the ECI Partially Depressed-Covered Mainline proposal as they originally proposed, or not considering even alterations to the LCP proposal that could reduce the heavy costs included therein. What about shifting the Evangeline Thruway surface streets to directly above the covered mainline? What about a significantly reduced embankment on the east side of the mainline that would not require the entire current Thruway couplet ROW to be taken? What about shifting the connection ramps to allow for more connectivity and extending more streets over the freeway mainline? What about splitting the Johnston Street and Louisiana Avenue connection into two distinct streets rather than one connection in order to remove horozontal clearance issues? How about only capping the freeway at designated locations with park decks, leaving the majority of the faciity uncovered, resolving ventilation/light/emergency situations? For that matter, how about considering raising the railroad on structure at the same height of the cap of the freeway mainline, allowing cross streets to pass underneath the railroad unabated and removing both a major blockage and penetration of the Freetown-Port Rico Historical District?

I would think that given the strong support for the Partially Depressed-Covered Mainline alternative locally, DOTD and LCP would have a bit more respect for the local community and at least give these proposals a much fairer vetting before dismissing them outright.

I should note that I would have no objection to an Elevated Connector freeway, provided that as many, if not all, of the enhancements for CSS and connectivity proposed by the ETRT/ECI were fully incorporated into the final design and construction. I probably would be disappointed if a depressed freeway design couldn’t be implemented, but the need for building this project the right way supersedes any disappointment I’d have. I would be far more upset if the Connector wasn’t built at all or diverted.

As for meeting attendance….it probably appears to me that those who are against this project have simply made up their minds and are boycotting the process entirely. But, that doesn’t mean that there isn’t a real problem when friendly critics aren’t given a proper voice to speak their mind and give suggestions.

It stated, “…DOTD Secretary Shawn Wilson should step in and show leadership…”

FACT:  Nearly one year ago, I agreed and authorized this process to become more open in its efforts. We expanded the process with the support of our federal partners. A characteristic of leadership is sharing decision-making responsibility and not dictating an individual opinion. Leadership is responsibly integrating data, best practices, and public opinion in a smart way to make a decision that is in the best interest for ALL involved.  The Community, Technical, and Executive committees are part of a leadership structure that is working. With Lafayette’s Parish President and APC CEO, we have jointly led a public engagement process that is unprecedented for Louisiana, one that is changing the trajectory of this project in a good way.

I do think that in this case, Secretary Wilson, you should be given full credit for developing the process. The structure of the process is working fine; it’s the communication between the consultants and the locals that is needing repair. Yes, FHWA and DOTD is paying most of the freight for this freeway, but it will be Lafayette that will feel the full benefits and issues for this massive footprint; they have to feel they have a say in the final design.

It’s also stated, “DOTD is building mistrust here.”

After a nearly three hour CWG meeting, the facilitator ended the meeting, as the agenda had been exhausted.  His closing of the meeting was not a rejection of ideas, just the end of a meeting that night.  If that offended you, we apologize.  Processes like these are not easy. They are frustrating and difficult, very complex.  A perfect public process where everyone is happy and satisfied is a unicorn standing next to the pot of gold at the end of the rainbow, yet to be found.  I will make judgment of DOTD’s effort and the process after all decisions are made.  I trust the process and I trust the people that are at the table.

FACT:  Trust in people and this process has already made this project better than when we started.

The problem with this is, Secretary Wilson, that Mr. Nickel’s abrupt cancellation of the CWG meeting last December was not the first time that LCP consultants have had to clean up some controversy. Remember when the first Project Director, Toby Picard, posted a letter challenging some members of the CWG to resign because they had suggested building a boulevard in lieu of the Connector freeway? I supported that action because it looked like Connector opponents were infiltrating the process to deliberately sabotage it with their “boulevard only” option, and only screamed about “censorship” when they were caught and called out. In addition, it was local reaction to the ETRT’s initial ideas not being included in the original 19 Refinement Alternatives that prompted Picard, after first initially dismissing ETRT as “irrelevant”, to modify the process to the current evolution today.

Certainly, in the design and evolution of a project as massive as the I-49 Lafayette Connector freeway, everyone will not get their way. It is still necessary for those who are developing this project to at the very least be transparent in their intentions, and give solid, understandable, and accurate analysis in ultimately designing and constructing this vital project. Anything else gives rocket fuel to the Sierra Club/Y-49/TecheRidgePlusBoulevard lobby who is more than itching for a legal rematch to stop this project and get their way. If you support this project as I do — and I am sure, Secretary Wilson, that you do — there needs to be a lot more listening on everyone’s part. We have one shot only to make the Connector work, so let’s do it right.

Yours sincerely,

Anthony Kennerson

 

Could The Connector Be Improved? A Few Suggestions

Although the process for the Connector freeway Conceptual Design Study has already produced plenty of suggestions for refinements and alterations, there are a few that may have been missed out on. Here’s some of my own that I think would improve the prospects.

1) Shift the north access ramps from the Evangeline Thruway frontage road system from north of Second Street to north of Mudd Avenue, and retain cross-street access for both Mudd Ave. and Simcoe Street.

The current plans for the “refinements” put forth by the LCP and DOTD drop the north exit/entrance off ramps down between Greig and Second Streets, and block off Simcoe Street altogether in order to create more space for a plaza around St. Genevieve Catholic Church and School. In addition, all the options sever Simcoe St entirely, and partially severs Mudd between the Thruway frontage system and the old northbound Thruway, which is converted into a two-way local street from Greig Street to Bellot Drive.

This has the advantage of offering a buffer zone for the Sterling Grove Historical District, but at the cost of providing vehicle/pedestrian/bicycle access across the freeway. With both Mudd and Simcoe severed, vehicles wishing to cross the freeway to access neighborhoods to the west would have to either use the Second/Third one-way couplet, or use a turnaround that would be provided just before the crossing of the rail spur north of Tissington Street.

It’s understandable why planners want to reduce vehicular access to Sterling Grove, but not at the expense of removing two vital cross-circulation arterials.

Shifting the north access ramps to before Mudd would allow both Mudd and Simcoe to retain their full access, and also allow for a full buffer for Sterling Grove that doesn’t interrupt full vehicular access.

The only drawback in this is that in order to make way for the ramps, all of the local cross streets between Mudd and Bellot Drive would have to be severed (Goldman, Hobson, Sampson); but the old Thruway could handle the transition.

2) Shift the south access ramps, which are currently planned to connect to the Thruway at Eleventh Street, to more traditional “slip ramps” south of Taft Street. 

The current LCP proposal uses traditional ramps to curve to meet the existing Evangeline Thruway couplet at Eleventh Street. These ramps are supposed to also provide the connection between the freeway and Johnston Street/Louisiana Avenue in lieu of a direct interchange.

The problem with this concept is that it conflicts with the desire of city officials to better connect the McComb-Veazey and Freetown-Port Rico neighborhoods. The two areas are separated from each other by the heavy industrialized property now occupied by Conco Distribution Company and the former Southern Pacific Railroad distribution yard property. The Evangeline Thruway Redevelopment Team (ETRT), through its Evangeline Corridor Initiative, had been looking at ways to extend some streets (such as Eleventh or Twelfth Street) across that property in order to connect McC-V and FTFR better; their proposals allow for that by shifting the access ramps between the Connector and the Thruway frontage road system further south to either south of Taft Street or south of Pinhook Road.

The LCP/DOTD Concept 4 proposals, however, nixes that by placing the south connection ramps to meet with the Thruway at its connection with Eleventh Street, essentially blocking any means of connecting McC-V with FTPR other than the existing connections of Taft Street, Pinhook Road, and Louisiana Avenue/Johnston Street. The Concept 6 proposals, if anything, are worse; they shift the Taft Street connection from Fourteenth Street to Thirteenth Street, and they totally wipe out the median of the Evangeline Thruway in order to provide for the grade changes to elevate the southbound frontage road to cross the depressed freeway mainline.

The ECI’s Partially Depressed/Covered option solves that problem by shifting the Thruway from its existing couplet paralleling the freeway to directly over the freeway mainline, which would allow the existing Thruway roadways to be converted to local two-way streets; and also allowing enough of a transition over the embankment to extend some cross streets. Moving the south connection ramps to south of Taft and north of Pinhook allows for that option to work.

The ECI’s Elevated option even shifts the south connection ramps even further south to south of Pinhook Road; but that brings a conflict with the connection to East University Avenue/Surrey Street, which serves Lafayette Regional Airport. (But, more on that later.)

In any case, shifting the south ramps to south of Taft, whatever the final design would be, could for those very reasons open up more and better connections between McComb-Veazey and Freetown-Port Rico.

3) Resolve access to the Sterling Grove Historical District and the abutting neighborhood to its west across the proposed freeway ROW by restoring cross-street access via Mudd Avenue and Simcoe Street.

The main issue here is that in order to protect Sterling Grove and the St. Genevieve Church and School from more direct impacts, LCP’s planners designed to cut access through that neighborhood by severing both Mudd Avenue and Simcoe Street. The Concept 4 alternatives do allow for Mudd to be connected to both the southbound and realigned northbound frontage roadways, but still severs Mudd east of the new northbound roadway. The Concept 6 alternatives completely sever Mudd between the northbound and southbound roadways. In addition, both concepts completely sever Simcoe Street to allow for the north ramp connections to meet the frontage road at Second Street; Simcoe is diverted to the Second/Third one-way couplet and then either to a realigned Chestnut Street (for the elevated Concept 4 alternatives) or to Grant Street (for the depressed Concept 6 alternatives).

Naturally, this creates a major issue for Sterling Grove residents wanting to access the neighborhood on the other side of the Thruway, and vice versa. Obviously, you don’t want to encourage major traffic to blow through Sterling Grove using Mudd Avenue, but Mudd is still a significant collector arterial both west and east; and Simcoe is the principal connector between Sterling Grove and another historical neighborhood, Parkside.

Solution 1) as defined above (shifting the north connection ramps to north of Mudd Avenue) would do plenty to resolve the situation, since that would allow for retaining both Mudd and Simcoe as cross connections. Alongside that, the potential issue of Mudd Avenue becoming a convenient speed magnet through Sterling Grove can be resolved through two means: remaking Mudd from the Thruway to Louisiana Avenue into a Complete Streets corridor, and building a roundabout between Mudd and the former southbound Thruway/future local street.

One other issue is that shifting the connection ramps would cause some of the existing cross streets (Hobson Street, Sampson Street, Goldman Street) to be severed between the frontage road Thruway system (although, the existing former northbound Thruway converted to a local street could still serve as a buffer). The benefits of keeping Simcoe and Mudd open would in my view offset this..and you could keep Bellot Drive and Tissington Street open as cross streets or add some turnarounds to reinforce access.

4) Consider elevating the BNSF/UP railroad line at its current ROW on structure through downtown Lafayette, allowing the cross streets to pass underneath at ground level.

The handling of the BNSF/UP main railroad line through Lafayette has been one of the most contentious issues with the Connector freeway design. The originally approved 2003 FEIS/ROD design had two direct single point diamond interchanges between the freeway and both a merger of the Second Street/Third Street one-way couplet and Johnston Street; with the interchanging cross streets depressed to pass underneath the railroad line. The original Base Case also severed the Sixth Street/Lee Avenue crossing in order to allow room for the ramps to the two downtown interchanges.

This was altered in the Conceptual Alternatives Enhancements revisions to eliminate the direct interchanges altogether, restore the Sixth/Lee crossing, and devise new means of connecting the cross streets through the freeway ROW. Under the Elevated concepts, it’s a simple deal: the cross streets pass underneath the elevated structure at grade level as they do now; with only the option of a depressed underpass at Johnston Street offered to improve access. Under the Partially Depressed and Cut-and-Cover concepts put forth by LCP/LADOTD, it gets a bit more complicated; 2nd/3rd. Jefferson, and Lee/Sixth get at-grade crossings of the railroad, but Johnston gets an overpass that penetrates the Freetown-Port Rico Historical District to such an extent that both the Johnston Street intersections with Garfield Street and Lincoln Street would have to be elevated either on fill or structure.

What all of those proposals share is the common design that the railroad remains at current level in its existing ROW. One design alternative that was rejected as part of the Partially Depressed series would have shifted the railroad ROW about 50 to 100 feet to the west of the current position, then lowered it 10 feet to the same level as the depressed freeway. That proved to be too costly and too destructive, as it would severely affect existing crossings outside of downtown Lafayette.

However, there is one alternative design that has not been considered that really should be: raising the BNSF/UP railroad line on structure throughout the downtown area so that the cross streets can pass underneath at existing ground level. It’s not an unprecedented feat for commercial rail lines to be elevated above ground level and seperated from ground-level traffic; Jackson, Mississippi has a similar system using the Canadian National/Illinois Central rail line, and a similar structure is planned for the BNSF line through Tupelo, Mississippi.

The idea generally is to begin the elevated structure just east of the current North University Avenue underpass, then gradually grade it so that it is elevated at least 15 feet from the St. Antoine Street crossing through the curve at Pierce Street and Mudd Avenue/Cameron Street and Simcoe Street, then reaching its full peak of  20 foot elevation downtown between Jefferson and Johnston Street, with a platform built across from or at the Rosa Parks Transportation Center for the Amtrak terminal there, then gradually lowering it back to grade level near the existing East University Avenue underpass. All the major cross streets from St. Antoine Street to Pinhook Road would remain open to pass underneath the mainline; the connection to the Louisiana and Delta Railroad spur to Breaux Bridge would remain at its existing ground level.

The advantages to raising the railroad would be obvious from a noise and traffic standpoint; but it would be especially beneficial for both Downtown Lafayette and the surrounding neighborhoods because the existing ground level track could still be converted into a passenger-based light-rail system that could potentially be extended through Lafayette.

Raising the railroad would be especially beneficial with the ECI Partially Depressed/Covered Mainline proposal, because with the railroad elevated and the cross streets returning to ground level underneath without the conflicts of safety, the impacts on Freetown-Port Rico would be greatly reduced if not eliminated. Also, the Rosa Parks/Amtrak depot platform could be extended to match the height of the elevated embankment needed to mask the semi-submerged freeway mainline.

An alternative to this would be to realign the BNSF-UP mainline to follow the L&D RR mainline to Breaux Bridge, then utilize the abandoned UP line running along the Teche-Coteau Ridge along LA 31 to reconnect with the mainline near New Iberia; and convert the BNSF mainline between Lafayette and New Iberia to a commuter rail/Amtrak/light rail line. This would create its own issues of noise impacts along the L&D line, as well as cost issues.

5) Consolidate the University/Surrey and Kaliste Saloom Road interchanges into one interchange system, and simplify the ramp exit/entrance system to reduce weaving and flood abatement issues.

The southern terminus of the Connector freeway has its own multiple issues as well. There is the bisecting of the flight path of Runway 11-29 of Lafayette Regional Airport; the crossing of the Vermilion River and its floodplain that has been the source of heavy flooding of late, and there is the expense of the Kaliste Saloom Road interchange that has to cross over the BNSF-UP railroad mainline and Hugh Wallis Road and connect with the frontage road system as well as mainline I-49 to maintain access to LRT and the Episcopal School of Acadiana. There is also the conflict involving the Adrien Vega Acadiana Dodge auto dealership, which is located on the Thruway directly across from LFT.

The illustration above shows the design for that section that was approved in the 2003 FEIS/ROD. Note how the directional ramps for the Kaliste Saloom Road interchange connect with both the frontage roads and the I-49 Connector mainline to/from the north, and also how the southbound frontage road is routed around the rear of the Acadiana Dodge dealership. Note also how the Petroleum Helicopters International training facility right across from the current intersection of US 90 with Kaliste Saloom Road effectively limits any ROW acquisition south of that interchange.

Some modifications in design have been proposed and are under consideration for this segment. Due to new regulations involving building runway extensions in wetlands, the University/Surrey interchange design is being modified so that the existing Runway Protection Zone for LFT’s Runway 11-29 will be retained and no extension required. This would entail the possibility of having University/Surrey passing over a depressed I-49 mainline, or depressing University/Surrey to the point that the I-49 overpass doesn’t invade the current RPZ. As for Acadiana Dodge, an alternative design is being offered that shifts the southbound frontage road to a more conventional frontage road format in front of the facility. Minor refinements to the access road connecting Hugh Wallis Road to Kaliste Saloom Road in order to adjust for a new hotel that was built in the original ROW as well as access to the ESA are also being considered.

Further complicating matters are the proposals of the ECI for redeveloping the Vermilion River basin (which includes Beaver Park, Heymann Park, and Vermilionville) as a major recreation area. Their ideas include elevating the mainline to allow for direct vehicular and pedestrian access to connect the park areas now severed by the Thruway; incorporating the former Trappey’s plant on the west side near Beaver Park into the new recreational facility, and building a “Riverwalk” facility connecting the two park areas together.

The proximity of interchange ramps between the Kaliste Saloom and University/Surrey interchanges also may become an issue with interchange spacing, especially since they may also conflict with any possible shift of the south connection ramps to the Evangeline Thruway for downtown to south of Taft Street.

I would think that the ramp system could be greatly simplified by eliminating and consolidating some ramp access between Pinhook Road and south of Kaliste Saloom Road. I’d place the south ramp connection just south of Taft Street; add a ramp connection to University/Surrey just south of the Vermilion River crossing, eliminate the direct ramps to the I-49 mainline to Kaliste Saloom to/from the north, and combine University/Surrey and Kaliste Saloom into one interchange system connection.

It could also be considered to reduce and eliminate the directional interchange at Kaliste Saloom in favor of an elevated tight diamond/frontage road connection where Kaliste Saloom and the frontage roads would have an elevated connection so that the former could cross over the railroad and Hugh Wallis Road on structure. A similar design is being planned for the downstream interchange of US 90/Future I-49 South with Verot School Road.  The main issue, though, would be providing access to the PHI facility on the opposite side, and perhaps some additional ROW requirements.

That’s only a sample of my own suggestions; feel free to add your own. As long as they don’t involve Teche Ridge or downgrading to a boulevard…that’s still a non-starter with me.

How LADOTD Arrogance And Ramrodding The Elevated Option Could Kill The Connector Freeway Project

I just recently read this morning’s article from the Lafayette Advertiser by Claire Taylor over the ruckus that took place yesterday at the latest I-49 Connector Community Work Group meeting…and it has me fuming.

It is getting more and more obvious that the LADOTD, through their consultant group Lafayette Connector Partners, is insistent on ramming a bare bones Elevated Option freeway down the collective throats of Lafayette citizens, with little if any concern or respect for those citizens who would be affected, or those who actually want to make the Connector freeway work the best for Lafayette.

Ms. Taylor’s article documents the tense and often heated arguments that took place between LADOTD Project Manager Tim Nickel and some members of the CWG, concerning questions they had about the Tier II analysis of the four alternatives put forth.  In the end, Nickel ignored their questions, finished the presentation over their heads, and abruptly dismissed the meeting, leaving many members in shock.

More from Ms. Taylor’s article:

When Interstate 49 [C]onnector committee members asked questions and voiced concerns Thursday about the planning  process and level of public input, the state highway department’s project manager ignored their questions and adjourned the meeting.

Tim Nickel with the Louisiana Department of Transportation and Development appeared to become frustrated with questions by members of the I-49 Lafayette community working group. As committee members asked questions near the end of a two-hour meeting, Nickel returned to a PowerPoint presentation, speaking over over their questions, then abruptly adjourned the meeting.

“We’re citizens who were invited to attend and participate, and DOTD shut us down with questions still to be asked,” CWG committee member John Arceneaux said afterwards.

Margaret Trahan, executive director of United Way of Acadiana and a CWG member, added, “Tonight’s meeting was very frustrating. I’m not leaving with a clear understanding of why I’m here.”

The main frustration that the CWG members had was with the analysis of the Concept 6 series of alternatives, in particular the Concept 6-2 “Cut-and-Cover” alternative that called for a full 1-1/2 mile covered tunnel with jet engine ventilation. That alternative was vetted to be the most expensive for the downtown section between Pinhook Road and the Louisiana & Delta Railroad spur crossing, at more than $800 million dollars. By contrast, the Series 4 Elevated Options, which call for an continuously elevated freeway throughout the corridor, was vetted to cost less than $430-450 million dollars….but that did not include any consideration of a “signature bridge” or alterations for neighborhood connectivity or pedestrian/bicycle accessability.

The meeting also exposed the conflict between the LCP team authorized by LADOTD to design the project and the Evangeline Thruway Redevelopment Team (ETRT), the group empowered by Lafayette City-Parish Consolidated Government to develop means to incorporate the Connector project with all the neighborhoods affected. The ETRT, through their Evangeline Corridor Initiative, had created their own separate design concepts for meeting that need; one each for the two concept design series that had advanced to the Tier II study analysis process. As a result, the ETRT had developed their own Cut-and-Cover proposal that ended up radically different than the Concept 6-2 “Cut-and-Cover” tunnel that was ultimately proposed by LCP/DOTD.

The main frustration from the CWG members was about why LCP didn’t allow for consideration in their cost analysis of the conceptual alternatives for additional funding for the “signature bridge” and other CSS design/connectivity components; and also why ETRT’s partial Cut-and-Cover proposal wasn’t given a better vetting or a chance to be altered.

Nickel’s response was that the LCP and consultant team couldn’t give an answer at that point because the process was still ongoing; and that the decisions would be done in January when final “hybrid” alternatives for the entire corridor would be created for Tier III and Supplemental EIS analysis and final selection.

In an earlier article for the Advertiser, Ms. Taylor summarized the situation nicely:

The tunnel version proposed by ETRT after meeting with residents near the interstate route wasn’t intended to be a 1.5-mile long tunnel, Blanchard said, but a partial cut and cover to reduce noise and provide connectivity. Instead of a cost estimate for a partial cut and cover, consultants provide a price for a 1.5-mile long tunnel with a large embankment and jet engine turbine. It includes all the bells and whistles, he said.

The elevated version is a bare-bones model that doesn’t include the cost of a signature bridge, pedestrian and bike lanes, or improvements along Evangeline Thruway such as a grand boulevard. Blanchard said it was a surprise to the ETRT Nov. 30 when Tim Nickel, project manager with the Louisiana Department of Transportation and Development, said he couldn’t commit to paying for bike and pedestrian paths even if they are inside the project right of way.

The group asked for a more limited cost estimate for the partial cut and cover design that would include less tunnel and less embankment than a large tunnel.

“The concern is the 4 series cost estimates, because they don’t include the cost of components such as the signature bridge, are artificially low, while the costs of 6.2, because they may include all the ‘bells and whistles,’ are artificially high,” Blanchard wrote.

The ETRT, Blanchard said, also raised many questions about the signature bridge, which has substantial community support but was not included in the four designs the consulting team advanced in the planning process.

Nickel also, as did his predecessor Toby Picard, dismissed a bit causticly the ETRT’s role in analysis of the conceptual alternatives, stating that they weren’t “an equal partner” in the consideration for a final Connector freeway alternative. Never mind that the ETRT is fully empowered by the original Joint Collective Agreement signed by LADOTD, FHWA, and LCG to provide direct feedback on the project’s impacts on the abutting neighborhoods.

When ETRT member Kevin Blanchard asked Nickel if he would commit to saying that the Series 6 alternatives — especially the Cut-and-Cover alternative — would be allowed to be altered by ETRT or would be eliminated in favor of the Elevated Series 4 concepts, Nickel was noncommited, saying that that decision would be reached by then.

CWG members also expressed frustration with the limited public feedback allowed at their meetings; public comment was limited to only notes on cards, with no time given for verbal discussion. In addition, the membership of the CWG has significantly dwindled down from its initial 60 members down to around 11, and most feedback from the Open House Meeting was limited to comments from other committee members or submitted from attendees at that meeting.

The only compromise that Nickel would give to the ETRT was to allow their objections to be put in the public record at the meeting; but there was no commitment by him to even discuss any of their concerns.

And, it’s not the first time that the LCP has been frosty to the ETRT; when the ECI originally introduced their alternate concepts for the freeway back in August, then Project Manager Toby Picard dismissed them as irrelevant to the process. After an uproar by Lafayette Parish Govermment Councilman Bruce Conque, Picard backed off and reluctantly allowed the ETRT/ECI alternatives into consideration.

But, it appears that LADOTD is still under the impression that only the cheapest, bare bones Connector project will be able to get funding in these austere fiscal days, and that they are driven to push the Elevated option down the throats of Lafayette without any consideration for what may be better.

This is playing with fire, because if LADOTD can’t handle the friendly criticism and analysis of those who do want the Connector built but done right for the citizens of Lafayette, then how will they react when the community revolts in opposition and joins the Teche Ridge Bypass lobby with their ultimate lawsuits and obstruction? The resulting delays could potentially kill not just the best chance to build I-49 through Lafayette, but possibly kill the entire I-49 South extension to New Orleans.

DOTD really needs to take heed and listen to the people for a change before they lose everything.

Chicot Aquifer Found To Be Partially Contaminated At Former Railyard Site: A Potential Setback For The Connector?

Updated…scroll to bottom.

This is a development that could have huge ramifications for the Connector freeway down the road; enough so to further inflame and incite support for the Teche Ridge Bypass if officials don’t resolve this quickly.

The Advertiser just reposted an article from KLFY.com (the local Lafayette CBS TV affiliate) on an ongoing lawsuit being litigated against the Union Pacific Railroad over the former Southern Pacific Railroad distribution yard facility near Johnston Street. The lawsuit claims that the former railyard site is now a source of potential contamination of the Chicot Aquifer, which is the sole source for Lafayette’s drinking water. This directly impacts the Connector freeway because the approved alternative from the 2003 Record of Decision and the modifications proposed during the current Conceptual Design Study and Supplemental Environmental Impact Statement processes all traverse some portion of the former railyard property between Johnston Street and Taft Street.

On Wednesday, one of the lawyers mitigating the lawsuit announced in a press conference that he had confirmed that some contamination of the Aquifer did indeed take place at the railyard, and that some of the contaminating substances had made their way into one of Lafayette’s water well intakes.

Here is some snippets from the KLFY article, that was also reposted over at the Lafayette Advertiser:

Water well 16 in Lafayette has tested positive for contamination, and now the city is being advised to take action to keep contaminated drinking water from reaching residents.

Lawyer William Goodell gave a stern warning to the city and its residents Wednesday night, KLFY reports.

“Me and my co-counsel are here to get this aquifer cleaned up, and to protect the environment, and we are not going to go away till it’s cleaned up,” said Goodell.

Goddell did note that the contamination was not serious enough as of now to warrant danger, but without immediate remediation and cleanup, things could get worse.

The ramifications for the Connector freeway are huge, and potentially even fatal, due to the ROW of the potential freeway traversing the SP rail yard property. Environmental regulations require that “brownfield” sites found to have induced contamination must be fully remediated and cleaned up before any construction of a facility can begin; or, if remedial steps to prevent contamination can’t be found, alternative routes that avoid the contaminated area must be sought. The original 2003 ROD for the Connector does acknowledge the possibility of contamination of the SP/UP rail site, but states that standard practices, special construction techniques, and direct consultation with the federal EPA and the state Department of Environmental Quality (LaDEQ) can be used to protect the aquifer from contamination.

Nevertheless, opponents of the Connector project have cited the protection of the Chicot Aquifer as one of the main reasons for opposing the freeway project and re-routing the freeway around Lafayette, mostly supporting the Teche Ridge Bypass alternative running east along St. Martin Parish. One of the plantiffs in the current lawsuit is the Greater Lafayette Sierra Club, which has been one of the principal leads in opposition to the Connector project.

What could make this a possibly fatal blow to the project is that if it is found that contamination has reached the level of the aquifer, which is based nearly 40 feet below ground level and protected by a clay layer, it would make it less effective to merely remove and process elsewhere contaminated soils. The standard procedure for minor contamination is either to dig up the contaminants, or dig down to a certain level (usually 15 feet), cap with a concrete or other barrier, then replace with clean soils. Special techniques for drilling for pilings that would hold the piers needed to maintain the elevated structures required for the freeway would protect against future contamination.

The problem is, though, if the contamination is so severe that it is directly penetrating the aquifer levels, then merely digging out becomes impossible, and only an “in place” remediation is possible. In that case, the project would have to be moved or adjusted to avoid entirely the contaminated site.

It is possible that a full cleanup can be done for the SP/UP facility prior to construction of the Connector facility, avoiding the need for moving the facility. Indeed, the regulations for constructing the facility requires a full remediation before one inch of soil can be turned.

However, this development does give a huge hammer to those who oppose the Connector, and probably clinches the likelihood of a second lawsuit against FHWA and LADOTD to block the expected approval of the refined RR-4 alternative and for restarting studies to include Teche Ridge. The first lawsuit was filed in 2003 after the initial ROD, but was thrown out in Federal court, including an appeal that was turned down.

As always, more on this development here as it breaks.

UPDATE (1-14-2017):

I recently discovered this press release from attorney William J. Goddell, Jr., who is the lead attorney for the plaintiffs filing the suit against Union Pacific Railroad among others over the contamination of Lafayette water supply from the former Southern Pacific Railroad rail yard property. It details the level of contamination that Goddell’s research found at the former rail yard site, and the expectation for further documentation from both the state Department of Environmental Quality (DEQ) and Lafayette Consolidated Government’s Lafayette Utilities System (LUS), which oversees the local protection of the Chicot Aquifer. Again, this is important because the rail yard site cuts directly through the approved alignment of the Connector freeway, and the fear of breaching the protection for the aquifer through driving piles for the proposed alignment is one of the principal objections by those opposing the project and supporting alternatives such as the Teche Ridge or Lafayette Regional Expressway bypasses.

The original document was released by Goddell at a December 14, 2016, press conference that was covered by KATC-TV; their report is here. The report also includes a snippet of Goddell speaking at the press confrence.

 

The Battle Of “The Covers”: ECI’s Partially Depressed Covered vs. LCP’s “Cut-and-Cover”

One interesting byproduct so far of the I-49 Lafayette Connector freeway design process is the emerging differences that are developing between the proposals put forth by the main Lafayette Connector Partners (LCP) design team paid by LADOTD to design the final product, and the Evangeline Thruway Redevelopment Team (ETRT) proposals floated through their Evangeline Corridor Initiative (ECI) process.

As many well know, the ECI was created by the ETRT to satisfy the mandate of the US Department of Transportation TIGER grant they had been awarded back in 2014 to study the best means of integrating the Connector freeway into the broader Lafayette community and better connect the abutting neighborhoods that would be affected by the project. That is a different mandate from the LCP, who is being paid by LADOTD to actually put forth preliminary design and engineering for the project.

It was mainly the ECI and ETRT which had raised concerns about the initially approved design that was vetted through a Record of Decision in 2003; as a result of their concerns, LADOTD was induced to add a series of design modifications and develop alternative concepts for the core downtown segment of the freeway. As a result of the process, four alternative concepts remain for consideration:

— 2 Elevated Freeway options (originally Concept Group 4), one with the Evangeline Thruway remaining as a one-way couplet outside of the freeway ROW (Concept 4-1), the other with the Thruway converted into an urban boulevard (Concept 4-2); and

— 2 Partially Depressed Freeway options (Concept Group 6), one with the freeway depressed on an open trench (Concept 6-1), and the other with the freeway completely capped as a tunnel for 1-1/2 miles (Concept 6-2).

The main issue, however, is that the proposals from LCP are a bit different from what the ECI/ETRT TIGER team has been promoting, and that has caused a bit of concern. Yesterday, Claire Taylor posted an article over at the Lafayette Advertiser detailing the ETRT’s expressed questions for the LCP over their most recent proposals.

The ECI had issued its final and adopted Charrette Report in late October detailing their proposals for neighborhood connectivity alongside the Connector. It appears below (accessible as a Scribd document):

It was right about the same time that the LCP held their second Open House Public Meeting to reveal to the public both the 4 Connector Concept Alternatives and the resolution of Possible Design Modifications (PDM’s) for subsegments of the freeway proposal. A full presentation of both appears below:

 

This post is to discuss the differences between the official LCP alternatives and those put forth by the ECI, and why they may matter a great deal down the road.

First let’s look at the Elevated options, starting with the LCP Concept 4 alternatives:

Both C4 alternatives utilize an elevated freeway through the core downtown area, and use ramp pairs to the Evangeline Thruway (north connections before Second Street, south connections to the Thruway at Eleventh Street). The difference is that Concept 4-1 retains the existing Evangeline Thruway couplet south of Jefferson Street to near Taft Street; while Concept 4-2 converts that section into an “urban boulevard” running down the southbound Thruway ROW (the existing northbound Thruway roadway south of Simcoe Street is converted back to a two-way local street).

Generally similar is the ECI’s approach to the Elevated Mainline option..but there are some differences.

4

The main major deviation between the C4-2 proposal and the ECI proposal is that with the ECI’s concept, the northern ramp connection with the Connector is pushed back further north to north of Mudd Avenue rather than Second Street; and that both Mudd Avenue is kept open and free flowing underneath the elevated mainline. Under the ECI’s proposal, the south connecting ramps are also shifted further southward to south of Pinhook Road, enabling more connections between Johnston Street/Louisiana Avenue and Taft Street/Fourteenth Street underneath the freeway. This was done to better connect the Freetown-Port Rico and McComb-Veazey neighborhoods. Also notice that like C4-2, the ECI Elevated Mainline proposal assumes a boulevard utilizing the southbound Thruway ROW, and that Simcoe Street is severed and realigned to allow more space at St. Genevieve Church for an open space plaza to mitigate the visual effects.

But those are minor quabbles compared to the differences between the Depressed proposals by both groups. First, the two LCP Concept 6 alternatives:

The main features of the C6 concepts are: 1) depressing the Connector mainline 10 feet below ground level, and adding 10 more feet of vertical clearance above ground level to create 20 feet of vertical clearance; having cross streets pass over the depressed freeway (and, in the case of Johnston Street, over the parallel BNSF/UP rail line as well); 2) elevating and realigning the southbound Evangeline Thruway to allow for raised connections with all the major cross streets; 3) realigning Taft Street to connect with Thirteenth Street rather than Fourteenth Street to better fit the ultimate south ramp connections; and 4) severing both Mudd Avenue and Simcoe Street across the freeway due to insufficient vertical clearance and concern about penetrating the Sterling Grove Historical District. The main difference is that C6-1 uses an open trench for the mainline with bridge structures crossing the freeway; while C6-2 uses an earthen embankment to completely cover the mainline, with a full tunnel structure directly underneath.

That is a significant radical difference from the Partially Depressed/Covered Mainline proposal originally brought forth by the ECI/ETRT team.

The original concept for the “Cut-and-Cover” proposal from the ECI implied only a limited embankment extending only as far as the southbound Thruway and the railroad, with all cross streets returning to grade to cross the railroad. (That proved to be infeasible for Johnston Street, prompting the LCP proposal to add an railroad overpass at that location.) Their proposal also included the option of realigning the Thruway frontage roads directly on top of or immediately flanking the depressed mainline structure, reverting both original roadways using the current Thruway to local streets. There was also an option for a surface boulevard taking in the southbound Thruway as with the Elevated concepts. In addition, similar to the ECI’s Elevated options, the ramp connections to the Thruway were set to north of Mudd Avenue and south of Taft Street, with both Mudd and Simcoe remaining open and free flowing over the covered freeway. Finally, in lieu of a complete tunnel, there were options for a partially covered or cantilevered mainline to avoid ventilation issues with a closed tunnel.

LCP does give as part of their presentation during the November Open House Public Meeting a decent explanation of why the ECI option for an at-grade Johnston Street crossing of the BNSF railroad is not feasible, and why a crossing that directly penetrated the Freetown – Port Rico Historic District was selected as the most viable option. They are a bit less open, though, on why expanding the depressed option to allow Mudd Avenue and Simcoe Street to cross over was not allowed, as well as why the cross connections between Taft and Johnston were not feasible. My guess is that interchange spacing and possible issues with excessive gradients were the main reasons for rejecting ECI’s approach. There was also the issue of penetrating the FPRHD, although why that wasn’t considered a problem for the Johnston Street crossing would then be a decent question to ask.

This wasn’t the first time that there was conflict between the ETRT and the LCP, either. When the ECI first offered up the Partially Depressed and Elevated options, they got a very chilly reception from then LADOTD Project Manager Toby Picard; he essentially accused ETRT of jumping out of their lane and overstepping their boundaries. Apparently, they were only supposed to act on the connectivity portion for the neighborhoods after LADOTD had selected a final alternative. ETRT, however, is backed in its mandate by Lafayette City-Parish Consolidated Government, which by law is required to approve any design for the Connector freeway under the terms of the Joint Agreement that was signed by all parties as part of the Record of Decision in 2003. (Picard ultimately blinked and allowed ETRT’s concerns to be placed on the record; he then left the project and DOTD entirely, claiming “personal reasons”.)

The Taylor article in the Advertiser quotes an email from ETRT member Kevin Blanchard to the LCP and LADOTD expressing concern that before any options are eliminated, the ECI’s questions about the method to the analysis of the alternatives are answered.

One of their main concerns was the cost projections for the four concept alternatives. The C6-2 “Cut-and-Cover” alternative has far and away the most expense, but that includes both the front end construction costs and the back end operations and maintenance costs of the full tunnel. The Elevated options, though, do not include any consideration for the “Signature Bridge” costs; LCP has said that that would be considered later on in the process. The main fear is that LADOTD might invoke financial concerns to drop many of the ECI’s proposals in order to go along with a basic design for the Elevated options.

Kevin Blanchard, who is on the ETRT team, recently posted an article at the Lafayette Independent where he directly states his concerns to LCP about the process, and calls for not eliminating any options until their questions are answered fully. He also proposes some variations to the Depressed options to remove the need for a full tunnel, and also addresses the Johnston Street overpass issues with Freetown – Port Rico and the BNSF/UP railroad. Another idea floated about is converting Johnston Street into a “Complete Streets” corridor with a reduced design speed, which would allow for a gradient tight enough to reduce the penetration of FPRHD.

In any case, this is an issue that will continue to be hashed out as the Connector design process evolves. Updates as they come in.

Why Looping I-49 Around Lafayette Is Not As Good As It Sounds: A Response To Roger Peak And Y-49

Just as it is becoming more and more clear that an elevated I-49 Connector through Lafayette is the most feasible cost-effective option for building the freeway; it is just as clear that the opposition to this project is as loud as it has been since the concept has been planned.

While most opposition to the Connector is mostly based on sheer NIMBYism of not wanting an elevated structure next to their neighborhood; there are also legitimate concerns about contamination of the Chicot Aquifier, which supplies Lafayette’s drinking water, as well as the costs of constructing the freeway, as opposed to the combination of looping the freeway around Lafayette (most often proposed through the Teche Ridge Bypass alternate through St. Martin Parish, less proposed through the Lafayette Regional Expressway loop to the west around Lafayette’s perimeter). As the process of Conceptual Design and the Supplemental Environmental Impact study proceeds, the opposition to the Connector has become a bit more active in stating their views.

Over at the Sierra Club’s “Y-49” Facebook page, a citizen and long-time opponent of the Connector freeway named Roger Peak just posted a letter “for the record” that he sent to the Lafayette Connector Partners (the group entrusted by LADOTD and FHWA to oversee the design process for the project) during their most recent Open House Public Meeting. The letter, actually written by another opponent of the Connector named Dennis Sullivan, essentializes the main points of opposition to the Connector and support for a combination of a bypass and “improvements” to the Evangeline Thruway via a “boulevard”. The full letter is below:

My goal here is not to disrespect Mr. Peak, Mr. Sullivan, or any other opponent of the Connector freeway or deny them their right as citizens to protest and oppose this project. However, as an proponent of the Connector, I do feel it’s within my reason to challenge some of Mr. Sullivan’s points and statements. I will critique as I follow his letter.

1) Chicot Aquifer Protection

First, the relevant portion of Mr. Sullivan’s letter:

The 2003 Record of Decision for the Connector project stated that there was more than adequate protection for the Chicot Aquifer since the clay layer that protects the permeable area runs nearly 40 to 60 feet thick below ground level. Pilings that would be driven for the elevated structure would go no deeper than 30-35 feet, well before the aquifier surface would be breached; and universally approved best practices and standard procedures would be enabled and executed to ensure that the aquifer is fully protected.

The one main area of concern has always been the site of the former Southern Pacific Railroad distribution yard, where contamination of the soil just below the surface has been found and documented. Opponents of the Connector cite correctly the risk of pilings surrounding the contaminated surface breaching the clay protective layer, threatening the aquifer. LADOTD has responded that the site is eligible for a full remediational cleanup, and that standard practices and procedures will be undertaken to protect the aquifer levels.

LADOTD and the Connector Design Team recently issued a presentation documenting all the issues of protecting the Chicot Aquifer and the means of protections available. The presentation is presented below.

More than likely, this will not ease the concerns of Connector opponents, who are simply locked in to opposing the freeway through Lafayette under any circumstances. However, to say that LADOTD or FHWA is simply not concerned at all about protecting the aquifer is simply not true. Also, invoking the Flint, Michigan water contamination debacle, which was a large scale man-made disaster based on political motives of privatization rather than an isolated incident of a small breach of property, is emotional scaremongering at its worst.

It should also be noted that there is a current standing lawsuit ongoing against Union Pacific Railroad (the current owners of the property of the former Southern Pacific railyard) to have them pay the full costs of any remediation and clean up of that facility. Since remediation and cleanup is a mandated requirement for constructing the Connector freeway, regardless of whomever ultimately pays the bill, using this as a reason for opposing the freeway is a bit deflective reasoning.

2) The Evangeline Thruway and the Connector Freeway: Heartbeats or Heart Stakes??

Here, Mr. Sullivan (and by relay, Mr. Peak) invokes the construction of the original Evangeline Thruway through Lafayette during the 1950’s and the supposed destruction of the neighborhoods it traversed in order to avoid what he believes to be the same mistake with the Connector. Problem is, he entirely misses the point about why the Evangeline Thruway was originally built, and how it has actually affected Lafayette.

Evangeline Thruway was originally designed to be an opening step towards an ultimate freeway facility going north-south (or, more accurately, north-southeast) through Lafayette. The wide median built at Willow Street was done explicitly to accommodate a future interchange; the 250 foot spacing between the one-way couplet (compromised only near Simcoe Street in order to avoid conflicts with the St. Genevieve Catholic Church facility) was designed to originally occupy an elevated freeway, and the accommodating roadways it connects (US 90 and US 167) were also created with full intent of ultimate upgrade to a limited access freeway. Temporary direct access was allowed in the initial stages of construction, but ROW acquisition for both the segments of US 90 south of Lafayette and US 167 north of Lafayette was designed for ultimate freeway upgradability. (US 167 was subsequently upgraded to a freeway to and beyond Opelousas as part of the original I-49 project to Alexandria and Shreveport.)

As for the apparent damage the Thruway has done to the “proud neighborhoods of the railroad’s Black middle class”? That’s a very interesting assertion; especially considering the explosive growth of Lafayette during the 60’s and 70’s due to the petrochemical boom and the development of the main university (first SLI, then USL, now UL(L). The oil glut of the 90’s did do some damage to Lafayette economically, but that was more an overall impact. Was the Thruway responsible for the rise and decline of Northgate Mall or the decision of Walmart to locate their Northside Supercenter there?

Currently, the Evangeline Thruway serves as the main source of access to both downtown (via mostly the Second Street/Third Street couplet, Jefferson Street, and Johnston Street), UL (via Johnston Street and University Avenue) and the Lafayette Regional Airport (via Surrey Street). It also serves as the main artery of access to the rapidly growing suburban enclaves further south, such as Youngsville and Broussard, and ultimately via US 90 south to New Iberia, Jeanerette, Baldwin, Franklin, and Morgan City. Is Mr. Sullivan saying here that things would be better if the Thruway wasn’t constructed to begin with?

In addition, you can make a serious case that the same railroad that apparently brought out the “great Black middle class” also caused the very division of the city of Lafayette as much as the Thruway, especially due to the centralized location of the former rail yard (before it was moved to the western fringes near Walker Road).

In any case, all this also ignores the basic fact that the proposed Connector freeway alignment simply uses most of the Thruway in order to be the least divisive and destructive. Other than a twelve block section of the median of the Evangeline Thruway from the Louisiana & Delta railroad spur crossing to around Simcoe Street, and a segment of the alignment straddling Chestnut Street, there are few if any residential displacements. And, the Elevated concepts under consideration allow for full and open access underneath the mainline structures for both people and vehicles to cross underneath, while deflecting the overwhelming majority of the heaviest traffic onto the mainline structures away from the surface streets. (The Depressed options bring forth their own benefits and risks; that is another story entirely.)

In any case, all this sounds like mere NIMBYism and fear of adjustment and a desire for restoring the mythology of isolated, close-fit neighborhoods where people merely walked 10 minutes to the local store or merely sat on their porches. In reality, Lafayette is not simply a patchwork of Port Barres and Abbevilles with a downtown hub; it’s a moderately-sized city which depends on transportation facilities that simply don’t meet their current demand, let alone the growth of the future.

3) The “Freeways to Boulevards” Fraud That Doesn’t Work

Here, Mr. Sullivan invokes a transportation concept that has become very popular of late for urban planners and car/freeway haters alike: the idea of pushing traffic away from currently elevated through freeway routes by converting them to surface at-grade boulevards for “economic development”. This “freeways to boulevards” concept took off with developers who wanted to tear down and tear up “ugly” elevated freeways that they claimed to obstruct the natural view and destroy inner city neighborhoods. The idea is that traffic wanting to merely pass through these cities are perfectly free to take long-way bypasses around them, but those wanting to go through them should be forced to slow down and traverse stoplights, bike lanes, and other obstructions so that they can stop and discover the beauty of those neighborhoods.

So far, there have been only a few communities that have attempted the “freeways to boulevards” concept, with mixed success. New York City had their Central Expressway downgraded to Central Avenue; and San Francisco after the devastating Loma Prieta earthquake of 1989 took out a double-deck section of Interstate 880 in Oakland, decided to simply rebuild it as a surface boulevard. That hasn’t stopped the New Urbanist faithful from gleefully pushing the concept on other cities. Freeway teardowns and boulevard conversions are currently being proposed in Kansas City (the southern Inner Loop section of I-70); Syracuse (I-81 through downtown), and New Orleans (the I-10 Claiborne Avenue viaduct).

Notice the disclaimer “proposed”, though. None of those proposals have been enacted, and alternatives that either preserve and improve the elevated segments or convert them into depressed/covered freeways with development allowed over them, are also under consideration. The main concern is that these new “boulevards” will not be able to handle the level of traffic that will remain on them, even with the diversion to bypass routes. Of course, that’s considered mostly a benefit for the New Urbanists; the better to force them to either stop in these neighborhoods or switch over to alternative means of transport (walking, bikes, buses, light rail).

It should also be noted that most of the freeway teardowns that are being implemented are isolated segments where alternative routes are being built or improved to meet the adjusted traffic need. In Houston, they are implementing the removal of the Allen Avenue Viaduct segment of Interstate 45 between I-10 and the US 59/Future I-69 stack interchange….but they are rebuilding and realigning I-45 along I-69 north to I-10 and then west on I-10 to maintain proper capacity. In most cases, the freeway segment is simply being dropped down (as in the Boston Central Artery/”Big Dig” project) or shifted along a close new alignment (as with the Dallas “Mixmaster” and “Horseshoe” projects along I-30 and I-45).

The relevance to the Lafayette Connector project, you ask? Well, opponents of this freeway have been pushing since the beginning for construction of an I-49 bypass along the eastern fringe of Lafayette, utilizing the Teche Ridge through St. Martin Parish. (Some have also been promoting a much longer bypass along the southern and western fringes of Lafayette Parish, called the Lafayette Regional Expressway, but the prohibitive costs and distance of that alternative deems it less attractive as a bypass alternative.) To them, Teche Ridge is a more “common sense” alternative that would avoid all the displacements and destruction of the Connector project, and allegedly at half the cost.

Most recently, Connector opponents have taken to proposing a combination proposal: build Teche Ridge as the I-49 South bypass, but also convert the Evangeline Thruway into a “high-speed” yet “neighborhood friendly” boulevard to handle the traffic that would use it. The claim is that Teche Ridge would remove enough traffic from the Thruway that the new “boulevard” would be able to both handle the remaining traffic and promote the appropriate development for the neighborhoods surrounding it.

One look at LADOTD’s current and projected traffic projections for the Evangeline Thruway puts that theory to bust. This is from the Lafayette Connector website, given as part of the third Open House Public Meeting last November.

The above graph shows the current traffic volume (based on 2015 values) on the Evangeline Thruway, listed as Average Daily Traffic (ADT). Notice that the Thruway couplet is listed as carrying 64,000 to 70,000 vehicles per day; which would be straining it for a four-lane freeway, let alone a six-lane arterial/2×3 one-way couplet.

Now we get to the projected ADT for 2040, provided that the Connector freeway is not built. Notice how the ADT values for the Thruway now jump to 86,000 VPD north of Johnston Street, and 95,000 VPD south of there heading towards Pinhook Road and the airport. Yeah…a boulevard will certainly handle that.

But, you say, won’t Teche Ridge divert enough traffic from the Thruway to make a boulevard possible? That’s what all the Connector critics say….but most credible studies show otherwise. In both 1993 with the North-South Corridor Study and in 2003 with the original Connector Final EIS/ROD documents, Lafayette Consolidated Government traffic engineers have done traffic studies on the Thruway to see what percentage of the Thruway traffic is truly bypassing the city rather than accessing places within the city. Their results consistently confirm that only 10 percent of the traffic on the Thruway is traffic bypassing the city; with the remaining 90 percent having orgins and/or destinations within Lafayette. Considering that the Thruway is the most direct and straightest connection between US 90 and both I-10 and I-49/US 167, that’s no surprise whatsoever.

There are other considerations why Teche Ridge is not the catchall solution some would argue, but that alone is a major justification for the Connector alignment.

For the record, shown above is the LCG’s predicted ADT for 2040 with the Connector built and running. Notice how the freeway not only attracts traffic from the surface Thruway, but also sucks up traffic from other major arterials….and, being six lanes, it can easily handle the work.

In fact, building the Connector freeway as proposed along with converting the existing Evangeline Thruway into an “urban boulevard” would be far more ideal for both balanced economic development for the abutting neighborhoods AND moving current traffic. Indeed, the proposals put out by the Evangeline Corridor Initiative integrate the idea of a boulevard into all of their Connector freeway proposals, with the idea of one enhancing the other.

4) The Second Big Lie Of “Build Around”: A Bypass Isn’t Inexpensive, But It’s Certainly Cheap

This is another assertion that opponents of the Connector freeway have blurted: that a bypass would be so much less expensive than the “Con” through Lafayette. Over at Michael Waldon’s Connector Comments website in opposition to the project, there are frequent references to the BILLION AND A HALF DOLLARS that would have to go through the alleged Connector rathole, only to have to tear it down 20 years later for a righteous boulevard and bypass. In comparison, they frequently quote the Teche Ridge Bypass as the “common sense” route, because it would cost “half as much” and be built “twice as quick” because it avoids tender and suggestive areas.

Reality, however, does not support that analysis.

The most recent cost estimates for the proposed Connector freeway concepts for the core downtown area were released to the public, and they are quite revealing. Again, these cover the costs for only the central core area between Pinhook Road and the L&D rail spur crossing.

What jumps out at you is the serious sticker shock of the cost for the Cut-and-Cover option, due to both the major need of ROW displacements, the construction of the tunnel, and the high maintenance and operational costs for the tunneled section. What also should jump at you is that the Elevated option (especially Concept 4-2 with the Evangeline Thruway boulevard sub-option) actually cost less than the originally approved 2003 EIS/ROD alternative. $426 million is a long way from $1 billion, I’d think.

Now, let’s do some addition: the segment south of Pinhook Road includes an improved crossing of the Vermilion River, the University/Surrey interchange (pending what happens with the proposed runway displacement at Lafayette Regional Airport), and the three-level interchange with Kaliste Saloom Road. Using current values, that would probably add around $125 to $150 million to the cost. Then, you have the section from the L&D RR spur to near I-10, that would include the elevated interchange with Willow Street and improvements to the frontage road system from Donlon Avenue/Walmart Drive to Chalmette Drive, and possibly even the proposed Willow Street Circle/Gateway Arch. That would be another, say, $50 million. CSS design modifications and improvements required for mitigation would add probably another $20 million; then maybe $3 million for cleaning up the old SP railyard facility. Add all that up, and it comes to around $650 million to $700 million total.

Now, that doesn’t include the local tax commitment to local neighborhood projects that would be proposed by the ETRT/ECI/TIGER team, but that would be a local issue. With the Feds pitching 90% of the funding since this is a federal highway project involving a High Priority Corridor, the state match required would come to about $70 million.

Compare that to what the bypass proposals would cost. The LRX certainly would be less expensive due to it going around the city, right? Ahh, WRONG. The LRX would be a 60 mile long bypass extending along the perimeter of western and southern Lafayette Parish, extending even into northern Vermilion and Iberia Parish. The most recent estimates of the most preferred alignment for the LRX placed the total costs at around $1.2 BILLION dollars for a full LRX semi-loop connection from US 90 to I-49. Last time I checked, $1.2 billion was greater than $700 million. By a lot. Plus, LRX is being proposed as a tollway, funded by bonds which would be paid back through implementation of tolls throughout the facility. The Connector would be built totally “free”, perhaps with “private-public partnership” (P3) funds to ease the tax hurt, along with the rest of the I-49 South upgrade to New Orleans. (There was some early talk about tolling the upgrade of US 90, but a study showed that tolls wouldn’t even pay half of the total costs of the upgrade.)

That would leave the Teche Ridge Bypass, which is the preferred choice of darn near every single one of the Connector opponents. That is far more reasonable…but still, the truth reveals some flaws.

Teche Ridge proponents have usually quoted a 1994 “feasibility study” that was undertaken by officials in St. Martin Parish (funded by profits from casinos operating in that parish) for their belief in that alignment as a suitable alternative to the Connector. That study placed the approximate costs of that alternative at roughly $400 million for a complete bypass connecting US 90 south to I-49 north. That figure was also quoted in the affadavit filed by the Concerned Citizens of Lafayette group’s lawsuit against the FHWA and LADOTD to block the original 2003 FEIS/ROD. That affadavit was also submitted to LADOTD as an official comment to the 2003 Final EIS.

LADOTD’s response to the portion promoting Teche Ridge’s apparent cost benefit is below:

That’s $601M, not including ROW and engineering, in 2002 US$. Extrapolate for inflation and add the necessary costs, and you’re probably closer now to $700-750 million….which is nearly the same cost as what the extended and extrapolated costs of the Elevated Option concepts for the Connector freeway would cost in full.

And that’s not all, either….because Teche Ridge is not considered to be a suitable alternative for I-49 South, as is every other bypass alternative, it would require an entirely new process for feasibility and environmental study from the beginning. That’s two years for feasibility, two years for environmental and engineering, then securing funding, then getting it into the transportation program. The currently approved transportation programs by LADOTD and the Acadiana Regional Planning Commision (the official Metropolitan Planning Organization for Lafayette and the parishes surrounding Lafayette) are keyed on I-49 South using the Connector freeway and an upgraded US 90; so is the enabling federal highway legislation. To upset that by shifting I-49 South to Teche Ridge or the LRX would be at best time and money consuming; and at worst threaten to kill the entire I-49 South upgrade.

And, to make things even more problematic, there are signs that Teche Ridge isn’t even ecologically and environmentally as safe a bet as its proponents would argue. That proposal would basically traverse the thin ridge of high land that separates the Cypress Swamp/Lake Martin lowland swamp wetlands from Bayou Teche. Most of that land is now converted to farmland or remain as support for the surrounding wetland. That would pose a significant risk to such fragile and sensitive land use in the form of drainage from the freeway invading the fragile wetlands or pouring into Bayou Teche, which is a designated Scenic Waterway. The increased noise level of Teche Ridge could also disturb the flight path of endangered birds that use Cypress Swamp as relief for their annual fall/spring migrations. This would certainly raise the ire of federal and state wildlife officials. Other than the probable encroachment of the Chicot Aquifer and the possible need for some wetland acquisition for the LFT runway displacement, the Connector has really no major environmental or ecological issues otherwise.

5) The Biggest Lie of All

The final riposte of Mr. Sullivan’s letter promotes a nice vivid fantasy that if Teche Ridge….ahhh, I mean, if a freeway loop is built and highway traffic is forced to abandon the Evangeline Thruway, the latter can be reworked into a beautiful Complete Streets boulevard that will support everyone from walkers to bicyclists, and revive Lafayette like nothing other.

Funny, but that’s exactly what the Evangeline Corridor Initiative is attempting to do with the Thruway right now….with the Connector freeway in place. That theory actually works because, unlike Teche Ridge, the Connector actually will take enough traffic off the Thruway that it can be reworked to be neighborhood friendly. And, surprise…it does it without even traversing Sterling Grove or McComb-Veazey or even Freetown-Port Rico, while allowing full access and connectivity underneath the freeway structure. By contrast, unless you are planning on downgrading the entirity of US 90 back down to 2×2 and dismantling the proposed interchanges now planned or under construction, you simply are not going to remove much traffic from the Thruway even with Teche Ridge built. If you think the Thruway is a disaster now with no sidewalks or consideration for the neighborhoods with 64K VDT, imagine it reduced to 4 lanes with 90K VDT. Even the best “boulevard” will fail that test.

As for hurricane evacuation effectiveness: only Connector opponents like Mr. Sullivan can explain how diverting hurricane evac traffic to the east through a 4-lane bypass and a reduced 4-lane boulevard would be better than a direct access 6-lane elevated freeway with full shoulders which would also allow for contraflow and also include the surface-level Thruway/boulevard as a backup. Not to mention that Teche Ridge would do absolutely nothing for an evacuation of Broussard or Youngsville, nor for evacuees escaping from Vermilion Parish using US 167 north through Lafayette.

Oh, and the example that Mr. Sullivan gives for his ideal Evangeline Thruway? That’s taken from a YouTube video dated January of 2016 that was linked in his letter showing a plan for removing a portion of the I-70 corridor in Denver. There’s one small problem: that’s not the finally approved plan for that corridor. The removal (and diverting I-70 to I-270 and I-76) was considered and then rejected as too expensive and disruptive; the ultimate final solution was to bury the existing I-70 corridor under a capped tunnel and build a boulevard section above it. You know…like the ECI’s Depressed/Capped Mainline and DOTD’s Cut-and-Cover Concept 6-2.

Finally, let me conclude with this: Yes, driving interstates and highways through local poor communities in the 60’s without any consideration for the neighborhoods affected was a huge, huge error in judgement, and in some cases, a deliberate crime. However, those crimes are history, and those highways are there, serving their stated purposes of moving people and goods to where they are wanted and needed. While it is fair and appropriate to question today whether those highways can be reformed or removed, those questions should be resolved on an individual case-by-case basis, with everyone’s input and feedback involved. And, whatever alternatives are proposed must meet the desires and needs of all who use the roads, not just some planner’s wet dreams for “redevelopment” or some people’s desire for bringing back “the past”. Whether we like them or not, however ugly they may be, freeways still move people who want their cars and trucks and vehicles; maybe instead of merely tearing them down or opposing them at all costs, we might attempt to build them with everyone’s needs balanced out.

The I-49 Lafayette Connector project is the most recent test as to balancing traffic need with the desire for abutting neighborhood improvement. The most recent plans offered meet those goals of balance. It would be a shame if NIMBYism and obstructionism for the mere sake of obstruction would kill the best chance for Lafayette to both relieve their most serious traffic issue AND lay the seeds for revival of its downtown and central core. A loop will be warranted down the line, even including Teche Ridge….but the Connector is needed TODAY. Let’s work together to build it to the best way possible, and save the bypass for later.

I-49 Connector Update: Documents From 11-30-2016 Open House Meeting, Plus Final ECI Charrette Report

This will be the placeholder for any documents of significance coming from the Conceptual Design/CSS/Supplemental EIS study processes, or any other relevant activity involved in the Connector freeway process. Unless otherwise noted, all documents are taken from the official Lafayette Connector Partners/LADOTD website. All documents were generated through Scribd.com.

1)  November 30, 2016 Open House Public Meeting — Display Boards for Presentation

 

2) November 30, 2016 Open House Public Meeting — Tier II Final Technical Memo Analysis 

 

3) November 30, 2016 Open House Public Meeting — Potential Design Modifications (PDM’s) Analysis Findings

 

4) Evangeline Corridor Initiative — Final Charrette Report (with markup of proposed Elevated and Cut-and-Cover options refined by ECI/ETRT and analyzed by LADOTD & LCP) (from the Evangeline Corridor website)

 

 

 

I-49 Lafayette Connector Update: Tier II Analysis Nearly Completed, ECI Surface Tunnel Gets Stoned, Elevated Option Most Likely Solution

[NOTE: All illustrations are from the Tier II Draft Technical Memo Findings Report that was introduced to the three I-49 Connector committees on November 4th and 5th; and were posted to the LADOTD Lafayette Connector website on November 5th. The report is downloadable from that website as part of a compressed folder in the “Project Library” section under any one of the relevant committee bar tags.]

—————————————————————————————————— 

This week was a long awaited week of movement in plans towards the Lafayette Connector freeway project. The Connector Design Team , under the leadership of the Louisiana Department of Transportation and Development (LADOTD) and the Federal Highway Administration (FHWA), unveiled yesterday the notes and results of their Tier II Analysis of the 2 remaining design concepts for the central core portion of the project; and the report opened and closed many options.

In case you may have missed it: LADOTD had decided after their initial Tier I Concept Analysis back in August to further study 2 conceptual designs for the central core: an elevated freeway mainline with cross streets passing underneath and the Evangeline Thruway used as dispersion between the freeway and downtown; and a partially depressed mainline (10 feet below ground level + 10′ above for 20′ of vertical clearance) with cross streets passing over the freeway. The latter option was itself divided into two sub-concepts: an open trench with cross-street bridging, and a “surface tunnel” or “cut and cover” option where the freeway would be capped and covered with embankment allowing the cross streets to pass over the tunnel. The “surface tunnel” variation was in direct response to feedback from the Evangeline Thruway Redevelopment Team’s Evangeline Corridor Initiative (the program to reconnect neighborhoods affected by the Connector that was partially funded by a federal TIGER grant) and some in the public who wanted what they thought would be a less visually impacting corridor.

The final draft of their Tier II analysis just came in….and it doesn’t look too good, unfortunately, for the “surface tunnel” option. Based on the initial scoring and the costs, it looks more and more like the Elevated option, probably with a conversion of the existing Evangeline Thruway core section to a “grand boulevard”, will become the chosen alternative for the Connector freeway.

Before we get to the meat of the analysis, a quick review of the background.

————————————————————————————

FEIS/ROD Selected Alternative/Concept 1A & ECI Alterations

The original Selected Alternative based on the 2003 Final Environmental Impact Statement/Record of Decision is illustrated below.

Original Refinement Concept 1A, consisting of the
Selected Alternative approved through the
2003 Final EIS/Record of Decision

That concept included standalone interchanges with Johnston Street and a consolidated couplet of Second and Third Streets, a mostly elevated mainline on structure (except for a section on fill between Jefferson and Johnston Streets, railroad grade separations with the above mentioned interchange locations (along with the current Jefferson Street underpass), and maintaining the existing Evangeline Thruway one-way couplet as part of the frontage road system.

Most local officials immediately panned this alternative because, according to them, the interchanges and underpasses took up too much space that could be more useful for economic development, the filled embankment section and interchange ramps were too divisive and didn’t allow enough connectivity, and the interchanges brought too much traffic into streets that they were trying to downgrade for “Complete Streets” multimodal use (bicycles and pedestrians).

The Connector Design Team responded by opening up the process to allow for “refinements” to the design for the core segment; this produced a total of 19 concept refinement proposals utilizing 6 concepts. It was here that the ETRT and ECI attempted to intervene with their ideas for better neighborhood connectivity and compatibility with “New Urbanism” techniques of broadening mixed use development. In early August, DOTD announced that they would reduce the level of alternative concepts for their Tier 2 series of detailed analysis down to two: the Elevated Mainline (Series 4) and the Semi-Depressed Mainline (Series 6). This was also in sync with the ECI pushing out their own proposed concepts based on those two alternatives. For posterity’s sake, here are the two ECI options for the downtown core of Lafayette. (From the ECI’s September 27th Charrette Report)

The hope for the ECI was that initial testing did show their Partially Depressed and Covered Mainline to be marginally feasible, and the possibility of huge economic development gains from exploiting the space over the freeway would justify the higher costs as compared to the Elevated Mainline option.

Unfortunately, it appears that those hopes have been dashed to pieces upon further analysis by DOTD engineers.

For the last 2 months, DOTD and the Connector Design Team basically reworked and tested the Elevated, Partially Depressed/Open Trench and Cut-and-Cover designs, eventually resulting in 4 final proposed design options that were presented this week. Let’s go through each one individually:

———————————————————————————–

1) Concept 4-1: Elevated Mainline with Evangeline Thruway Couplet

There are some aspects where the Design Team did incorporate some elements desired by the ECI “TIGER Team”; they “flattened” the mainline in the area between Second Street and Taft Street so that it paralleled Chestnut Street and the Burlington Northern Santa Fe Railway (BNSF RR) line; and they did do away with the original plan of a loop ramp at Taft Street for connecting the Thruway to the southbound Connector mainline in favor of a more traditional slip ramp pair to the Thruway at Eleventh Street. In addition, the Elevated Mainline would assume a taller structure for the viaduct; only thing left to be determined would be whether a 22′ or 30′ vertical clearance would be utilized.

In Concept 4-1, the Evangeline Thruway stays mostly in its existing one-way couplet up to just past Jefferson Boulevard, where it transitions into boulevard-like facility centered on the southbound Thruway roadway, to get away from the Sterling Grove Historical District and the St. Genivieve Catholic Church. It then gets incorporated into the freeway frontage road system, but with the northbound Thruway roadway rebuilt on new alignment parallel to the mainline; the former northbound roadway would be transformed into a local two-way street (Cigg Street before the Thruway was built, maybe??)

Cross section profile for Elevated Mainline

The existing profile for the Elevated concepts allows for a 22 foot vertical clearance under the structure in order to reduce the visual impact to surrounding areas; however, there is an option to even further increase the height to allow for a 30′ clearance, which could possibly raise the height of the freeway to as much as 45′ above ground level.

I-49 Connector Elevated Profile Heights above current
ground level, reflecting both 22 foot & 30 foot verticals
Another interesting adjustment is that Simcoe Street is essentially severed across the freeway mainline in order to free up more space for mitigating the visual impact on the St. Genevieve Church property. On the west side, Simcoe traffic would be diverted to Chestnut Street and then the Second/Third one-way couplet, which would then tie back into Simcoe on the east side. There would be also a new connection on the west side using the old Dudley Avenue right-of-way to connect with Greig Street. (Dudley Ave. was absorbed by the southbound Thruway when the latter was built.)
Section of I-49 Connector Elevated Option near Sterling Grove
Historical District (Concept 4-1, with One-Way Couplet)
Also noted is that Mudd Avenue, which traverses the Sterling Grove District, is severed between the former northbound roadway/future local street and the rebuilt northbound Thruway frontage road. This is apparently to remove direct heavy traffic access from Mudd eastbound, and to further provide a continuous buffer for homes in Sterling Grove and the St. Genevieve church/school property. Mudd would still have full access to the Thruway frontage system, though, because it would pass underneath the freeway mainline to connect with the northbound roadway. 
Treatment of Mudd Avenue intersecton with
realigned Evangeline Thruway frontage system
under both Elevated concepts (severage between
new northbound Thruway and former northbound
Thruway roadway converted to local street)
The proposals from the Evangeline Corridor Initiative studying means to retain connectivity throughout the Connector freeway corridor originally recommended Mudd Avenue be retained as a continuous arterial across the freeway/frontage system, but with the portion crossing the Sterling Grove Historical District converted into a “Complete Streets” multimodal facility more friendly to bicycle and pedestrian traffic. Both Concept 4 plans differ in that they would sever Mudd between the new northbound frontage road and the former northbound Thruway roadway, which would be converted back to a local two-way street. Negotiations with Sterling Grove residents and further feedback could get that connection restored during the latter stages of Tier III analysis.
Essentially, this is Concept 4A from the Tier 1 studies, with some minor tweaking. Other than the changes around Sterling Grove and St. Genevieve, and the addition of the elevated portion shadowing Chestnut Street, it’s pretty much status quo.

———————————————————————————-

2) Concept 4-2:  Elevated Mainline with Evangeline “Grand Boulevard”

This concept is basically the same as 4-1 but with one important exception: the Evangeline Thruway one-way couplet is replaced with a tighter “urban boulevard” taking up the southbound roadway’s ROW and just to its west. The northbound Thruway in its entirity is downgraded to a two-way local street. (Clay & Magnolia Streets used this ROW before they were taken by the Thruway.) The complimentary Tier 1 proposed refinement concept was Concept 4D.

Original Refinement Concept 4D, which served as the
genesis for Concept 4-2

The freeway would be pretty much offset by one block in the downtown core area from the Thruway frontage system (whether a couplet or a boulevard); and, as I said, Chestnut Street would remain open but would be shadowed by the open freeway structure. Full access underneath the freeway would be retained. The same option for higher vertical clearance (30′ instead of 22′) would exist for Concept 4-2 as it would for 4-1, as would the same revisions for access for Sterling Grove.

Section of I-49 Connector Elevated Option near Sterling Grove
Historical District (Concept 4-2, with Boulevard)

—————————————————————————–

3) Concept 6-1: Semi-Depressed Mainline with Open Trench

This proposal is an improvement on Concept 6A in the Tier 1 study, with refinements and adjustments developed through feedback with the Evangeline Corridor Initiative group. Its main feature consists of dropping the Connector freeway mainline 10 to 12 feet below ground level, while also allowing an additional 10-12′ of vertical clearance space above ground level. This would meet the DOTD standards for 20′ of vertical space for freeway vehicles. Important cross streets would be elevated over the freeway via bridge structures.

Original Refinement Concept 6A (Semi-Depressed with
Open Trench); the genesis for Tier 2 Option 6-1

One interesting variation that was added since Tier 1 was the realignment of the southbound Evangeline Thruway roadway south of Johnston Street to pass over the mainline before Taft Street in order to align itself correctly with the southbound frontage road near Pinhook Road. This realignment requires a similar realignment of Taft Street to pass over the freeway, shifting its connection with the northbound Thruway roadway from Fourteenth Street to Thirteenth Street. Also, Fifteenth and Sixteenth Street would be severed at the Thruway to allow for the south connection ramps to slope properly.

Profile of Semi-Depressed Open Trench structure

The same evolution of the Thruway into a semi-boulevard from Jefferson to Simcoe, then to a parallel frontage road system north of there, would exist as with the Elevated option. However, the access for the Sterling Grove and Ballard Addition neighborhoods would be radically different with the Partially Depressed option due to the needed transition of the mainline from depressed to elevated to cross the Louisiana & Delta Railroad (L&D RR) spur line. Mudd Avenue would have to be completely severed across the freeway, and would be connected only with the frontage roads with no access between them. Chestnut Street would be totally wiped out, of course; so access for Simcoe would have to be switched to North Grant Street to access Second Street to cross the freeway and get to the east side. (Second and Third Streets would become autonomous two-way streets rather than a one-way couplet in this option.) Simcoe on its eastern flank would be diverted into the Dudley Avenue ROW and then turned back onto Greig Street with no connection at all to the southbound frontage road. Bellot and Tissington Streets would be the only means of cross-street access north of Second Street for Sterling Grove and Ballard Addition up to the L&D RR crossing.

Closeup view of cross-street access changes near
Sterling Grove Historic District from
Concept 6-1 (Semi-Depressed Open Trench)

But the rubber starts to really hit the road with the Semi-Depressed option (and Cut-and-Cover option as well….more on that later) with the downtown major cross street crossings and how they cross the BNSF railroad. The original Concept 6A proposal had Jefferson, Sixth, and Johnston Streets all grade separated over both the freeway and the rail line. That created some issues with the cross street railroad bridges extending past Cypress Street on the west side and disabling it as an access street; as well as issues with Johnston Street’s intersection with Cypress Street and Garfield Street, which sets the boundary for the Freetown-Port Rico neighborhood. That’s a major issue, considering that F-PR was recently made an Historical District with all the protections included.

Original concept for Tier I Enhancement Option 6A
(Semi-Depressed Mainline) showing grade-separated
overpasses of BNSF RR at Jefferson, Third, &
Johnston streets

The original 6A, as seen in the above graphic, used the original curvature of the 2003 ROD Selected Alternative, bringing the freeway close to the BNSF rail line near Johnston Street. The ECI folks, in their Charrette presentations, proposed the idea that if the curvature of the freeway mainline was “flattened” to push the apex of freeway curvature 150 feet eastbound away from the railroad, there would be enough space that the cross streets would return to ground level to cross the rail line at grade. The general idea for the ECI proposal was to have 50-100 feet of slope on either side of a 150′ mainline ROW, raised 18′ above ground level, and returning to existing level before the rail line to the west and the existing southbound Evangeline Thruway to the east. (More on why that idea fell apart for the Surface Tunnel option later on.) The original ECI Covered Mainline proposal for the downtown segment is illustrated below:

Evangeline Corridor Initiative’s original concept
for Semi-Depressed/Cut-and-Cover “Surface Tunnel”;
including “flattening the curve” of mainline
& shifting Evangeline Thruway frontage roads
to directly above/flanking covered freeway (from 10-27-16
Charrette Report)

DOTD and the Design Team, upon further study, found and reported that the concept of returning the cross streets to existing grade at the BNSF RR crossings would marginally work with the crossings at Second, Third, Jefferson, and Sixth streets. While those roadways could be returned to ground level in time to cross the BNSF/UP railroad at grade, there would be some issues with the slope of grade (nearly 7%) approaching the railroad crossings, especially for high profile vehicles. It was, though, technically feasible. Note that this option replaces the existing Jefferson Street underpass of the BNSF rail line with an at-grade crossing….for obvious reasons.

Overview of proposed Semi-Depressed overpasses of
Second, Third, Jefferson, and Sixth streets; with return
to level-grade BNSF RR crossings
Profile of Semi-Depressed option overpass of Third Street
(would also apply to Second, Jefferson, and Sixth)
Semi-Depressed (Open Trench)
cross street gradient profiles for
Downtown section
Such was not the case, unfortunately, for the Johnston Street crossing. The studies found that there simply wasn’t enough space between the depressed freeway ROW and the railroad to allow for a safe return to grade to provide a grade level crossing. 
Original profile of Johnston Street overpass of Semi-Depressed
option returning to level grade to cross BNSF RR (rejected
due to insufficient space)

Thusly, the only alternative for Johnston Street was to elevate it in order to cross over the railroad. And that’s where everything starts to fall apart. For starters, the required 23.5′ clearance over the BNSF rail line would be much higher than the clearance needed over the Semi-Depressed freeway ROW. Most important, though, is that the overpass would require an excessively steep gradient to the west of the railroad if the idea was to return Johnston to grade near the Cypress Street/Garfield Street intersection. That was important because Johnston runs right through the Freetown-Port Rico neighborhood, which was recently endowed with Historical District status, giving it special protection against any intrusion upon it. Johnston Street is also the main arterial to the campus of University of Louisiana at Lafayette, and ultimately serves as the hurricane evacuation route for Vermilion Parish. You really don’t want hurricane evacuation traffic having to traverse a 9% grade.

Original Johnston St. BNSF RR overpass profile with Semi-
Depressed option to avoid penetrating Freetown-Port Rico
Historic District

An alternative that was proposed to mitigate that situation was to raise Johnston Street and extend the structure to meet level grade at Vermilion Street to produce an acceptable gradient of 4%. That would not only require elevating the Garfield Street intersection nearly 12′ above ground and severing Cypress Street; but also elevating Lincoln Street’s intersection as well. The resulting penetration using Johnston Street would be a serious encroachment of the Freetown-Port Rico Historical District, bringing the full wrath of Section 4(f) and Section 106 violations. Nevertheless, the proposal here does include the elevated and separated Johnston Street overpass with the extended gradient.

Johnston St. profile for Semi-Depressed option
revised for sufficient gradient profile; note serious penetration
of FTPRHD due to need to elevate Garfield & Lincoln
streets.

Vertical view of intrusion of revised Johnston
St./BNSF RR overpass for Semi-Depressed
Open Trench option into Freetown-Port Rico
Historic District

You can notice also how the intersection of Johnston Street and the southbound Evangeline Thruway/frontage road has to be elevated on fill to meet the profile of the railroad overpass.

The Semi-Depressed alternative would also have some very severe ramifications for the neighborhoods surrounding the Sterling Grove Historical District as well. While the SGHD would not be impacted directly with any ROW takings with this or any other of the proposed concepts (same with the original 2003 ROD Selected Alternative), there would be some very nasty indirect impacts.

For starters, the Evangeline Thruway between the L&D RR rail spur crossing and Jefferson Street would have to be totally rebuilt and raised on either fill or structure to adapt to the standard vertical clearances required for the 10′ depressed mainline. This would mean the Thruway and cross streets would have to be raised as much as 8 to 10 feet, and the actual crossing of the mainline would require as much as a 19 foot vertical clearance. While the northbound Thruway roadway would be shifted westward further away from the SGHD (and especially Saint Genevieve Catholic Church and School, which directly fronts the original northbound Thruway roadway), the raised height would still introduce at least a strong visual impact.

Semi-Depressed Open Trench cross street
access changes for Sterling Grove/Simcoe/
Second/Third/Jefferson area
Roadway vertical profile heights for Semi-Depressed
Open Trench option (values are above ground level)
Profile gradients of cross streets & frontage system for
Semi-Depressed Open Trench option
Then, there is the severing of Mudd Avenue at its intersection with the Thruway frontage roads. Due to the need to elevate the southbound roadway to cross over the mainline, Mudd on the west side is “teed” (terminated at a T intersection) at the southbound Thruway, while its east side going through the SGHD is similarly “teed” with the realigned northbound Thruway frontage road. No access across the freeway is possible there due to the vertical clearance requirements for the mainline. Considering that Mudd Avenue is an important arterial that also carries US 90 off of the Thruway, that’s an important issue. 

Severage of Mudd Avenue due to Semi-Depressed Open Trench
option

The local cross streets from Goldman to Tissington up to the rail spur are kept open underneath the mainline (where it transitions to an elevated facility to cross the rail spur) to allow for cross access. The elevation of so many cross streets would require far more displacements and loss of access for residents, causing much more disruption for those neighborhoods.

The same would also go for the segment near Taft/Fourteenth streets, because of the realignment of Taft Street to connect with Thirteenth rather than Fourteenth, and the subsequent severing of Fourteenth, Fifteenth, and Sixteenth streets to accomodate the south connection ramps and the raised grades for the southbound roadway to pass over the mainline and connect with Taft.

Treatment of cross street access with
Semi-Depressed Open Trench option
near Taft St./Pinhook Rd. area

——————————————————————————–

4) Concept 6-2: Semi-Depressed “Cut-and-Cover” Mainline

This concept originally evolved out of Concept 6E of the earlier Design Team Concept Refinements. The original thought was that perhaps if both the railroad and the freeway mainline were shifted east a bit, the overpasses would remove the impact of at-grade rail crossings. One look at the implications of derailments of the railroad within the tunnel, as well as the impacts to access downtown, was enough to render that concept as impractical.

Original Refinement Concept 6E, which served as the foundation
for both the ECI Semi-Depressed Covered Mainline proposal
and the ultimate Tier II Concept 6-2 “Cut-and-Cover” option

However…..the Evangeline Corridor Initiative group (aka the “TIGER Team” due to the Department of Transportation grant it was bestowed upon to study integrating the Connector freeway into the community better) seized upon the burnt ashes of Concept 6E to develop their own alternative which they though could serve the same goals better. The resulting “Surface Tunnel” proposal eliminated the overpasses altogether and pushed the railroad centerline back to its existing ROW, creating enough space between the freeway ROW and the railroad to allow all the cross streets to return to grade.

Evangeline Corridor Initiative’s “Partially Depressed
and Covered Mainline” proposal

It certainly looked more than good on graphics, and it was enough for LADOTD to allow that concept to get more detailed vetting in the Tier II process. Unfortunately, the same problems and issues that affect the Semi-Depressed open trench also dissuade the Cut-and-Cover option as well…and then some.

It should be noted that the ECI propsal extended the capped/tunneled section north to include a total reconnection of Mudd Avenue, and allowed for the extension of some more local streets between Johnston and Taft streets for better connectivity. Apparently, DOTD found those to be impractical, because they don’t make their final Cut-and-Cover proposal. The cap remains set between Second Street and Taft Street, with the remainder of the mainline open-trenched.

Profile of Cut-and-Cover Tunnel structure

The same issues involving the downtown cross-street crossings with the Semi-Depressed open trench also exist with the Cut-and-Cover tunnel…but with the additional need of even higher vertical clearances to accommodate the cap. The result for the minor cross streets (Second, Third, Jefferson, Sixth, and Taft) is an even steeper gradient required to return the streets to grade to cross the BNSF/UP line. Even with that, the gradients are still marginally feasible (although, according to LADOTD, “not desirable”). Note also that, as with the Semi-Depressed open trench, the existing Jefferson Street underpass of the BNSF RR is removed and replaced with an at-grade crossing.

Downtown cross street gradients for
Cut-and-Cover option

Vertical profile for Cut-and-Cover Third St. Overpass
(applicable to Second, Jefferson, and Sixth streets as well)

Notice also that unlike the ECI Covered Mainline option where the cap returned to existing grade before the existing southbound Evangeline Thruway, this Cut-and-Cover option massively expands the embankment eastward to the point that the Thruway frontage roads have to be raised nearly 16 feet and straddled to meet the desired sloping profile. The ECI’s proposal for their Semi-Depressed Covered Mainline was to reduce the embankment on the east side that it would return to existing level grade before the southbound Evangeline Thruway, similar to the sloping on the westbound side. Apparently, that was rejected by the LADOTD engineers as too excessive a slope; instead, the embankment extends all the way to the existing northbound Thruway roadway ROW, and even takes on area east of the Thruway between Third and Simcoe streets.

Profile of proposed Cut-and-Cover Johnston St. overpass
(showing insufficient space for return to existing grade level
for at-grade BNSF RR crossing)

The same issues that befell the Semi-Depressed Open Trench option also exist here with the Johnston Street crossing; to which the same solution of an expanded railroad overpass penetrating the Freetown-Port Rico Historic District is offered.

Proposed Cut-and-Cover Johnston St./BNSF RR overpass
based on avoiding FTPRHD penetration
(rejected due to excessively steep gradient)
Revised Cut-and-Cover Johnston St./BNSF RR overpass
adjusted for sufficient gradient
(with penetration of FTPRHD)
Overview of proposed Cut-and-Cover Johnston St./BNSF RR
overpass showing penetration of FTPRHD
The resulting gradients and roadway heights:

Summary of the cross street/frontage system gradient profile
for the Cut-and-Cover concept
Summary of profile heights of roadways/embankment above
ground level for Cut-and-Cover option

And also….the same issues with cross access for Sterling Grove exist as with the Semi-Depressed option, with the same resolutions therein.

Treatment of cross street access for Cut-and-Cover option
near Mudd Avenue/Sterling Grove/Second/Third/Jefferson
(virtually same as Semi-Depressed Open Trench)

Those issues alone would be enough to dissuade the Cut-and-Cover option….but apparently that wasn’t enough for LADOTD. The Tier II Technical Memo report also gives some clear and concise detail of the potential downsides of constructing and operating the surface tunnel, as well as the high costs of maintenance and operation. There would have to be additional considerations for ventilation and egress of trapped vehicles in the event of an incident inside the tunnel. Fire suppression, lighting, and drainage would also have to be dealt with, especially in the event of a major hurricane evacuation through Lafayette. Also, due to Louisiana state law, handlers of hazardous materials would not be allowed to use the tunnel; they would be rerouted through the surface frontage road system.

———————————————————————————-

Conclusion: Comparing The Tier II Alternatives

All of this leads to the ultimate comparison: How do they stack up? The following two tables tells the tale.

First, the displacements and ROW that would be needed:

Displacement and ROW acquisition matrix for all Tier II concepts

As plainly seen, the two Concept 4 options would require less ROW than even Concept 1A (the original 2003 ROD Selected Alternative) due to the elimination of the two direct interchanges, and would have fewer displacements as well. 4-2 (with the boulevard) would use up slightly more takings than 4-1 (the couplet). The Semi-Depressed option (Concept 6-1) would be slightly worse than Concept 1A overall. The Cut-and-Cover option (Concept 6-2), though? Off the charts, with nearly three times the displacements and ROW needed due to the expanse of the embankment needed to cap the tunnel.

Even worse for the Cut-and-Cover option is that LADOTD could only acquire and pay for ROW for those areas used for “transportation purposes”, meaning that other funding sources would have to be located for any property takings outside of the immediate ROW. That would add an additional expense for LCG outside of its otherwise full commitments.

Matrix of 4(f) and Section 106 impact
to Freetown-Port Rico and Sterling Grove Historical Districts
for all Tier II Concept proposals

This is the preliminary impact matrix to the two Historical Districts that the Connector passes near. An Memorandum of Agreement (MOA) is already binding on all parties regarding mitigation for the visual impacts of Sterling Grove Historic District of the originally approved Concept 1A/2003 ROD alternative. More than likely, that MOA will be extended and modified to fit the needs for the new alternative concepts.

It’s likely that the impact will remain the same or even be sightly reduced with the two Concept 4 options, since the shift of the northbound roadway and the adjustments to the northbound connection ramps, combined with the removal of Simcoe Street, do lessen the impact to Sterling Grove greatly. Freetown-Port Rico would not be significantly affected either by the Elevated Option, save for a possible visual impact due to the height of the viaduct, especially if the higher 30′ vertical clearance is chosen.

By contrast, Concepts 6-1 and 6-2 would both require the penetration of the Johnston Street overpass over the freeway and BNSF railroad — a major penetration into the FTPRHD which would probably trigger Section 4(f) protocols for avoidance of impacts to historic properties.

Now, we get to the most important consideration: the cost.

Matrix for comparison of planning level costs for all Tier II Concept alternatives

Keep in mind that these cost estimates are only for the core section between the L&D rail spur and Pinhook Road, not for the entirity of the Connector freeway.

Finally, LADOTD made a comparison matrix rating all the Concepts they studied based on specified criteria. The results are shown below:

LADOTD Comparison Matrix for all Tier II Conceptual Alternatives

As plainly seen, the Concept 4 alternatives, due to their elevated nature, scored higher on the favorability index than the original Concept 1A/2003 ROD Selected Alternative; and both were far higher ranked than the Concept 6 alternatives. Concept 6-2 (the Cut-and-Cover concept) was universally panned for its excessive up-front costs, its high maintenance, its incompatibility with the goals of hurricane evacuation and Haz-Mat material transport, and its excessive taking of ROW and displacements as compared to the Concept 4 (Elevated) concept alternatives. Concept 6-1 (the Semi-Depressed Open Trench option) scored only less slightly worse than the Cut-and-Cover, but still got plenty of red and yellow marks.

Some advocates for the Cut-and-Cover point to the fact that while the front end costs for that option seem prohibitively expensive, the induced rewards for redeveloping the property taken near the ROW would ultimately make for a better economic return down the line. The ECI did do a study on that, claiming that there would be a $6 million a year local tax base return on overall economic development from the Semi-Depressed Covered Mainline option as opposed to the Elevated Mainline option.

Problem is, though, most people don’t think so long-term, and the sticker shock of $818 million for a 1-1/2 mile tunnel will probably be more than enough for most officials to declare the Cut-and-Cover option to be a good idea that just wasn’t good enough. The Semi-Depressed open trench option might be a bit cheaper, but the image of it becoming a flowing tributary of the Vermilion River after a heavy rainfall event may become etched enough in people’s minds to reject that, too.

Which means that it’s becoming more apparent that we are back where we were at the beginning, with an elevated I-49 Connector freeway going through the heart of Lafayette.

Unless some unforseen new environmental impact (such as the possible contamination of the former Southern Pacific Railroad rail yard, or the resolution of the Connector messing with the flight path of Runway 11-29 at Lafayette Regional Airport) was to emerge, the only remaining obstacle to the Connector’s implementation will be the legal firestorm from those opponents who want to kick this project completely out of Lafayette in favor of their Teche Ridge Bypass through St. Martin Parish. I’m sure that the Concerned Citizens for Good Government and the Greater Acadiana Sierra Club are already calling their lawyers for the inevitable second lawsuit that will be filed the day after the Supplemental ROD is delivered for this current study. We’ll just have to watch this unfold.

Building The Better Mousetrap: ECI, Signature Bridges, And The Surface Cover That Could Change The Game

The most fundamental question involving construction of the I-49 Lafayette Connector from the beginning has been this: Can a major six-lane freeway be built through the heart of Lafayette that can be integrated with the historic neighborhoods and downtown without wiping them off the map?

Many living in those neighborhoods, along with many advocates for New Urbanism, have said, “Oh HELL TO THE NO!!”, citing the history of badly planned and executed freeways being driven through inner cities without any due planning or respect for those being razed. They have been and still are the biggest advocates for swinging I-49 around the city via a bypass, while protecting the inner neighborhoods through “road diets” and reemphasis on non-auto based transportation options.

Thankfully, that attitude is being seriously challenged by a new breed of urban planning that could change the way that urban freeways are built in these areas. And, they just might have more than a snowball’s chance in Hell of executing their designs here in Lafayette.

The Evangeline Corridor Initiative (ECI) is an outgrowth of the Evangeline Thruway Redevelopment Team (ETRT), an organization founded by the Lafayette City/Parish Consolidated Government (LCG) as a go-between for redevelopment of the neighborhoods affected by the Connector freeway. The ETRT was formed under the guise of a joint agreement between LCG and the Louisiana Department of Transportation and Development (LADOTD or DOTD) to enact preliminary corridor preservation and property acquisition for the Connector project. It’s main focus, however, is to attempt to successfully integrate the Connector project with the surrounding neighborhoods and downtown in a seamless and constructive fashion that promotes both Smart Growth principles and appropriate development.

In 2014, the ETRT applied for and was awarded a $500,000 grant from the US Department of Transportation through its Transportation Investment Generating Economic Recovery (TIGER) Grant program for implementing and integrating the Connector freeway project with the community of Lafayette that would be most impacted by its construction. Their now ongoing study has the goal of not only meshing the freeway with its surroundings, but also provide more direct connectivity between the neighborhoods affected through more diverse options for transport (such as bicycles and walking); as well as improve opportunities for more suitable and better scaled economic development.

To facilitate the implementation of the project, three Areas of Influence were established for the Connector freeway:

— Area  Level I consisted of the actual right-of-way taken for the freeway facility;

— Area Level II consisted of a 500 foot buffer zone on either side of the ROW, which would serve as a transition zone between the freeway and its surrounding neighborhoods; and

— Area Level III consisted of the boundaries of the neighborhoods immediately impacted by the project.

ETRT’s and ECI’s main purpose would be to develop Area Levels II and III, and interact with DOTD and FHWA on refining Area Level I to meet their goals.

When the ECI originally announced its initial study, the assumption was that the design for the Connector would strictly follow the Selected Alternative that was approved in the 2003 Record of Decision. That alternative consisted of a mostly elevated freeway utilizing most of the Evangeline Thruway corridor, save for a segment near downtown where it would follow a gradual curve just east of the Burlington Northern Santa Fe/Union Pacific (BNSF/UP) main railroad line. Two standalone interchanges along that section with a realigned Second Street/Third Street couplet and Johnston Street would provide direct access to downtown and the neighborhoods surrounding that area; grade separated underpasses of the railroad line would prevent conflicts. Other than a brief section between Jefferson Street and Johnston Street where the mainline freeway would be elevated on embankment to account for the ramps to the two close interchanges, the mainline would be elevated for most of its entirity. Higher than usual vertical clearances (22 feet rather than the typical 16.5 feet) would be used in the segment between the Louisiana and Delta Railroad (L&DRR) spur line and Simcoe Street as part of mitigation for the visual impact to the Sterling Grove Historic District neighborhood. Also, the existing Evangeline Thruway couplet would be retained as part of a frontage road system feeding the Connector freeway and providing secondary access along with the interchanges.

Aerial profile of I-49 Lafayette Connector Selected Alternative, based on
2003 Record of Decision and 2007 Conceptual Study

However, when the Conceptual Study was revived in October of 2015, those assumptions quickly were rendered useless. There was the historical strong opposition from those who opposed building the freeway through Lafayette from the very beginning, preferring a bypass alignment to the east such as the Teche Ridge Bypass or the Lafayette Regional eXpressway (LRX) alternative to the west.

However, a different form of opposition soon emerged from downtown interests who did favor the central alignment, but begged to seriously differ on some of its details. The Lafayette Downtown Development Authority (LDDA) was particularly not so keen to some elements of the Selected Alternative; and their objections were reinforced through both the public involvement process of the main Conceptual Design Study and the initial meetings of the Evangeline Corridor Initiative through their innovative “charrette” meetings. The main objections were:

1) The two standalone interchanges with the Connector at Johnston Street and Second/Third Streets took way too much right-of-way that could be used for development, and were unnecessarily divisive for connectivity.

2) The embanked segment of the mainline between Johnston Street and the Jefferson Street underpass was too divisive, and severed an important collector (Sixth Street/Lee Avenue).

3) The Second/Third Street couplet interchange/railroad underpass potentially forced too much traffic onto Congress Street (which the couplet directly fed into), which contradicted plans for remodeling the latter as a “Complete Streets” prototype for pedestrian/bicycle access and slowing vehicle speeds. It also potentially impacted the Coburn Building, an old retail shop that had recently been approved into the National Register of Historic Buildings.

In reaction to those objections, LADOTD was induced to add a six-month period where modifications to the Selected Alternative could be proposed to address these needs. While the alignment remained the same as to not disturb the concept approved by the 2003 ROD, tweaks to the system of access were proposed, ultimately resulting in 19 design “refinement” modifications by May of 2016.

The ECI study was conceived to run parallel with and advise the DOTD study, and to provide some form of feedback for addressing the Joint Use and greenspace requirements for the freeway. Originally, the idea was that ECI would serve only to perform the development of design for Levels II and III…but as the ideas kept rolling in, it was becoming apparent that they should intervene with DOTD to offer up their own alternative designs more suitable to their goals. In the end they settled on two main concepts, both based on concepts developed by DOTD, but with their own alterations.

Elevated Mainline with Signature Bridge

Overview of Elevated Mainline with Signature Bridge
concept from Evangeline Corridor Initiative
(from ECI Draft Charette Report)
DOTD Concept 4D (Evangeline Parkway), the genesis of ECI’s
Elevated Mainline with Signature Bridge design




Generally based on the Series 4 concept from DOTD, this alternative design entailed a continuous elevated structure along the length of I-49 from the Chalmette Drive crossover all the way to the Vermilion River crossing (or even the University Avenue/Surrey Street crossing). The effect would be more of a large scale land bridge crossing Lafayette, with the peak of the crossing designed as a “signature bridge” landmark that would define downtown Lafayette. Instead of direct interchanges downtown, access would be provided through direct connection “slip ramps” to a redefined Evangeline Thruway frontage system, with the slip ramps placed between the L&DRR and Mudd Avenue for north access, and between Pinhook Road and the Vermilion River crossing for south access. The Evangeline Thruway southbound roadway would be reformed as a six-lane urban boulevard for local business development; the northbound Thruway roadway would be downgraded to a two-way local street and returned to the local grid for the McComb-Veazey neighborhood. Accessibility and connectivity would be improved and restored underneath the “signature bridge” by adding additional cross streets over the BNSF/UP railroad, and restoring some one-way streets to two-way for refining the downtown grid. The space immediately under the bridge structure would be developed for public parking and green park space.


Semi-Depressed Mainline with Cover (Surface Tunnel)



This concept was actually not included in the 19 design modifications put out by DOTD, but is a modification by ECI of one that was included. Part of the Series 6 concepts, this was originally developed thanks to input from an unnamed constituent who noted that an original concept of a depressed Connector freeway was vetted and rejected in the early studies. That concept would have depressed the mainline freeway 20 feet below ground level within the median of the the entirity of the Evangeline Thruway. While it was ruled to be marginally feasible, it was rejected out of practicality and the need for I-49 as a hurricane evacuation route. The constituent suggested that maybe a partially depressed freeway would work better; and studies did confirm initially that a 10 foot drop would better allow for gravity drainage.

The Series 6 concept designs are based on dropping the elevated segments from just south of the L&DRR spur overpass to Pinhook Road down 10 feet below ground level, and adding 10 feet of vertical clearance, for a total of 20 feet. Crossing streets would then be allowed to pass over the freeway for connectivity. The first concept (6A) called for an open trench; subsequent concepts added the cover for a partially submerged tunnel effect.

The ECI Covered Semi-Depressed Mainline alternative is an adjustment to LADOTD’s Concept 6E, which originally called for flattening the curve of the mainline freeway and also shifting the alignment of the BNSF/UP rail line 150 feet east of its current ROW and dropping it to the same level as the freeway. All ECI did was to return the rail line back to its current trajectory, but keep the shift of the freeway centerline so that the resulting berming over the freeway tunnel could return to existing grade prior to the rail line. This allowed all the crossing streets to retain at-grade crossings of the railroad, removing the need for overpasses.

The other striking feature of the Semi-Depressed/Covered Mainline alternative is that the Evangeline Thruway is essentially replaced altogether with an avenue/boulevard hybrid built directly on top of the tunneled mainline segment, and accessible through the same “slip ramp” connection system as the Elevated Mainline uses. The original Thruway roadways would be downgraded to local streets within the neighborhood grid. (There is an option that utilizes both the avenue on top and the boulevard on the side.)

Initially, DOTD balked at including ECI’s alterations to their Series 6 options in their initial analysis, citing both the protocol of DOTD handling Area Level I and that the time for entering concept modifications had passed. Under strong pressure from LCG officials insisting that the alterations be added (as a new concept “6F”), DOTD partially relented and allowed for consideration of the ECI alterations to 6E, provided that that series passed the initial Tier I analysis…which it did by August 2016. All of the modifications under Series 4 and 6 are now currently under a more involved Tier II analysis by DOTD, which will result in the culling down to three finalist alternatives by the end of October, and a final selected and approved alternative by the end of December.

Reinventing Lafayette Gateway North…The Arc d’Willow???

Another goal of the ECI study was to find new ways of exploiting the Connector freeway to redevelop neighborhoods that had been struggling to rise economically. The Lafayette North Gateway District is one distinct example. Once a center of activity through Northgate Mall, Albertsons’, and Walmart, North Lafayette along the Evangeline Thruway has suffered greatly economically, and it is accelerated by the lack of through access due to the nature of the at-grade Thruway.

The original concept for the Selected Alternative in this area was to integrate the Evangeline Thruway into the frontage road system as traditional one-way frontage roads, with a slip-ramp diamond interchange at Willow Street and underpass connections at Martin Luther King Drive/Castille Avenue and at Donlon Avenue/Walmart Drive. The Gateway Visitors Center within the median of the Thruway would be removed and relocated to make room for the Willow Street overpass/interchange.

Needless to say, the ECI folks took one look at those plans and announced: “Ummmm…nope. We can do much better than this.” And this was the result:

The second most distinct feature of this refinement is the radical transformation of the Willow Street interchange. No more slip ramp diamond; now it’s a huge circle interchange with the ramps from I-49 connecting directly to the circle rather than the frontage roads. The MLK/Castille and Donlon/Walmart intersections are now smaller circle/roundabouts, too, and all connected with two-way local streets fronting houses and mixed-used development. Both the Northgate Mall and Walmart properties are also transformed into mixed-use/smaller business development as well.

I did say second most distinct, right? For #1, you got to look what’s inside the Willow Street Circle. Behold, behold…the Arc d’ Lafayette!!

Yes, that would be a 60 foot imitation of Paris’ Arc d’Triomphe straddling the Connector overpass of Willow Circle, complete with a new home for the Visitors’ Center and an observation deck on top. This is what you call “thinking outside the box”.

All of this may seem quite expensive and beyond the reach of funding for the Connector freeway, but considering the alternative of not completing I-49 South or having it diverted around Cypress Swamp and St. Martinville and Breaux Bridge for no benefit, I’d say that this deserves more than just a look.

The I-49 Lafayette Connector and Lafayette Regional Airport: Myths And Reality

One of the many impacts that the I-49 Lafayette Connector freeway project would impose on the city of Lafayette would be a displacement of Runway 11-29 at Lafayette Regional Airport (LFT). This is due to the proximity of converting the existing intersection between the current Evangeline Thruway and East University Avenue/Surrey Street into a grade separated overpass/interchange. The resulting overpass crossing University/Surrey would penetrate into the direct flight path of aircraft entering and departing Runway 11, violating slightly the Runway Protection Zone glide path. The overpass would add about 15 feet of additional height that would need to be cleared along the glide path of Runway 11-29.

In order to raise the glide path to safely avoid the overpass, the proposal is to extend Runway 11-29 by 350 feet at its eastern end, shifting the western end of its approach by that length. This would conceivably provide enough of a graduated slope to clear the overpass and the required 17 foot safe zone above the highest height of clearance. The existing eastern end would not be removed, just remain as sort of a dead zone.

The runway extension would require the acquisition of some wetlands at the eastern end in order to raise the grade level, but the amount of wetland acquisition would be less than 5 acres, and would be within the existing property controlled by the airport.

Aerial view of Lafayette Regional Airport with
proposed displacement of Runway 11-29 to conform with
proposed I-49 Lafayette Connector freeway
(via Lafayette Connector website)

The Louisiana Department of Transportation and Development (LADOTD) and the Federal Highway Administration (FHWA), who are the lead agencies for the Connector freeway project, have had constant and consistent discussion and interaction with the Federal Aviation Administration (FAA) concerning the potential impacts of the runway extension. FAA gave their initial approval to the current alignment and LFT adjustments as stated in the FHWA Record of Decision (ROD) in 2003 (downloadable here), and then authorized and approved their own standalone ROD for the airport modifications in 2008. (The full FAA ROD is downloadable here (pdf document).)

Due to recent changes in FAA regulations for wetland mitigation and construction standards, the current I-49 Lafayette Connector Conceptual Design Study and Supplemental Environmental Impact Statement (SEIS) process does include a reconsideration of modifications to the University/Surrey interchange to mitigate or avoid the need for the runway displacement. It is more than likely, however, that the displacement will be retained due to conditions that restrict modifications to the University/Surrey overpass.

Nevertheless, such developments haven’t stopped opponents of the Connector freeway, who would much rather it be diverted to a bypass around the city, from decrying the possible impacts of the displacement.

One such devout critic is Michael Waldon, whom has dedicated an entire blog (Connector Comments) to documenting his opposition to what he calls “the Con”; and his belief that this freeway project would be the worst thing to happen to Lafayette. I respect his right to oppose this project, but when his arguments are reduced to disassembled claims and distortions of facts, there is a need to correct the record.

And in the case of Lafayette Regional Airport, Mr. Waldon is, as we say, way, way off.

The main thesis of Waldon’s blog post challenging the Connector freeway and the LFT Runway 11-29 displacement falls upon the theory that the 350′ displacement understates by a factor of three the need for a much longer and more destructive runway extension. Essentially, he rips upon the proponents of the Connector for building their project with no concern for “building tall structures next to your airport”. Here’s how Waldon summarizes his beef with Connector proponents:

SUMMARY: The I-49 Connector FEIS identified unacceptable risk due to failure to meet FAA flight path obstruction guidance, resulting from the proposed interchange construction adjacent to the Lafayette Regional Airport. Without documenting calculations or rationale, the FEIS stated that in order to meet these minimum safety requirements, airport runway 11-29 would need to be displaced 350 feet southeast toward Bayou Tortue and the Cypress Island Swamp.

My calculations, based on FAA guidance, arrive at runway displacement considerably longer than that presented in the FEIS. Here, following FAA guidance, I calculated that the required displacement is 860 feet. This significant difference brings into question the economic, environmental, and engineering feasibility of the displacement. Impact of this displacement on flooding, wildlife, and wetlands should be carefully addressed and documented by DOTD.

The public attitude toward airport safety should always be conservative and circumspect. The Airport’s 1975 Master Plan concludes “Conditions at the airport’s periphery make expansion of its land area difficult or expensive or both.” Even beyond the impacts of runway displacement discussed above, it is simply inappropriate to choose to construct any tall structures on the periphery of our airport which is already severely constrained at its location. Tall structures like the University and Kaliste Saloom interchanges constrain future airport runway alignment adjustments, and impact the ability to meet current requirements and future safety requirements should FAA guidance on safety margins or approach slopes change for any reason.

Let’s analyze Waldon’s objections more closely, shall we?

The interchange closest to the glide path of Runway 11-29, as noted, is the University Avenue/Surrey Street interchange. Under the proposed Connector profile, I-49 would cross over University/Surrey at a maximum height of 16 feet, sloping downward to grade level right near where the flight path of Runway 11 crosses the US 90/Evangeline Thruway/Future I-49 right-of-way. The 11-29 glide path parallels and is 200 feet to the south of the Surrey/University centerline. With the adjusted RPZ glide path, the “end” of Runway 11 would be adjusted 350 feet further down from the current endpoint. This picture (from Waldon’s blog) summarizes the adjustment with respect to the current Thruway and Surrey/University.

Overview of Lafayette Regional Airport Runway 11-29,
with adjusted endpoint for displacement (yellow line) and
half of the Approach Surface. (via Connector Comments blog)

Seems foredooming, right? Except, this overview completely ignores the vertical profile. Here is the profile that Waldon uses for his post, taken from the 2002 I-49 Connector Final EIS (downloadable from LADOTD’s Lafayette Connector website here(Vol. 1) and here (Vol. 2)), which he uses for his argument of fear of planes crashing into the University/Surrey overpass.

Vertical profile of I-49 Lafayette Connector alignment
at University/Surrey interchange near LFT (from 2002
Final EIS, via Connector Comments blog)

You can see that the Runway Protection Zone minimum is set at 17 feet above the highest object height; which would put it generally at approximately 30 feet above the ground level of the runway at the point where the 11-29 glide path intersects with the Connector overpass. The RPZ is also sloped slightly to adjust to the slope of the grade of the overpass, thusly extending the RPZ height to cover the overpass as well.

However, that might even overstate slightly the impact to LFT. Here’s a much more recent profile of that section of the Connector freeway, based on the approved Selected Alternative, that was developed in 2007 during the initial Corridor Conceptual Study.

Profile of I-49 Lafayette Connector @ University/Surrey
interchange (from 2007 Conceptual Study, via
Lafayette Connector website)

As you can plainly see, the University/Surrey overpass is now a bit less steeply graded, and the University/Surrey centerline profile is depressed a bit; this must have been to reduce the height of the overpass as to relieve the penetration of the glide path. But, the height in general remains the same: roughly 30′ counting both the height of the overpass and the maximum clearance of 16 feet for vertical clearance for vehicles using the freeway mainline.

It is here where Waldon goes off the cliff. First, he sets up the measurements for FAA and FHWA standards, which is accurate enough.

Finally, it is necessary to estimate the height of objects above the roadway. This could include signs, streetlights, and aircraft warning lights. The FEIS does mention this, and suggests that special signage and lighting may be necessary. Thus, I will assume that the height of the vehicles on the roadway will be the tallest objects above the roadway. There is no Federal vehicle height requirement for commercial motor vehicles (CMVs). Most eastern states, including Louisiana, set a CMV height limit of 13.5 feet on most highways. Louisiana does allow heights of 14 feet on designated highways, and oversize permits can be routinely issued for heights up to 16 feet 5 inches. Without specific guidance from the Louisiana DOTD, it is unclear what height should be assumed. Here, I will simply assume a maximum height of 15 feet for all vehicles and objects on the roadway.

It should be noted that while Louisiana doesn’t have specific height requirements for vehicles using its roadways, Federal Interstate standards do require minimum height restrictions of 16.5 feet for overpasses of freeways, and 20 feet of clearance for covered/tunneled sections. Since the Connector will be an Interstate built as part of the I-49 South extension to New Orleans, I can assume that it will be built to those standards.

Assuming the peak height at the interchange structure controls the required runway displacement, the calculation of length for the approach surface is now straightforward.  The interchange height plus object height has an elevation of 60 feet (45+15). Adding the FAA 17 foot margin of safety gives a total elevation of 77 feet. Subtracting the runway height which defines the primary surface elevation then gives a height of 40 feet (77-37). At a slope of 34:1, the length of the approach surface to the primary surface is 1,360 feet (34×40). At this point along the approach surface, the approach surface width is 1408 feet (1000 + 0.3×1,360), or 704 feet on each side of the extended runway center-line (Figure 3). Adding the 200 foot width of the primary surface at the end of the runway gives a total distance form the peak of the interchange of 1,560 feet. The present distance is estimated to be 700 feet, so the total runway displacement required would be 860 feet (Figure 4). This is 510 feet longer than the value asserted in the FEIS. This difference significantly brings into question the economic, environmental, and engineering feasibility of the displacement.

The highlighted portion of Waldon’s quote gives his game away. 60 feet??? Really? But, I thought that the height of the University/Surrey overpass was only 12 to 15 feet; how did Waldon get to 40 feet? Simply, he gets his interchanges mixed up. The adjacent Kaliste Saloom Road interchange with the Connector freeway and the frontage roads does indeed include a 40 foot high ramp that is needed to clear the freeway mainline, the adjacent BNSF/UP railroad line, and another high ramp. There is one slight little problem, though; the Kaliste Saloom interchange is nearly 3,000 feet away from the RPZ glide path of Runway 11-29; and the offending ramp drops down to grade level to split to connect with both the northbound Connector mainline and the northbound frontage road long before it gets to the Runway 11-29 flight path. Here’s an overview, straight from the 2007 Conceptual Study:

Aerial profile of I-49 Lafayette Connector @
Kaliste Saloom Road & University/Surrey
interchanges & LFT (from 2007 Conceptual
Survey, via Lafayette Connector website)

As plainly seen from this profile, the Kaliste Saloom ramps are so far away from the Runway 11-29 glide path that it would take some very, very, very bad aircraft control for any plane to even threaten to hit even the highest overpass.

But, it doesn’t stop Michael Waldon from using the Kaliste Saloom ramps for his equation which concludes that a much steeper gradient for 11-29 would require a much longer runway displacement (860 feet, compared to the 350′ proposed in the ROD). This would require a much longer extension of 11-29 that would not only consume far more wetlands, but potentially threaten Bayou Tortue, a tributary that sets the boundary between the airport property and the surrounding wetlands. This is the proof that, in Waldon’s eyes, disqualifies the Connector as a valid alignment, and justifies his belief that a bypass would be much better for Lafayette.

If we adjusted Waldon’s measurements to reflect the reality of the University/Surrey overpass rather than his fantasy of placing the Kaliste Saloom ramps in front of the airport, they would be as follows:

Interchange height (16 feet) + maximum surface height (16 feet) = 32 feet (compared to 55 feet)

Add FAA 17 feet clearance zone = 49 feet (compared to 77 feet)

Subtract 37 feet for primary surface elevation height: 49 – 37 = 12 feet (compared to 77 -37 = 40 feet)

Length of approach surface to primary surface, using 34:1 slope: 12 * 34 = 408 feet (compared to 1,360 feet)

Add 200 feet overrun = 608 feet (compared to 1,560 feet)

Account for current 700 foot length of Runway 11-29: 92 feet of existing leeway (compared to shortage of 860 feet)

In other words, the existing Runway 11-29 is actually marginally suitable for adjusting to the glide path changes from the University/Surrey overpass, but it would be a rather tight fit. The 350 foot runway extension/displacement would certainly add the necessary margin of safety, and would be the maximum allowed that would least impact the adjacent wetlands and Bayou Tortue.

As I mentioned before, the recent changes in FAA regulations regarding construction of runways over wetlands has prompted the FHWA and LADOTD to reconsider modifying the University/Surrey overpass to possibly avoid displacing the RPZ glide path. (Listed as Potential Design Modification #10; the full list of proposed modifications can be found here.)Such a study, though, does not avoid the basic fact that, even with the wetland impact, the runway displacement would not be anywhere near the destroyer of Lafayette that folk like Michael Waldon would assume it to be.