Project Description

The LA 1 Improvement Project passed a comprehensive and rigorous Environmental Impact Study process, and the Record of Decision to build the elevated highway is authorized by the U.S. Federal Highway Administration in agreement with the Louisiana Department of Transportation and Development and in cooperation with the U.S. Environmental Protection Agency, the U.S. Army Corps of Engineers, the U.S. Coast Guard, and the National Marine Fisheries Service.

In a thorough and public review, spanning more than three years, all environmental permits were completed in 2004. These documents call for state of the art end-on construction, which nearly eliminates the construction impacts upon wetlands.


The LA 1 Highway Improvement Project includes pre-construction design and engineering, and four phases of highway construction:

Pre-Construction, Phases 1&2 COMPLETED                        $ 43,300,000

Phases 1 and 2 environmental clearance, preliminary engineering, rights-of-way acquisitions, and public utilities relocation complete.


Phase 1 – (Leeville to Port Fourchon) COMPLETED             $ 328,100,000

Construction of fixed-span, high-level, two-lane overpass over Bayou Lafourche at Leeville, toll facility, and associated interchanges opened July 2009.(4.4 miles)

Construction of two-lane elevated highway from Leeville to LA 3090 at Port Fourchon opened December 2011. (6.8 miles)Construction of two-lane elevated highway from Leeville to LA 3090 at Port Fourchon opened December 2011. (6.8 miles)

Phase 2 – (Leeville) Segment E - UNDER CONSTRUCTION    $ 13,248,000

Will widen existing bridge at a 90 degree curve in Leeville for 1750 feet and extend it northward by 390 feet. The widening of the intersection will accommodate a tie-in for the future elevated highway coming from Golden Meadow. 


Phase 2 – (Golden Meadow to Leeville) Segments A-D - CURRENTLY SEEKING FUNDS    $ 343,000,000

Two-lane elevated highway from Golden Meadow to Leeville (8.3 miles). Divided into 4 segments (A-D) for construction. Final design for Segments A-D complete by December 2018. Local funding was provided for geotechnical field work and mitigation. 


Phase 2 – (Upgrades to existing LA 1 from Port Fourchon to Grand Isle) NOT YET FUNDED


Phase 3 – (U.S. 90 to Larose)           $ 340,000,000 estimate

Four-lane at-grade highway from U.S. 90 to Larose. (19.5 miles)


Phase 4 – (Additional Lanes, Golden Meadow to Fourchon)           $ 660,000,000 estimate

Construction of additional two lanes of elevated highway from Golden Meadow to Port Fourchon, including the Leeville Overpass, and upgrades to LA 1 from Fourchon to Grand Isle.


Louisiana residents and businesses have agreed to pay tolls for the next 30 years to repay a federal transportation loan and bond sales that funded construction of Phase 1 of the LA 1 project. Now, our local financing capability for this nationally critical highway corridor is exhausted.


Construction of Phase 2 of the LA 1 Improvement Project - eight miles of elevated highway between Golden Meadow and the new Tomey Doucet Overpass in Leeville - is divided into Segments A,B,C, D and E.

200 OK


The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, [no address given] and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.