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David R. Miller, PE
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LA 1: A Context Sensitive Solution David R. Miller, PE Existing LA 1 provides the only land access to Port Fourchon and the community of Grand Isle (located in Jefferson Parish) east of Port Fourchon. The existing roadway along LA 1 consists of a two-lane 28-foot wide meandering rural arterial road built in the 1920s that runs through coastal Louisiana on the natural levee of Bayou Lafourche. Tidal waters quickly cover the existing LA 1 as hurricanes or tropical storms approach the Louisiana coast. The project is a 16.3 mile arterial new four-lane, fully controlled access, elevated highway on a new location in Lafourche Parish, Louisiana, approximately 50 miles south of the New Orleans metropolitan area. The roadway would be elevated above the 100-year base flood elevation and includes a navigable waterway crossing which will require a 350-foot horizontal and 73-foot vertical clearance (fixed-span high-level bridge over Bayou Lafourche). Phase I of this Project includes the construction of a two-lane bridge over Bayou Lafourche at Leeville, with interchanges and connector roads immediately north and south of Leeville as well as an elevated span from Leeville south to Hwy. 3090 (Port Fourchon’s access road). |