Louisiana Department of Transportation & Development (LADOTD)

Lafourche Parish, LA

ECM is currently providing construction engineering and inspection (CE&I) services for this $463 million elevated highway project in Lafourche Parish, LA.  The project consists of 9.48-mile elevated concrete bridge structure and connect with an existing 9.0-mile Phase 1 Leeville bridge in Leeville, LA. This elevated highway project marshland is being constructed using “top-down” construction method by building a moveable 2,165’ Steel Trestle bridge supporting the Equipment for building the Bridge below and connect Golden Meadow to Leeville. Once completed the overall project will be one of the longest bridges in Louisiana and the United States with over 18 miles of elevated highway.

The project consists of precast concrete pile installation, drilled shafts, precast prestressed concrete girders, concrete bridge decks, T-wall construction, PCCP removal and replacement, installation of tolling equipment, and drainage improvements to existing roadways. The bridge will utilize 108-foot spans with 30-inch precast concrete piles. ECM inspected and documented all construction driving 18”, 24” and 30“precast concrete piles, (532,217 linear feet total), placement of steel for bent caps and bridge decks, hanging of concrete girders, installing precast concrete caps and sampling and testing concrete for cap and bridge deck pours.  ECM is also providing all materials for sampling for the project and delivers the soil, aggregate, steel, concrete, asphalt and miscellaneous materials to the DOTD or private lab hired for this project.