Gulf Intracoastal Waterway West Closure Complex

The GIWW West Closure Complex is a primary flood protection component of the Army Corps of Engineer's mission to protect the City of New Orleans and the largest pump station in the US. Langan spearheaded a full-depth pilot test and computer modeling program to evaluate the potential for base heave of the deep excavations, dewatering techniques, and overall constructability. Langan also provided geotechnical services, road subgrade stabilization, dewatering, spud piles, and access road construction.