Pre-Solicitation Synopsis - LOCK AND DAM 25 NEW 1,200 FT LOCK NAVIGATION AND ECOSYSTEM SUSTAINABILITY PROGRAM (NESP)

The U.S. Army Corps of Engineers (USACE), St. Louis District, is planning the construction of a new 1,200-foot lock at Lock and Dam 25. This project is part of the Navigation and Ecosystem Sustainability Program (NESP) and is located on the Mississippi River, approximately 61.5 miles upstream from St. Louis. The work involves large-scale civil engineering and marine construction to improve regional navigation and ecosystem health. The procurement is classified under NAICS code 237990, Other Heavy and Civil Engineering Construction, with no small business set-aside currently designated. The government has set a response deadline for July 15, 2026. All proposal submissions must be handled through the Procurement Integrated Enterprise Environment (PIEE) Solicitation Module. Documentation provided by the agency includes registration guides and training resources for the PIEE system, which specify that vendors must assign a 'Proposal Manager' role within the module to submit offers. The provided documentation focuses on the administrative and technical requirements for electronic submission via the Procurement Integrated Enterprise Environment (PIEE). Recent updates have established the current response timeline and provided metadata for the upcoming solicitation. Construction of a new 1,200-foot lock chamber at the existing Lock and Dam 25 facility.