Inactive

The U.S. Army Corps of Engineers (USACE), Rock Island District, has a requirement for Mississippi River Basin, Lock 19, Keokuk, IA, Nose Pier Replacement and Bullnose Recesses. The work includes but i... The U.S. Army Corps of Engineers (USACE), Rock Island District, has a requirement for Mississippi River Basin, Lock 19, Keokuk, IA, Nose Pier Replacement and Bullnose Recesses. The work includes but is not limited to: a base bid and two options. The base bid extends the riverwall monolith upstream and includes mobilization, hydrographic surveys, concrete removal above and underwater, mechanical dredging, underwater rock excavation, monolith extension using precast concrete segments and tremie concrete placement, checkposts and other appurtenances, fabrication of protection plate assembly, and electrical work. Option 1 constructs a bulkhead recess in the landwall and includes fabrication and installation of a cofferbox, concrete removal above and underwater, fabrication and installation of a bulkhead recess, concrete placement above and underwater, fabrication and installation a of protection plate assembly, and electrical work. Option 2 constructs the bulkhead sill and includes mobilization, hydrographic surveys, mechanical dredging, drilled shafts, stay-in-place formwork, and tremie concrete placement, and a test dewatering of the upstream chamber from the new bulkhead sill to the guard gate, bulkheads will be government furnished equipment. NAICS: 237990 Size Standard: $45,000,000.00 Magnitude: Between $25,000,000 and $100,000,000 Unrestricted Lowest Priced Technically Acceptable Request for Proposal It is anticipated that the formal solicitation will issued on or around 23 June 2025.