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This document is a Request for Proposal (RFP) for the Lock & Dam 22 Fish Passage Improvement Project on the Upper Mississippi River near Saverton, Missouri and Pike County, Illinois. The U.S. Army Corps of Engineers, Rock Island District is seeking proposals for a project that includes demolition, construction of a rock ramp fishway, concrete bridge, ice/debris boom, sheet piling, concrete work, earthwork, stone/boulder placement, access ramps, building and deck construction, electrical work, networking, cybersecurity, surveying, and site restoration. The NAICS code is 237990 with a small business size standard of $45 million. The estimated contract value is between $25-100 million with a 898-day period of performance. This is an unrestricted best value tradeoff procurement. Interested parties must submit questions through the Projnet system. The RFP has been broken into 7 parts due to the large file size.