This document provides details on a federal contract solicitation for upstream approach wall construction work at the Soo Lock Complex in Sault Ste. Marie, Michigan. The Detroit District of the US Army Corps of Engineers is seeking a firm fixed price construction contract to complete the scope of work outlined in the solicitation documentation. The NAICS code for this project is 237990 for other heavy and civil engineering construction, and the size standard is $39.5 million. There is no set-aside designated for this full and open competition. Interested offerors should monitor the beta.SAM.gov website for any amendments, responses to questions, or other updates related to this solicitation. Proposals must be submitted electronically. The primary point of contact for inquiries is the contract specialist Steve Hutchens via email.