Construction of Cofferdams at the Soo Locks, Sault Ste Marie, Michigan

Solicitation W911XK-09-B-0003, issued by the Department of Defense through the USACE Detroit District, concerns the construction of cofferdams at the Soo Locks in Sault Ste Marie, Michigan. This project is a 100 percent small business set-aside with an estimated value between 1 million and 5 million dollars. The scope of work includes excavation, fill, and piling, with technical specifications covering concrete, metals, instrumentation, earthwork, and specialized marine construction and diving operations. All work must comply with EM 385-1-1 safety standards and specific regulatory requirements for real estate and diving. The procurement process included several amendments and clarifications to ensure design integrity and regulatory compliance. Key updates included the incorporation of the Buy American Act for construction materials, the addition of a Partnering Clause, and multiple updates to wage determinations for mechanical dredging and marine construction across several states. The government maintained strict adherence to MDOT aggregate specifications to ensure proper material drainage and design integrity, while also providing guidance on sediment thickness tolerances for foundation excavation and safety guardrail requirements for personnel and equipment.