327_C_20_25 Lower Sill Plan Elevation and Sections.pdf

This request for information seeks capabilities statements from small businesses for a design-build project to replace six concrete diffuser structures at the Snell Lock of the Saint Lawrence Seaway. The Great Lakes St. Lawrence Seaway Development Corporation plans to replace three diffusers in the first winter season and three more in the second winter season. Each diffuser comprises approximately 190 cubic yards of reinforced concrete and measures approximately 80 feet long, 14 feet wide, and 13 feet tall with sixteen openings. Interested firms should submit relevant project experience, descriptions of three similar projects completed in the last ten years, and contact information for references by July 14, 2022 to be considered for the subsequent request for proposals. The work will take place during the annual winter navigation shutdown when the lock is dewatered from early January through early March.