Replace Str Bridge, Grading, Interim Sur

The South Dakota Department of Transportation (SDDOT) is soliciting bids for project EM-P 0044(207)290, which involves the replacement of the SD44 Missouri River Bridge (Platte/Winner) and associated infrastructure. The scope of work includes structural bridge replacement, approach grading, and interim surfacing, as well as the construction of a 4-12X8 CIP RCBC structure and approach grading on 280th Street in Douglas County. Key technical requirements encompass structural steel and concrete work, excavation of approximately 626,771 cubic yards, topsoil application, and the installation of permanent signage and pavement markings. The project also includes strict environmental commitments regarding wetland mitigation and aquatic resources. Bids must be submitted electronically via the South Dakota Electronic Bid System by July 29, 2026, with a bid opening scheduled for August 5, 2026. The project has a substantial completion date of June 21, 2030, though specific field work for the Douglas County structure is due by November 19, 2027. This is a Federal-aid construction contract requiring compliance with the Davis-Bacon Act for labor standards and FHWA 1273 provisions. Contractors must perform at least 30 percent of the total contract price with their own organization and adhere to strict Equal Employment Opportunity and affirmative action mandates. Acceptance of the work is based on site inspections and International Roughness Index (IRI) testing conducted by the SDDOT.