1337508: 100th St. Bascule Bridge Over the Calumet River Rehabilitation

The Illinois Department of Transportation is soliciting bids for comprehensive rehabilitation of the 100th Street Bascule Bridge Over the Calumet River in Chicago, with proposals due November 6, 2026.

The scope encompasses structural repairs, mechanical system upgrades, and restoration work to restore the bridge to functional condition. Deliverables include engineering assessments, detailed construction plans, and project management services throughout the rehabilitation phase. The contractor must demonstrate qualifications and experience with similar bridge projects and comply with IDOT standards and specifications for rehabilitation work.

The contract is funded through IDOT's capital improvement program with state funding sources dedicated to bridge infrastructure rehabilitation. The contract term extends through project completion, with specific milestones and deliverable dates established in the project schedule. Pricing is structured according to the detailed scope of work with itemized costs for engineering, design, and construction management services.