Minnesota Department of Transportation

511 Travel Info


Blatnik Bridge Project

SP 6981-26, Letting Summer 2026


MnDOT is planning to reconstruct the Blatnik Bridge and its approach roadways. The Interstate 535 Blatnik Bridge connects Duluth, Minnesota and Superior, Wisconsin and is the second largest bridge in Minnesota. The existing bridge is in poor condition, has high crash rates, and limits freight mobility due to weight limitations. This reconstruction project is being developed to update the structure to current standards, add bicycle and pedestrian facilities, and improve traffic operations. The project is tentatively scheduled to begin construction in 2027, although one or more smaller traditional projects may be executed prior to that time in order to prepare the site for construction and keep the process on schedule. MnDOT and the Wisconsin Department of Transportation (WisDOT) will cost share in this project and are jointly seeking federal funding grants to match current state funds allocated to the project.

Procurement schedule



  • Design and construction post-letting oversight will utilize consultant contracts