Be aware of fake MDOT texts demanding toll or traffic ticket payments. MDOT does not operate any toll roads. Contact the Michigan Attorney General for information on how to identify scams and file a complaint.
Bridges and Structures
Bridges and Structures
The Bureau of Bridges and Structures develops and implements statewide policies to ensure Michigan’s bridges and structures are safely designed, built, maintained, and preserved through efficient and innovative practices.
Questions? ContactRebecca Curtis, Chief Bridge Engineer/Bureau Director, or Deb Outwater at 517-599-8147.
Designing, building and preserving structures
Structure Design
Statewide design support, plan preparation and delivery, specifications, and estimates for bridges, culverts and other ancillary structures.
Structure Construction
Statewide construction support for projects with structural elements such as bridges, retaining walls, and sign or lighting support structures.
Structure Preservation and Management
Oversees the bridge capital outlay program, National Bridge Inventory (NBI) and preservation efforts.
Geotechnical Services
Supports planning, design, construction and maintenance of geotechnical features critical for MDOT’s bridge and heavy civil infrastructure.
Michigan Bridge Conditions
Bridge condition ratings are an important tool for transportation asset management.
Launch the Michigan Bridge Conditions web mapPublicly-owned bridges
Michigan has four public bridges (Mackinac, Blue Water, Gordie Howe International, International) and two private border crossings (Ambassador Bridge, Detroit-Windsor Tunnel). For tolls, travel documents, and traffic updates, visit the individual bridge or crossing website.
Blue Water Bridge
The Blue Water Bridge spans the St. Clair River, connecting Port Huron, Michigan, and Point Edward and Sarnia, Ontario.
Gordie Howe International Bridge
The Gordie Howe International Bridge spans the Detroit River, connecting Detroit, Michigan, and Windsor, Ontario.
International Bridge
The Sault Ste. Marie International Bridge spans the St. Marys River, connecting Sault Ste. Marie, Michigan, and Sault Ste. Marie, Ontario.
Mackinac Bridge
The Mackinac Bridge spans the Straits of Mackinac, connecting Michigan's upper and lower peninsulas.