Ambassador Bridge
Detroit: Bicyclists are prohibited

Blue Water Bridge
Port Huron: Bicyclists are prohibited and MDOT personnel cannot transport individuals across the bridge for health/safety and liability reasons. Other options include:
City Cab, requires advance notice to transport bicycles, between $100-150, 810-984-4109
Port Huron Taxi, van, between $100-150, 810-989-9719
Walpole Algonac Ferry, in Algonac,

International Bridge
Sault Ste Marie: Bikes can be ridden across to Canada. There is a toll and you will need your passport.

Mackinac Bridge
Mackinaw City/St. Ignace: Bicyclists are not allowed to cross the Mackinac Bridge on their own. The Mackinac Bridge Authority will transport you across the bridge in Mackinac Bridge Authority vehicles. There is a fee, check with the authority.

If you are traveling northbound, there is a phone at the south end of the bridge. Instructions for using the phone are posted in the phone box. If you are southbound, please go to their service window in the administration building and ask for assistance. The administration building is located on the north end of the Mackinac Bridge on the east side of the toll plaza. The service is provided on an as needed basis. If you need additional information please call the Bridge Authority at 906-643-7600.