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Bridges and crossings

A freighter in fog going under the Mackinac Bridge.
Department of Transportation

Bridges and crossings

Publicly-owned bridges

Michigan has four public bridges: Mackinac, Blue Water, Gordie Howe International and International. For tolls, travel documents and traffic updates, visit the individual bridge website.

  • An an ore boat passing underneath the Blue Water Bridge.

    Blue Water Bridge

    The Blue Water Bridge spans the St. Clair River, connecting Port Huron, Michigan, and Point Edward and Sarnia, Ontario.

  • The Gordie Howe International Bridge during construction.

    Gordie Howe International Bridge

    The Gordie Howe International Bridge spans the Detroit River, connecting Detroit, Michigan, and Windsor, Ontario.

  • The International Bridge in red, white, and blue lights at night.

    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 during the summer.

    Mackinac Bridge

    The Mackinac Bridge spans the Straits of Mackinac, connecting Michigan's upper and lower peninsulas.

Privately-owned crossings

Michigan also has two privately-owned border crossings: the Ambassador Bridge and the Detroit Windsor Tunnel. For tolls, travel documents and traffic updates, visit the individual crossing website.
  • Ambassador Bridge

    The Ambassador Bridge spans the Detroit River and connects Detroit, Michigan, with Windsor, Ontario.

  • Detroit Windsor Tunnel

    The Detroit Windsor Tunnel connects downtown Detroit, Michigan, with Windsor, Ontario.