Interstate Bridge

Interstate Bridge is a steel and concrete road structure that connects Wisconsin and Michigan across a waterway. The span carries vehicles between the two states and serves as a vital part of regional transportation.

The bridge opened in 1929 and established the first permanent road connection between these areas of Wisconsin and Michigan. This link marked an important step in developing the regional transportation network for both states.

This structure connects two separate communities and allows daily movement of people between Wisconsin and Michigan. Residents rely on it to maintain relationships, work opportunities, and shared activities across the state line.

Expect regular vehicle traffic during daytime hours, so allow time for crossing during peak periods. Winter weather can affect driving conditions on the structure, so extra caution is advisable during colder months.

Travelers experience crossing a state boundary while using the structure and feel the transition between two separate jurisdictions. The location creates a rare moment of physically moving from one state government area to another.

Location: Wisconsin

Location: Michigan

Inception: 1929

Official opening: 1929

GPS coordinates: 45.10310,-87.62630

Latest update: December 12, 2025 08:00