Mackinac Bridge Authority

Spanning the Straits of Mackinac since 1957

I wouldn’t travel to the bridge if I thought there was a possibility of a closure. How can I find out when the bridge might have to close for falling ice, and how can I find out when the bridge has been reopened?

Posted on November 10th, 2022

The Authority website ( is updated with current travel conditions for the bridge, including closures. Closure information is also posted on the Authority’s Twitter page, @MackinacBridge. People who are interested in receiving text messages about bridge closures can sign up for Mackinac County 911’s RAVE Alert System updates. There is no cost to receive these updates, aside from any texting fees from the participant’s mobile coverage plan. To opt into this text alert system, text “MacBridge” to 67283. The Michigan Department of Transportation (MDOT) also posts closure information on its network of dynamic message signs on both sides of the bridge, and local radio stations will share information about closures.

We try to stay in touch with customers during closures, but as we said, there aren’t a lot of updates that we can give aside from announcing the closure has ended. Predicting when that will occur isn’t something we can do.

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