Mackinac Bridge Crash: Two-Vehicle Collision Injures Multiple People in Michigan

ST. IGNACE, Mich. — A serious two-vehicle collision on the Mackinac Bridge early Wednesday, September 23, 2026, left multiple people injured and temporarily closed the bridge in both directions.

Michigan State Police said the crash occurred at approximately 3:30 a.m. during the early morning hours. A preliminary investigation found that both vehicles were traveling southbound when one vehicle rear-ended the other. Multiple people were injured, including two who suffered serious injuries.

The collision prompted an emergency response involving Michigan State Police, the Mackinac Bridge Authority and other agencies. Authorities closed the bridge while investigators worked to document the crash and emergency crews treated those injured.

The closure affected traffic connecting Michigan’s Upper and Lower peninsulas. The Michigan Department of Transportation reported that the bridge remained closed for several hours, with all lanes reopening shortly before 8 a.m. Wednesday after the on-scene investigation was completed.

Authorities have not released the identities of those involved or provided additional information about their medical conditions beyond confirming that two people were seriously injured. The circumstances leading to the rear-end collision remain under investigation.

The Michigan State Police St. Ignace Post is leading the investigation, with assistance from the Mackinac Bridge Authority and other agencies. Police said further details would be released as they become available.

For motorists, the immediate disruption has ended, with the bridge now open to traffic. However, drivers traveling through the area are advised to remain attentive to any additional traffic or investigative activity.

As of the latest available reports, no fatalities have been announced in connection with the Mackinac Bridge crash. The investigation remains ongoing.