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Northbound I-75 lane closure at M-123 overpass begins Oct. 9 in Mackinac County
October 02, 2025
NEWBERRY, Mich. - The Michigan Department of Transportation (MDOT) is investing about $500,000 to perform substructure repairs on the M-123 overpass at I-75 in Mackinac County. This is additional pier repair work to a rebuilding project completed last year.
County:
Mackinac
Highways:
M-123
I-75
Closest community:
St. Ignace
Start date:
Thursday, Oct. 9, 2025
Estimated end date:
Friday, Nov. 14, 2025
Traffic restrictions:
Drivers should expect the right lane of northbound I-75 to be closed at the overpass via a concrete barrier wall. A 12-foot lane width restriction will be in place with a posted speed limit of 60 mph; 45 mph where workers are present.
Jobs numbers:
Based on economic modeling, this investment is expected to directly and indirectly support five jobs.
Safety benefit:
This work will extend the lifespan of the structure and increase safety for motorists.
Media Contact: