MACKINAC COUNTY, Mich. – Work on the M-123 overpass at I-75 in Mackinac County is underway as part of a $2 million Michigan Department of Transportation (MDOT) investment to rebuild three bridges in the eastern Upper Peninsula. Work on all three bridges is expected to be completed by early November.
Southbound I-75 will have one lane closed at the M-123 overpass beginning Oct. 1. Traffic will be restricted to a 12-foot maximum width with a posted speed limit of 60 mph; 45 mph where workers present.
The project also involves repairing the I-75 bridge over the Carp River and the M-134 bridge over the Pine River in Mackinac County. Work on the M-134 structure includes substructure horizontal surface sealer, substructure repair and slope paving. Based on economic modeling, this investment is expected to directly and indirectly support 24 jobs.
This work will extend the service life of the existing bridges to maintain safe roadways for all users.
