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New culvert installation and concrete pouring brings M-20 closer to reopening in Isabella County

MT. PLEASANT, Mich. -The Michigan Department of Transportation (MDOT) is continuing work to reopen M-20 (Remus Road) between Sherman Road and Costabella Avenue in Isabella County.

On Thursday, March 12, a failed culvert on M-20 over Pony Creek prompted MDOT to close the roadway in both directions. Crews have been working to repair the culvert and reopen the roadway to traffic as soon as possible.

Earlier this week, sections of concrete pipe were placed to expediate repairs due to delays caused by securing an entire culvert. Crews began concrete pouring on Friday, March 27, to replace the road surface.

The concrete pavement will need up to six days of cure time to gain strength before the road can be reopened to traffic. Concrete was the selected material due to seasonal availability of asphalt.  

This timeline is dependent on weather and is subject to change. Future work will include building a new, permanent structure, likely in 2027.

Traffic is temporarily detoured via County Line Road, Blanchard Road and Coldwater Road. Truck traffic is currently detoured via Winn Road, M-46 and M-66.

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