Multi-million dollar repair project on Mackinac Island’s M-185 completed

MACKINAC COUNTY, Mich., (WPBN/WGTU) — The repair work on M-185 on Mackinac Island is complete and on budget.

M-185, roughly 8 miles long, is the only state highway in Michigan that does not regularly allow automobile traffic.

According to The Michigan Department of Transportation (MDOT), most of the road is within, and maintained in cooperation with, Mackinac Island State Park.

In 2021, MDOT invested nearly $6 million to repair high-water and wave erosion damage on the shoreline along the highway.

Roughly four miles of the highway sustained severe damage that escalated in fall 2019 and winter 2020.

High water and storm damage undermined the roadway along Mackinac Island’s M-185 prior to repair work. (MDOT photo)

The project, which began in May, repaired and upgraded armor stone along M-185, primarily along the eastern and northern shore of the island.

Work also included pavement repairs to previously washed out and damaged roadway.

Pavement markings will be painted on the road next year as part of a region-wide painting contract.

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