Michigan Department of Transportation—M-185 Shoreline Repair and Pavement Restoration

In recent years, water levels surrounding Mackinac Island have risen sharply, causing erosion for M-185. This 8-mile stretch is the only state highway in Michigan that does not regularly allow automobiles—mostly just bicycle, pedestrian, and horse traffic. To address these concerning rising water levels, Michigan DOT completed a $5.48 million project focused on shoreline erosion and pavement repairs to ensure access to the route around the island for many years to come. The project also ensures safe emergency and fire access to historic island homes and helps the local economy, as more than 600,000 people visit the island each year.