M-185 (Michigan highway)
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M-185 is a highway in the U.S. state of Michigan that circles Mackinac Island, a popular tourist destination, along the island's shoreline. A narrow paved road of 8 miles (13 kilometers) in length, it offers highly scenic views of the Straits of Mackinac that divide the Upper Peninsula and the Lower Peninsula of Michigan.
M-185 passes by several key sites within Mackinac Island State Park, including Fort Mackinac, Arch Rock, British Landing, and Devil's Kitchen. The first city ordinances banning all motorized vehicles from the island were passed in 1896, with similar state park rules coming about a decade later. As such, other than a handful of emergency and utility vehicles as well as others by special, limited-time permit, no cars or trucks are allowed on the island and no motorized vehicles appear on M-185. Traffic on this highway is by foot, on horse or by horse-drawn vehicle, or bicycle. It also has no connection to any other Michigan state trunkline highways— as it is on an island— and is accessible from elsewhere only by passenger ferry.
One of the only known motor vehicle collisions on Mackinac Island occurred on M-185 at the head of the Shepler passenger ferry dock, when the island's fire truck slightly damaged the island's ambulance on May 13, 2005. Both vehicles were responding to a report from the ferryboat that an injured passenger required medical attention.
The City of Mackinac Island, which shares jurisdiction over Mackinac Island, calls M-185 "Main Street" within the built-up area on the island's southeast quadrant, and "Lake Shore Road" everywhere else.
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