Michigan Highways: Since 1997.

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Map of M-108 Original Configuration

So-called "three-legged" routes are rare over the history of state trunklines in Michigan and, thus, may be hard to comprehend. The map below illustrates the routes of the various state trunkline highways at Mackinaw City from 1928 through late-1957.

Map of M-108 Original Configuration
© Christopher J. Bessert, All Rights Reserved.