Michigan Highways: Since 1997.

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M-22 & M-109 junction route signage in Glen Arbor, Michigan
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Former M-111
Historic US-102 Route Marker On to Next Routes:
Former M-112
Initially conceived of as a spur routing, beginning at US-12 in Detroit and proceeding west-southwesterly across much of the Lower Peninsula before dipping into Indiana at Elkhart, where it terminated, US-112 later became a "loop" route rejoining its parent US-12 at New Buffalo. For many years, US-112 was the "other" Detroit-to-Chicago route, but when I-94 replaced the existing US-12, US-112 was decommissioned and its parent replaced it in its entirety. In the end, US-112 only existed for 36 years. Please see the Historic US-112 page for more information on this historic U.S. Highway.
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