M-123 | ||||
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M-123 highlighted in red
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Route information | ||||
Maintained by MDOT | ||||
Length: | 96.071 mi (154.611 km) | |||
Existed: | 1936 – present | |||
Tourist routes: |
Lake Superior Circle Tour Tahquamenon Scenic Heritage Route |
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Major junctions | ||||
South end: | I-75 near St. Ignace | |||
H-40 in Trout Lake |
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North end: | M-28 near Newberry | |||
Location | ||||
Counties: | Mackinac, Chippewa, Luce | |||
Highway system | ||||
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H-40 in Trout Lake
M-28 near Eckerman
M-123 is a state trunkline highway in the eastern Upper Peninsula of the U.S. state of Michigan. It is one of only a few highways in Michigan that curve around and form a U-shape. In fact, M-123 has three intersections with only two state trunklines. It meets M-28 twice as a result of its U-shaped routing. M-123 also has a rare signed concurrency with a County-Designated Highway in Michigan; in Trout Lake, there is a concurrency with H-40. All of M-123 north of M-28 is a Scenic Heritage Route within the Michigan Heritage Route system.