M 12 (Michigan highway)

Updated on Jan 12, 2024

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Length: 406.63 mi (654.41 km)
Location: Ironwood–Sault Ste. Marie Existed: c. July 1, 1919–November 11, 1926

M-12 is a former state highway in the Upper Peninsula of Michigan. It was replaced in 1926 by:

U.S. Highway 2 in Michigan (US 2) between the state line at Ironwood and Crystal Falls

M-69 between Crystal Falls and Sagola

M-45 between Sagola and Iron Mountain (now M-95)

US 2 between Iron Mountain and Sault Ste. Marie

Since 1926, M-12 north of the St. Ignace area has been replaced by:

Business Loop Interstate 75 through St. Ignace

County Road H-63 to the Rogers Park area

M-134 to Cedarville

M-129 to Sault Ste. Marie

Business Spur Interstate 75 in Sault Ste. Marie

References

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