M-12 (Michigan highway)

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 between the state line at Ironwood and Crystal Falls
M-69 between Crystal Falls and Sagola
M-45 between Sagola and Iron Mountain
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Since 1926, M-12 north of the St. Ignace area has been replaced by: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