what is m-179 (michigan highway)?
A state trunkline highway
M-179 (Michigan highway)
M-179 is a state trunkline highway in the western portion of the US state of Michigan. It runs from US Highway 131 (US 131) at exit 61 outside of Bradley to M-43 just west of Hastings in the Lower Peninsula. 
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M-179 (Michigan highway) [SEP] Introduction
M-179 is a state trunkline highway in the western portion of the US state of Michigan. It runs from US Highway 131 (US 131) at exit 61 outside of Bradley to M-43 just west of Hastings in the Lower Peninsula. The highway crosses through forest land and provides access to state recreational areas. M-179 has been given the Chief Noonday Recreational Heritage Route designation by the Michigan Department of Transportation (MDOT). Prior to October 1998, this highway was the eastern portion of county road A-42. The number was formally assigned by the next year. This is not the first time the number was used in Michigan, an unrelated M-179 previously existed in the 1930s through the 1950s farther north.