State highway in Roscommon County, Michigan, United States
M-157 is a short state trunkline highway in the US state of Michigan. The highway is entirely within Roscommon County in the Lower Peninsula. It is the fourth-shortest state highway in the system,[1] and it serves as a connector route between M-18 and M-55 just east of Prudenville. The current roadway was built and designated as M-157 in the 1930s.
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