M-76 is a former
state trunkline highway designation in the
Lower Peninsula of the US state of
Michigan. The highway's designation was
decommissioned when the last section of it was converted to freeway as a part of the present-day
Interstate 75 (I-75). At that time, M-76 extended from
US Highway 23 (US 23) near
Standish northwesterly to I-75 south of
Grayling. Two sections of the route followed freeways with a two-lane highway in between to connect them. The former routing of M-76 through
West Branch before that city was bypassed was initially redesignated
Business M-76 (
Bus. M-76). The highway itself ran through mixed fields and forests bypassing several other towns in the region.