High Quality Content by WIKIPEDIA articles! 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. The highway itself ran through mixed fields and forests bypassing several other towns in the region.