High Quality Content by WIKIPEDIA articles! M-311 is a 13.600-mile (21.887 km) long state trunkline highway in Calhoun County in the US state of Michigan that runs from the intersection of M-60 in Burlington north to I-94 at Exit 104 in Emmett Township. It was previously an unsigned state trunkline, meaning that no reassurance markers were used to identify the highway. The route mainly consists of 11 Mile Road, which was a county road prior to the 1998 rationalization process.