 M @-@ 311 is a 13 @.@ 7 @-@ mile @-@ long ( 22 @.@ 0 km ) 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 . 
