Michigan Highway 231 is a short north-south surface road, serving as an alternate to US Route 31 in west-central Michigan. Whereas the four-lane high-speed corridor of US Route 31 plows right through Grand Haven and Ferrysburg, Michigan Highway 231 lies farther to the east. The northwestern angle traversed by Interstate 96's at its westernmost extent, combined with Michigan Highway 231 will provide a sort of eastern bypass of the Grand Haven area. The northern end of Michigan Highway 231 is a split with Interstate 96 that allows the continuation of this bypass. Don't worry, access toward or from the east on Interstate 96 is provided via Michigan Highway 104, which crosses Michigan Highway 231 very near this northern terminus. Michigan Highway 231 runs straight south for eight miles before ending at Michigan Highway 45 in Robinson Township. Traffic seeking to complete the bypass around Grand Haven will use the western leg of Michigan Highway 45 to or from this southern terminus.
My photo of Michigan Highway 231 signage comes from the highway's southern terminus at Michigan Highway 45. The guide assembly shown identifies the northerly turn onto Michigan Highway 231, for the sake of eastbound travelers on Michigan Highway 45. This photo was taken along a drive to Traverse City in March 2018.