Michigan Highway 124 is a short route in rural southeastern Michigan. It sets out heading east from Brooklyn, Michigan, turning southerly for its last couple of miles to end at US Route 12. Michigan Highway 124 lies in an area southeast of Jackson and southwest of Ann Arbor. The northwestern end is at Michigan Highway 50 in Brooklyn. The southeastern end, at US Route 12 as mentioned before, is near the entrance to Hayes State Park. Michigan Highway 124's main reason for existing in the present day is probably to provide access to Hayes State Park. It wouldn't be the only state route designation in Michigan to exist for the purpose of accessing a state park (see Michigan Highway 149, for example).
My photo of Michigan Highway 124 signage comes from its southeastern end at US Route 12. The aperture looks west down US Route 12, at the scene drivers find when they approach the junction with Michigan Highway 124. The junction marker alerting those drivers of the upcoming intersection with Michigan Highway 124 is depicted here. This photo was taken in March 2019 during a drive around central and southern Michigan.