Michigan State Route 15 is a north-south in Southeatern Bay County. It runs from the Bay/Saginaw County Line, near Munger, to Michigan State Route 25, at Bay City. MI St Rt 15 passes through the following towns in Bay County. Bay City
MI St Rt 15 is not multi-plexed in Bay County. MI St Rt 15 intersects the following highways in Bay County. Michigan State Route 138, near Munger. Michigan State Route 25, at Bay City.
