U.S. Federal Route 10 is an east-west highway in Southwestern Bay County. It runs from the Midland/Bay County Line, near Midland, to Interstate 75/BUSN Spur I-75/Michigan State Route 25, at Bay City. U.S. Rt. 10 passes through the following towns in Bay County. Auburn
WB U.S. Rt. 10 east of Midland. EB U.S. Rt. 10 at Flajole Road. WB U.S. Rt. 10 at MI St Rt 47. WB U.S. Rt. west of Auburn. WB U.S. Rt. 10 west of I-75; BUSN Spur I-75; U.S. Rt. 23; MI St Rt 25. A BGS on NB I-75/U.S. Rt. 23. A BGS on NB I-75/U.S. Rt. 23.