U.S. Federal Route 23 is a north-south highway in Central Bay County. It runs from the Bay/Saginaw County Line, near Bay City, to the Bay/Arenac County Line, near Worth. During the entire path through Bay County, U.S. Rt. 23 runs with Interstate 75. U.S. Rt. 23 passes through the following towns in Bay County. Bay City
Kawkawlin Woodville U.S. Rt. 23 is multi-plexed in Bay County. Interstate 75, throughout Bay County.
A junction marker on NB MI St Rt 84. A guide sign on NB MI St Rt 84. A guide sign on NB MI St Rt 84. NB I-75/U.S. Rt. 23 north of MI St Rt 84. NB I-75/U.S. Rt. 23 south of BUSN Spur I-75/U.S. Rt. 10/MI St Rt 25. A BGS on WB BUSN Spur I-75/MI St Rt 25.