U.S. Federal Route 127 is a north-south highway in Central Clinton County. It runs from the Clinton/Gratiot County Line, near Eureka, to the Clinton/Ingham County Line, near Lansing. U.S. Rt. 127 passes through the followng town in Clinton County. St. Johns
Branches of U.S. Rt. 127 in Clinton County. SB U.S. Rt. 127 at the Clinton/Gratiot County Line. SB U.S. Rt. 127 north of St. Johns. A junction marker on EB MI St Rt 21. SB U.S. Rt. 127 south of MI St Rt 21. SB U.S. Rt. 127 at Howe Road. SB U.S. Rt. 127 at I-69. SB U.S. Rt. 127 south of I-69.