Business U.S. Federal Route 127 is a north-south highway through St. Johns. It runs on a former alignment of U.S. Rt. 27. This business route goes from exit 99 on U.S. Rt. 127, north of St. Johns, south through St. Johns to the Price Road interchange on U.S. Rt. 127 south of St. Johns. BUSN U.S. Rt. 127 passes through the following town in Clinton County. St. Johns
BUSN U.S. Rt. 127 is not multi-plexed in Clinton County. BUSN U.S. Rt. 127 intersects the following highways in Clinton County. U.S. Rt. 127 , near St. Johns. Michigan State Route 21, at St. Johns.
A BGS on SB U.S. Rt. 127. SB BUSN U.S. Rt 127 south of U.S. Rt. 127, north of St. Johns. SB BUSN U.S. Rt. 127 at MI St Rt 21. A junction marker on EB MI St Rt 21.
