U.S. Federal Route 20 is a east-west highway across Central St. Joseph County. From the La Porte/St. Joseph County Line to the St. Joseph Valley Parkway. At the South Bend Metro Area, U.S. Rt. 20 runs along the St. Joseph Valley Parkway on the west and southside of town. U.S. Rt. 20 passes through the following towns in St. Joseph County. New Carlisle Plainfield South Bend
U.S. Rt. 20 is multi-plexed in St. Joseph County. U.S. Rt. 31, at South Bend.
A BGS on NB U.S. Rt. 31. A BGS on NB U.S. Rt. 31. NOTE: The "BY-PASS" banner. A BGS on SB BUSN U.S. Rt. 31. WB U.S. Rt. 20/NB U.S. Rt. 31 west of U.S. Rt. 31/BUSN U.S. Rt. 31. A BGS on NB Mayflower in South Bend. WB U.S. Rt. 20/NB U.S. Rt. 31 on the southwest side of South Bend. A marker on WB U.S. Rt. 20/NB U.S. Rt. 31. WB U.S. Rt. 20/NB U.S. Rt. 31 south of IN St Rt 23. A BGS on WB IN St Rt 2. WB U.S. Rt. 20/NB U.S. Rt. 31 north of IN St Rt 2. A BGS on SB U.S. Rt. 31. A BGS on WB U.S. Rt. 20/NB U.S. Rt. 31. A BGS near the South Bend Airport. EB U.S. Rt. 20 at New Carlisle.
