Business U.S. Federal Route 20 Boone-Winnebago Counties
Business U.S. Federal Route 20 runs along a old alignment of U.S. Rt. 20 in Rockford and Belvidere. U.S. Rt. 20 was re-routed along a expressway on the southside of Rockford. BUSN. U.S. Rt. 20 passes through the following towns in Winnebago-Boone Counties. Rockford
The eastern end of BUSN U.S. Rt. 20 in Belvidere. The eastern end marker. BGS on NB I-39/U.S. Rt. 51; WB I-90. BGS on SB IL St Rt 2 in Rockford. EB BUSN U.S. Rt. 20 at it's western start point.