^Southbound trailblazer at Illinois 173 near Poplar Grove, February 2021.
Illinois Route 76 runs north-south in Boone County, connecting Belvidere with Wisconsin Highway 140, taking travelers to points north in the state of Wisconsin. This is the next north-south state highway east of Rockford and Interstate 39.
Illinois 76 begins at the Wisconsin border, continuing south from Wisconsin Highway 140, south of Clinton, WI:
The southern end of Illinois 76 is at BusinessUS Route 20, specifically the business alignment for Rockford. Travelers can continue south to the main branch of US Route 20 and Interstate 90 by using this eastern leg of the Business Route south: