Illinois Route 82 is a north-south highway strictly in Henry County, the next county east of the Quad Cities. It forms the backbone of the county, almost reaching the northern county border, and almost reaching the southern border, too.
The northern end of Illinois 82 is east of Joslin, at Illinois 92:
Illinois 82 joins US Route 6 east in Geneseo, the largest town in Henry County...
On the two routes' way out of Geneseo, US Route 6 splits from Illinois 82: