Illinois State Route 3 is a north-south highway in Union County. This runs along the western portion of the county. It is in the Shawnee National Forest during the entire time it is in Union County. IL St Rt 3 passes through the following towns in Union County. Ware
Wolf Lake IL St Rt 3 is multi-plexed in Union County. Illinois State Route 146, from the Alexander/Union County Line to Ware.
