^Looking north on Illinois 180 from the southern end near Williamsfield at US Route 150, March 2019.
Illinois Route 180, painfully close to Interstate 180, is a lightly-traveled north-south route in eastern Knox County. It runs through Williamsfield and no other towns.
Illinois 180 begins at Illinois 17, as it turns from southbound to eastbound south of Galva:
Illinois 180 begins at Illinois 17, as it turns from southbound to eastbound south of Galva:
Illinois 180 meets Illinois 167 at that route's eastern end near the small town of Victoria:
Illinois 180 reaches its southern end at US Route 150, about halfway between Peoria and Galesburg.
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