^Westbound trailblazer leaving the Mattis Avenue intersection in Champaign, October 2019.
Illinois Route 10 runs east-west in central Illinois, extending from Champaign to points west, including Clinton and Lincoln. The western end is in Mason County, and Illinois 10 connects to areas that are north of Springfield and Decatur, but south of Peoria and Bloomington. Illinois 10's junctions will be listed from east to west, because that's the direction in which I've traveled it.
Illinois 10's eastern end is at a bend in US Route 150 in the city of Champaign: