Illinois Route 97 (IL 97) is a north–south state highway in the central and western portions of the U.S. state of Illinois. It extends from I-55 Business in Springfield northwest to U.S. Highway 150 (US 150) near Galesburg. It crosses over the Illinois River on a bridge west of Havana. This is a distance of 102.23 miles (164.52 km).

U.S. Route 150 is a 571-mile (919 km) long northwest–southeast United States highway, signed as east–west. It runs from U.S. Route 6 outside of Moline, Illinois to U.S. Route 25 in Mount Vernon, Kentucky.