Illinois Route 203

Illinois Route 203
Route information
Maintained by IDOT
Length:	9.51 mi[1] (15.30 km)
Existed:	1964[2] – present
Major junctions
South end:	Collinsville Road in Fairmont City
	I-55 / I-70 / US 40 in Fairmont City
North end:	I-270 in Granite City
Location
Counties:	St. Clair, Madison
Highway system
Illinois State Highway System Interstate U.S. State Tollways ← IL 192 IL 242 →

Illinois Route 203 is a north–south state road in southwestern Illinois. It runs from just south of I-55, I-70, and US 40 around Gateway International Raceway at Collinsville Road (former US 40) in Fairmont City, north to I-270 near Pontoon Beach. This is a distance of 9.51 miles (15.30 km).^[1] Illinois 203 is a former segment of U.S. Route 66 (Illinois).

Route description

Illinois 203 is a major north–south artery through the eastern metropolitan St. Louis area.

History

Illinois 203 replaced an older alignment of Illinois Route 3 in 1964. It originally ran to Hartford, but this was later trimmed back to I-270.^[2]

Major intersections

County	Location	mi[3]	km	Destinations	Notes
St. Clair	Fairmont City	0.0	0.0	Collinsville Road
		0.3	0.5	I-55 / I-70 (US 40) – Chicago, St. Louis
Madison	Granite City	5.0	8.0	IL 162 east (Edwardsville Road)
	Mitchell	9.5	15.3	I-270 – Effingham, St. Charles
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

Route map: Bing / Google

1. Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
2. Carlson, Rich (2005-04-15). "Illinois Highways Page: Routes 203 thru end]". Retrieved 2006-06-27.
3. Google (July 9, 2012). "Illinois Route 203" (Map). Google Maps. Google. Retrieved July 9, 2012.