Illinois Route 203 (IL 203) is a 9.51-mile-long (15.30 km) north–south state highway in the southwestern part of the U.S. state of Illinois. It travels from just south of I-55/I-70/US 40 around Gateway International Raceway at Collinsville Road (former US 40) in Fairmont City, north to I-270 near Pontoon Beach. IL 203 is a former segment of US 66.

Illinois Route 203 marker
Illinois Route 203
Nameoki Road
Map
IL 203 highlighted in red
Route information
Maintained by IDOT
Length9.51 mi[1] (15.30 km)
Existed1964[2]–present
Major junctions
South endCollinsville Road in Fairmont City
Major intersections I-55 / I-70 / US 40 in Fairmont City
North end I-270 in Granite City
Location
CountryUnited States
StateIllinois
CountiesSt. Clair, Madison
Highway system
IL 192 IL 242

Route description

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Exit for IL 203 off of I-70 and I-55

IL 203 is a major north–south artery through the eastern part of the Greater St. Louis metropolitan area.

History

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By 1937, US 67 was signed on part of present-day IL 203.[3] From 1938 to 1955, US 66 City was signed on this particular route as well.[4][5] By 1939, US 67 Alternate was signed after US 67 was rerouted away from East St. Louis.[6] Up until 1964, parts of IL 3, IL 162, and US 67 Alternate utilized present-day IL 203.[7] In 1964, IL 203 was signed; replacing these routes. It originally traveled to Hartford, but this was later trimmed back to I-270 as of 1989.[2][8]

Major intersections

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CountyLocationmi[9]kmDestinationsNotes
St. ClairFairmont City0.00.0Collinsville RoadSouthern terminus
0.30.48   I-55 / I-70 / US 40 – Chicago, St. LouisExit 4 (I-70/I-55)
MadisonGranite City5.08.0 
 
IL 162 east (Edwardsville Road)
Western terminus of IL 162
Mitchell9.515.3   I-270 / Historic US 66 – Effingham, St. CharlesNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

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References

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  1. ^ Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
  2. ^ a b Carlson, Rich (2005-04-15). "Illinois Highways Page: Routes 203 thru end]". Retrieved 2006-06-27.
  3. ^ "1937 Missouri Highway Map". Retrieved 15 June 2020.
  4. ^ "1938 Missouri Highway Map". Retrieved 15 June 2020.
  5. ^ Illinois Division of Highways (1955). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways – via Illinois Digital Archives.
  6. ^ "1939 Missouri Highway Map". Retrieved 15 June 2020.
  7. ^ Illinois Division of Highways; H.M. Gousha (1963). Illinois Official Highway Map (Map). [1:790,00]. Springfield: Illinois Division of Highways – via Illinois Digital Archives.
  8. ^ Illinois Department of Transportation (1989). Illinois Highway Map (Map) (1989–1990 ed.). [1:762,500]. Springfield: Illinois Department of Transportation – via Illinois Digital Archives.
  9. ^ "Illinois Route 203" (Map). Google Maps. Retrieved July 9, 2012.
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