Illinois Route 15

Illinois Route 15 (IL 15) is a 149.64-mile-long (240.82 km) eastwest highway with its western terminus at Illinois Route 3, U.S. Route 40, I-55, and I-64, and its eastern terminus at Wabash River at the Illinois/Indiana Border where it meets State Road 64.[1]

Illinois Route 15
IL 15 highlighted in red
Route information
Maintained by IDOT
Length149.64 mi[1] (240.82 km)
ExistedNovember 5, 1918[2]–present
Major junctions
West end I-55 / I-64 / US 40 / IL 3 in East St. Louis
  I-255 / US 50 in East St. Louis
US 51 in Ashley
I-57 / I-64 in Mt. Vernon
US 45 in Fairfield
East end SR 64 in Mt. Carmel
CountiesSt. Clair, Washington, Jefferson, Wayne, Edwards, Wabash
Highway system
IL 14IL 16


West of Mt. Vernon, IL 15 was part of US 460. Until the 1960s, IL 15 went on the IL 160 corridor from Addieville to Okawville, then west on the present IL 177 corridor to Belleville. The section from Nashville to St. Libory was once IL 110, but this was back in the 1940s before US 460 was signed.[1]

The current route was determined in 1967. US 460 was truncated in 1974.[2]

Major intersections

St. ClairEast St. Louis0.00.0 I-55 south / I-64 west (US 40 west / IL 3 south) / Tudor Avenue St. Louis, Cahokia
Historic National Road west (Riverpark Drive) Eads Bridgewest end of National Road overlap
Historic National Road east (10th Street)east end of National Road overlap
Alorton3.45.5 IL 163 south Alorton, Centreville, MillstadtNorthern terminus of IL 163
4.26.8 I-255 / US 50 Memphis, ChicagoI-255 exit 17
AlortonCentreville line5.69.0 IL 157 (Bluff Road) Cahokiainterchange
Belleville7.712.4 IL 13 Belleville, Centrevilleinterchange; no access from IL 15 east to IL 13 west or IL 13 east to IL 15 west
Frank Scott Parkway Westinterchange
12.119.5 IL 158 (Centerville Avenue) Millstadtinterchange
13.221.2 IL 159 (Illinois Street) Red Budinterchange
14.623.5 IL 13 west Bellevilleinterchange; western end of IL 13 concurrency; westbound exit and eastbound entrance
Freeburg21.033.8 IL 13 east PinckneyvilleEastern end of IL 13 concurrency
Fayetteville28.045.1 IL 4 north Mascoutah, LebanonWestern end of IL 4 concurrency
St. Libory32.652.5 IL 4 south MarissaEastern end of IL 4 concurrency
WashingtonJohannisburg Township38.762.3 IL 153 south CoultervilleNorthern terminus of IL 153
Plum Hill Township45.573.2 IL 160 north AddievilleSouthern terminus of IL 160
Nashville51.582.9 IL 127 (Mill Street) Carlyle, Pinckneyville, Washington County State Lake
Ashley Township60.196.7 US 51 south CarbondaleWestern end of US 51 concurrency
62.9101.2 US 51 north CentraliaEastern end of US 51 concurrency
JeffersonMt. Vernon75.7121.8 I-57 / I-64 Effingham, East St. Louis, Cairo, EvansvilleI-57 exit 95
78.3126.0 IL 37 (10th Street) Salem, Benton
WayneWayne City95.8154.2 IL 242 south McLeansboroNorthern terminus of IL 242
Fairfield107172 US 45 north FloraWestern end of US 45 concurrency
110180 US 45 south (1st Street) to I-64 EnfieldEastern end of US 45 concurrency
EdwardsAlbion126203 IL 130 south Grayvillewest end of IL 130 concurrency
127204 IL 130 north Olneyeast end of IL 130 concurrency
WabashMt. Carmel148238 IL 1 north Lawrencevillewest end of IL 1 concurrency
149240 IL 1 south (3rd Street) Grayvilleeast end of IL 1 concurrency
149.64240.82 SR 64 east PrincetonIndiana state line (Mount Carmel Bridge over the Wabash River)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. Illinois Technology Transfer Center (2007). "T2 GIS Data". Retrieved 2007-11-08.
  2. Carlson, Rich. Illinois Highways Page: Routes 1 thru 20. Last updated March 15, 2006. Retrieved April 2, 2006.
  3. Google Maps,

KML is from Wikidata
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.