Illinois Route 18
Illinois Route 18 (IL 18) is a rural east–west state road in central Illinois. It runs east from the town of Henry at Illinois Route 29 to the town of Blackstone at Illinois Route 17. This is a distance of 39.01 miles (62.78 km).[1]
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IL 18 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 39.01 mi[1] (62.78 km) | |||
| Existed | 1939[2]–present | |||
| Major junctions | ||||
| West end |  IL 29 in Henry | |||
  I-39 / US 51 in Lostant | ||||
| East end |  IL 17 in Blackstone | |||
| Location | ||||
| Counties | Stark, Marshall, Putnam, LaSalle, Livingston | |||
| Highway system | ||||
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Route description
Illinois 18 crosses the Illinois River at Henry, and is the first river crossing south of Interstate 180. The terrain is generally flat outside of the Illinois River Valley area. In Streator, Illinois 18 westbound becomes Main Street. Eastbound, it becomes Bridge Street.
History
From 1918 through 1935, SBI Route 18 ran from Chicago to Princeton using what used to be part of U.S. Route 32.[3] Since then, IL 18 as well as part of US 32 were superseded by US 34.[4] In 1939, it was applied to what was then SBI Routes 89B and 89C as well as part of SBI Route 17.[5][6] The next year, the route was completed and Illinois 17 moved to a new highway south of Streator.[7][2]
Major intersections
| County | Location | mi[8] | km | Destinations | Notes |
|---|---|---|---|---|---|
| Stark | Henry | 0.0 | 0.0 | IL 29 (University Street) | |
| Illinois River | 1.2 | 1.9 | Henry Bridge | ||
| Marshall | | 2.1 | 3.4 |  IL 26 south | West end of IL 26 overlap |
| Putnam | | 2.8 | 4.5 | IL 26 north | East end of IL 26 overlap |
| Magnolia | 9.9 | 15.9 |  IL 89 | ||
| La Salle | | 16.5 | 26.6 | I-39 / US 51 – Bloomington-Normal, Rockford | I-39 exit 41 |
| | 17.0 | 27.4 |  IL 251 | ||
| Streator | 29.1 | 46.8 |  IL 23 (Bloomington Street, Park Street) | ||
| Livingston | | 39.01 | 62.78 |  IL 17 to I-55 | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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References
- Illinois Technology Transfer Center (2007). "T2 GIS Data". Retrieved November 8, 2007.
- Carlson, Rick. Illinois Highways Page: Routes 1 thru 20. Last updated March 15, 2005. Retrieved March 31, 2006.
- Illinois Secretary of State; Rand McNally (1934). Official Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. OCLC 183709045. Retrieved November 3, 2020 – via Illinois Digital Archives.
- Illinois Secretary of State; H.M. Gousha (1935). Official Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. Retrieved November 3, 2020 – via Illinois Digital Archives.
- Illinois Secretary of State; Rand McNally (1936). Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. Retrieved November 3, 2020 – via Illinois Digital Archives.
- Illinois Secretary of State; Rand McNally (1939). Illinois Road Map (Map) (1939–1940 ed.). c. 1:918,720. Springfield: Illinois Secretary of State. Retrieved November 3, 2020 – via Illinois Digital Archives.
- Illinois Secretary of State; Rand McNally (1940). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. Retrieved November 3, 2020 – via Illinois Digital Archives.
- Google Maps,