 Illinois Route 23 | ||||
|---|---|---|---|---|
 IL 23 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 122.77 mi[1] (197.58 km) | |||
| Existed | November 5, 1918[2]–present | |||
| Major junctions | ||||
| South end |  IL 116 in Pontiac | |||
 I-55 in Pontiac  US 6 / IL 71 in Ottawa I-80 in Ottawa US 52 in Serena US 34 in Leland US 30 in Waterman
  I-90 Toll near Marengo US 20 in Marengo | ||||
| North end |  US 14 in Harvard | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Livingston, LaSalle, DeKalb, McHenry | |||
| Highway system | ||||
| ||||
Illinois Route 23 (IL 23) is a north–south state highway in northern Illinois. It runs from Illinois Route 116 in Pontiac north to U.S. Route 14 south of Harvard. This is a distance of 122.77 miles (197.58 km).[1]
Illinois 23 was established in 1918 as one of the original 46 SBI routes. The routing of Illinois 23 has not changed since its establishment.
- ^ a b Illinois Technology Transfer Center (2007). "T2 GIS Data". Retrieved November 8, 2007.
- ^ Carlson, Rick. Illinois Highways Page: Interstates in Illinois. Last known update March 15, 2006. Retrieved March 21, 2006.