 Illinois Route 123 | ||||
|---|---|---|---|---|
 IL 123 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT | ||||
| Length | 33.72 mi[1] (54.27 km) | |||
| Existed | 1924[2]–present | |||
| Major junctions | ||||
| West end |  IL 125 in Pleasant Plains | |||
 I-55 in Williamsville | ||||
| East end |  Historic US 66 in Williamsville | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Sangamon, Menard | |||
| Highway system | ||||
| ||||
Illinois Route 123 (IL-123) is an east–west state highway in central Illinois, USA. 33.72 miles (54.27 km) long,[1] it stretches from Historic Route 66 at Williamsville[3] to Illinois Route 125 near Pleasant Plains.
- ^ a b Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
- ^ Carlson, Rich. Illinois Highways Page: Routes 121 thru 140. Last updated March 15, 2005. Retrieved May 9, 2006.
- ^ "Street view of the eastern terminus of IL 123" (Map). Google Maps. Retrieved October 3, 2020.