 Illinois Route 171 | ||||
|---|---|---|---|---|
 IL 171 highlighted in red | ||||
| Route information | ||||
| Maintained by IDOT and CDOT | ||||
| Length | 38.61 mi[1] (62.14 km) | |||
| Existed | 1946[2]–present | |||
| Major junctions | ||||
| South end |  US 6 in Joliet | |||
  I-355 Toll near Lockport   US 12 / US 20 / US 45 in Willow Springs I-294 Toll in Justice I-55 in Summit US 34 in Lyons   I-290 / IL 110 (CKC) in Maywood I-90 in Chicago | ||||
| North end |  IL 72 in Chicago | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Will, Cook | |||
| Highway system | ||||
| ||||
Illinois Route 171 (IL 171) is a 38.61-mile-long (62.14 km) north–south state highway in northeastern Illinois. It runs from U.S. Route 6 (US 6) in Joliet north to Illinois Route 72 at the Chicago–Park Ridge border.[1] The section of IL 171 on Archer Avenue from Joliet to Summit is historically significant, originating as a Native American trail, and later serving for a time as part of the first numbered highway between St. Louis and Chicago.
The current Illinois Route 171 incorporates part or all of previous IL 4, IL 4A, and IL 213.
- ^ a b Illinois Technology Transfer Center (2007). "T2 GIS Data". Illinois Department of Transportation. Retrieved January 3, 2009.
- ^ Cite error: The named reference
1946mapwas invoked but never defined (see the help page).