 Illinois Route 170 | ||||
|---|---|---|---|---|
 IL 170 highlighted in red | ||||
| Route information | ||||
| Maintained byIDOT | ||||
| Length | 25.00 mi[1] (40.23 km) | |||
| Existed | 1946[2]–present | |||
| Major junctions | ||||
| South end |  IL 23 inCornell | |||
| North end |  US 6 inSeneca | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Livingston,LaSalle | |||
| Highway system | ||||
| ||||
Illinois Route 170 is a north–south state road in north-centralIllinois. It runs fromIllinois Route 23 well north ofPontiac toU.S. Route 6 inSeneca. This is a distance of 25.00 miles (40.23 km).[1]
Illinois 170 is a rural, two-lane surface road for its entire length. The road crossesIllinois River via a four-spantruss bridge.[3] As of May 5, 2006, theIllinois Department of Transportation is looking to replace the 74-year-old bridge.[4] The old bridge was imploded on November 18, 2010.
SBI Route 160 originally ran fromRed Bud toSparta; this becameIllinois Route 154 in 1937. In 1946, it replacedIllinois Route 186 (previously Illinois Route 70A) from Seneca south toIllinois Route 17 nearBudd.[5][6][7] In 1995 Illinois 170 was extended further south to Illinois 23.[2]
| County | Location | mi[8] | km | Destinations | Notes |
|---|---|---|---|---|---|
| Livingston | | 0.0 | 0.0 | IL 23 | |
| | 7.2 | 11.6 |  IL 17 | ||
| LaSalle | Seneca | 25.00 | 40.23 | US 6 (Jackson St) | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
