Route information | ||||
---|---|---|---|---|
Maintained by IDOT | ||||
Length | 25.00 mi[1] (40.23 km) | |||
Existed | 1946[2]–present | |||
Major junctions | ||||
South end | IL 23 in Cornell | |||
North end | US 6 in Seneca | |||
Location | ||||
Country | United States | |||
State | Illinois | |||
Counties | Livingston, LaSalle | |||
Highway system | ||||
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Illinois Route 170 is a north–south state road in north-central Illinois. It runs from Illinois Route 23 well north of Pontiac to U.S. Route 6 in Seneca. 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 crosses Illinois River via a four-span truss bridge.[3] As of May 5, 2006, the Illinois 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 from Red Bud to Sparta; this became Illinois Route 154 in 1937. In 1946, it replaced Illinois Route 186 (previously Illinois Route 70A) from Seneca south to Illinois Route 17 near Budd.[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 |