Illinois Route 170
North-south state highway in Illinois, US
From Wikipedia, the free encyclopedia
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]
Route description
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.
History
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]
