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Illinois Route 170

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(Redirected from Illinois Route 70A) North-south state highway in Illinois, US
Illinois Route 170 markerIllinois Route 170
IL 170 highlighted in red
Route information
Maintained by IDOT
Length25.00 mi (40.23 km)
Existed1946–present
Major junctions
South end IL 23 in Cornell
North end US 6 in Seneca
Location
CountryUnited States
StateIllinois
CountiesLivingston, LaSalle
Highway system
← IL 169→ IL 171

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).

Route description

A view of Illinois Route 170 in Seneca, Illinois looking north

Illinois 170 is a rural, two-lane surface road for its entire length. The road crosses Illinois River via a four-span truss bridge. As of May 5, 2006, the Illinois Department of Transportation is looking to replace the 74-year-old bridge. 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. In 1995 Illinois 170 was extended further south to Illinois 23.

Major Intersections

CountyLocationmikmDestinationsNotes
Livingston​0.00.0 IL 23
​7.211.6 IL 17
LaSalleSeneca25.0040.23 US 6 (Jackson St)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

KML file (edit • help) Template:Attached KML/Illinois Route 170KML is not from Wikidata
  1. ^ Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08.
  2. ^ Carlson, Rich (2005-04-15). "Illinois Highways Page: Routes 161 through 180". Retrieved 2006-08-14.
  3. Baughn, James; et al. (2006-01-09). "Historic Bridges of the U.S. – Seneca Bridge, LaSalle County, Illinois". Retrieved 2006-08-15.
  4. Illinois Department of Transportation (2006-05-05). "Open House Public Hearing Meeting: For Removal And Replacement Of The Illinois 170 Bridge Over The Illinois River In Seneca". Retrieved 2006-08-15.
  5. Illinois Secretary of State; Rand McNally (1936). Road Map Illinois (Map). . Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  6. Illinois Secretary of State; Rand McNally (1939). Illinois Road Map (Map) (1939–1940 ed.). c. 1:918,720. Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  7. Illinois Secretary of State; Rand McNally (1946). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State – via Illinois Digital Archives.
  8. "Overview Map of IL 170" (Map). Google Maps. Retrieved March 9, 2017.
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