Illinois Route 78

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Illinois Route 78 marker

Illinois Route 78
Route information
Maintained by IDOT
Length: 215.51 mi[2] (346.83 km)
Existed: 1924[1] – present
Major junctions
South end: I-55 / IL 104 in Jacksonville[3]
North end: WIS 78 in Warren
Counties: Morgan, Cass, Mason, Fulton, Knox, Peoria, Stark, Henry, Whiteside, Carroll, Jo Daviess
Highway system
IL 76 I-80

Illinois Route 78 is a major north–south highway in western Illinois. It runs from Illinois Route 104 northwest of Jacksonville north to Highway 78 at the Wisconsin state line north of Warren. This is a distance of 215.51 miles (346.83 km).[2]

Points of interest[edit]

IL 78 north of Laura in Peoria County

The following historic and geographic sites can be enjoyed on Illinois Route 78, southing from south to north:

Major intersections[edit]


  1. ^ Carlson, Rich. Illinois Highways Page: Routes 61 thru 80. Last updated April 15, 2005. Retrieved April 14, 2006.
  2. ^ a b Illinois Technology Transfer Center (2006). "T2 GIS Data". Retrieved 2007-11-08. 
  3. ^ Unknown. New U.S. 67 Gallery. Last updated June 14, 2001. Retrieved April 14, 2006.

External links[edit]

Route map: Bing / Google

KML is from Wikidata