Illinois Route 73

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Illinois Route 73

Illinois Route 73 highlighted in red
Route information
Maintained by IDOT
Length29.32 mi[1] (47.19 km)
Major junctions
South end US 52 / IL 64 in Lanark
Major intersections US 20 in Lena
North endWIS County M.svg CTH M in Winslow
CountryUnited States
CountiesCarroll, Stephenson
Highway system
IL 72 I-74

Illinois Route 73 is a north–south state highway in northwest Illinois. It runs from the U.S. Route 52/Illinois Route 64 concurrency south of Lanark north to the Wisconsin border north of Winslow. This is a distance of 29.32 miles (47.19 km).[1]

Route description

Illinois 73 is a two-lane surface road for its entire length. At its northern terminus, Illinois 73 becomes County Highway M in Green County, Wisconsin. This is the only state highway that does not either continue as another state highway, or end at a ferry crossing (current or former).[2]


SBI Route 73 existed from Illinois Route 72 north of Lanark to Winslow. Around 1982, it replaced Illinois 72 from north of Lanark south to U.S. Route 52.[2]

Major intersections

CarrollLanark0.000.00 US 52 / IL 64 – Mount Carroll, BrookvilleSouthern terminus of IL 73
4.26.8 IL 72 – ShannonWestern terminus of IL 72
StephensonLena18.129.1 US 20 – Stockton, Freeport
Winslow29.3247.19 CTH-M – MartintownContinuation into Wisconsin
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b Illinois Technology Transfer Center (2007). "T2 GIS Data". Retrieved 2007-11-08.
  2. ^ a b c Carlson, Rich. Illinois Highways Page: Routes 61 through 80. Last updated March 15, 2005. Retrieved April 2, 2006.
  3. ^ Google (February 22, 2017). "Overview Map of IL 73" (Map). Google Maps. Google. Retrieved February 22, 2017.

External links