Highway marker photo
Illinois 21
Illinois Highway Ends Logo Illinois 20   Illinois 22

Illinois State Route 21

Illinois 21 is known as Milwaukee Avenue and goes from Gurnee to the north side of Chicago in northern Chicagoland. The current route is somewhat similar to the original one, but it did extend to the Wisconsin line north of Antioch.
 
Illinois 21: Chicago (Illinois 43) < 29 miles > Gurnee (US 41)

Google Map of Illinois 21

 


Cities Served: Chicago, Glenview, Gurnee, Libertyville, Morton Grove, Niles, Vernon Hills, Wheeling
Counties Served: Cook, Lake
Highway Name(s): Milwaukee Avenue
Multiplexes: US 45, US 45
Related Links: » Illinois Route 21 from Wikipedia
  » Rich Carlson' Illinois Highway Page 21-40


  Northern Terminus: Gurnee   at US 41
      End Photographs
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Looking south from US 41
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Looking north to US 41
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A closeup of the end sign
Google Map   |
Tiger Map   |
USGS Aerial Imagery  

  Southern Terminus: Chicago   at Illinois 43
      End Photographs
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The BEGIN sign at Harlem Avenue
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Looking southeast at the END sign at Harlem Avenue
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Looking southeast approaching the southern terminus
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Looking northwest at Harlem Ave. where Milwaukee Ave. becomes route 21
Google Map   |
Tiger Map   |
USGS Aerial Imagery  

  Multiplex Photographs:
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IL 21/US 45: Looking west on Lake-Cook Road
Illinois 20 Illinois 22
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