Illinois highway fact sheet.
Illinois highway statistics sheet
[Springfield, Ill.] : Illinois Dept. of Transportation, Office of Planning and Programming, -
Transportation / Illinois /
Roads > Roads / Illinois > Roads / Illinois / Statistics.
Title from caption.
Prepared in cooperation with the U.S. Dept. of Transportation, Federal Highway Administration.
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|Limited (search only)1983-91||University of Illinois at Urbana-Champaign|