Interstate 39

Interstate 39 marker Interstate 39
I-39 highlighted in red
Route information
Maintained by IDOT and WisDOT
Length	306.14 mi (492.68 km)
NHS	Entire route
Major junctions
South end	File:I-55.svgFile:I-74.svgFile:US 51.svg I-55 / I-74 / US 51 in Normal, IL
Major intersections	File:I-80.svg I-80 in LaSalle, IL File:Toll plate yellow.svg File:I-88.svgFile:CKC plate.svg File:Illinois 110.svg I-88 / IL 110 (CKC) in Rochelle, IL File:Toll plate yellow.svg File:I-90.svg I-90 in Rockford, IL File:I-43.svgFile:WIS 81.svg I-43 / WIS 81 in Beloit, WI File:I-94.svgFile:WIS 30.svg I-94 / WIS 30 in Madison, WI* File:I-90.svgFile:I-94.svgFile:WIS 78.svg I-90 / I-94 / WIS 78 in Portage, WI
North end	File:US 51 (WI).svgFile:WIS 29.svg US 51 / WIS 29 in Rothschild, WI
Location
Country	United States
States	Illinois, Wisconsin
Counties	IL: McLean, Woodford, Marshall, LaSalle, Lee, Ogle, Winnebago WI: Rock, Dane, Columbia, Marquette, Waushara, Portage, Marathon
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future
Illinois State Highway System Interstate U.S. State Tollways Wisconsin State Trunk Highway System Interstate U.S. State Scenic Rustic ← File:Illinois 38.svg IL 38 IL US 40 File:US 40.svg → ← File:WIS 38.svg WIS 38 WI WIS 39 File:WIS 39.svg →

Interstate 39 is an Interstate Highway in the United States. It goes from Normal, Illinois north to Rothschild, Wisconsin. The route is 306.14 miles (492.68 km) long.