Interstate 39

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.^[1]

Interstate 39
I-39 highlighted in red
Route information
Maintained by IDOT and WisDOT
Length	306.14 mi[1] (492.68 km)
NHS	Entire route
Major junctions
South end	I-55 / I-74 / US 51 in Normal, IL
Major intersections	I-80 in LaSalle, IL I-88 / IL 110 (CKC) in Rochelle, IL I-90 in Rockford, IL I-43 / WIS 81 in Beloit, WI I-94 / WIS 30 in Madison, WI* I-90 / I-94 / WIS 78 in Portage, WI
North end	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 ← IL 38 IL US 40 → ← WIS 38 WI WIS 39 →