![]() 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 | ![]() ![]() ![]() | ||||||
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North end | ![]() ![]() | ||||||
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 | |||||||
Illinois State Highway System
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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]