Interstate 39 (I-39) is a highway in the Midwestern United States. I-39 runs from Normal, Illinois, at I-55 to State Trunk Highway 29 (WIS 29) in the town of Rib Mountain, Wisconsin, which is approximately six miles (9.7 km) south of Wausau.[2] I-39 was designed to replace U.S. Route 51 (US 51), which, in the early 1980s, was one of the busiest two-lane highways in the United States.[citation needed] I-39 was built in the 1980s and 1990s.
In Illinois, the route has a total length of 140.82 miles (226.63 km).[3] In Wisconsin, I-39 has a distance of 182 miles (293 km). From Rockford, Illinois, to Portage, Wisconsin, I-39 runs concurrently with I-90. In Wisconsin, I-94 joins the pair in Madison until Portage. At 29 miles (47 km) in length, this concurrency of three Interstates is the longest in the country. From Portage northward, US 51 is cosigned with the Interstate and has exit numbers based on its mileage.
^Starks, Edward (January 27, 2022). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved December 6, 2023.
^Google (February 15, 2008). "Overview Map of I-39" (Map). Google Maps. Google. Retrieved February 15, 2008.
^Illinois Technology Transfer Center (2006). "T2 GIS Data". Illinois Department of Transportation. Retrieved November 8, 2007.
Interstate39 (I-39) is a highway in the Midwestern United States. I-39 runs from Normal, Illinois, at I-55 to State Trunk Highway 29 (WIS 29) in the...
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state trunk highway system, prior to the commissioning of Interstate39 (I-39) in 1992. WIS 39 begins at the intersection of US Highway 18, less than a...
Illinois, and located next to the interchange between Interstate39/U.S. Route 51 and Interstate 90 near U.S. Route 20. Magic Waters, was built in 1984...
the Fox Cities with Stevens Point, Waupaca and Manitowoc, along with Interstate39 and Wausau. Television and radio stations in the area, usually originating...
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Canal, and local roads and railroads. It carries Interstate39 (I-39), a major north-south Interstate through central Illinois, and its U.S. Route counterpart...
U.S. Route 51 before Interstate39 was built in north central Illinois. It runs from U.S. 51 at the border with Wisconsin to I-39 and U.S. 51 south of...
controversial plan that would have linked downtown Rockford, Illinois to Interstate39. In the 1940s and 1950s, as the Northwest Tollway (now the Jane Addams...
is near Wausau on the west side of the Wisconsin River, just west of Interstate39 and just south of Highway 29. The nearby Wausau Downtown Airport at...
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Metamora. IL 26 and IL 89 are the main north–south roads between Interstate39 (I-39)/US 51 and IL 29. Starting at La Moille, IL 89 travels south and...
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Caltrans has also relinquished a portion of SR 39 in Buena Park from Stanton Avenue in Buena Park to Interstate 5 in 2013, as well as those segments within...
east–west in suburban Madison as a connector freeway between Interstate39, Interstate 90, and Interstate 94 at the Badger Interchange to US 151 east of Downtown...
Global Information
I-55 / US 51 in Normal, IL
US 51 / WIS 29 near Rothschild, WI
