Interstate 39

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Interstate 39 Primary Interstate Length: 349 mi (562 km) Major cities/towns: Bloomington, IL Rockford, IL Madison, WI Established: Direction: North-South Southern Terminus: Bloomington, IL at Interstate 55 Northern Terminus: South of Wausau, WI at Wisconsin State Highway 29 States traversed: Illinois Wisconsin INTERSTATE JUNCTIONS JUNCTION EXIT # Legend   deleted (no longer in system)   unconstructed   closed   crossing with no access   begin/end concurrency, bold route is carried through   a bold route on white background indicates termini. BROWSE STATE HWYS Prev Next

Interstate 39 (abbreviated I-39) is an interstate highway in the midwestern United States. It runs from Normal, Illinois at Interstate 55 to Wisconsin State Highway 29 in Rothschild, Wisconsin, approximately six miles south of Wausau, Wisconsin.

Interstate 39 is primarily used as a long-distance bypass for commericial vehicles around Chicago, Illinois. Industries in Minneapolis, Minnesota, Eau Claire, Wisconsin and other northern-tier cities may exchange goods with more southerly cities such as Cincinnati, Ohio, Louisville, Kentucky and Indianapolis, Indiana (via Interstate 74) without routing traffic through congestion-plagued Chicago.

Contents 1 Length 2 Primary cities along the route 3 Intersections with other Interstates 4 Spur routes 5 Notes

Length

Miles	km	state
139	224	Illinois
210	338	Wisconsin
349	562	Total

Primary cities along the route

• Normal, Illinois
• Rockford, Illinois
• Beloit, Wisconsin
• Janesville, Wisconsin
• Madison, Wisconsin
• Portage, Wisconsin
• Stevens Point, Wisconsin
• Wausau, Wisconsin

Intersections with other Interstates

• Interstate 55 in Normal, Illinois
• Interstate 80 in La Salle, Illinois
• Interstate 88 in Rochelle, Illinois
• Interstate 90 in Rockford, Illinois. They stay joined until Portage, Wisconsin
• Interstate 43 in Beloit, Wisconsin
• Interstate 94 in Madison, Wisconsin. They stay joined for 30 miles.

Spur routes

None

Notes

• Future plans call for Interstate 39 to be extended north from Wausau to Merrill, Wisconsin along the U.S. Highway 51 freeway, which is Interstate standard, but it was not signed as Interstate as of May 2005. This is most likely due to a long-term improvement project on US-51 which will not be completed until 2010.

• Despite its Interstate status many residents of central Wisconsin still refer to I-39 as Highway 51 and in Stevens Point and Wausau one can find numerous "TO 51" road signs but very few "TO 39" signs.

• I-39 in Plover, Wisconsin separates the Good and Evil Watertowers.

• The southern terminus of I-39 in Normal, Illinois is very close (about two miles) to Interstate 74.

• I-39 is the owner of the Illinois version of the Abraham Lincoln Memorial Bridge, which spans the Illinois River in north central Illinois.

• For all but one of the 139 miles (224 km) that Interstate 39 is in Illinois, it is multiplexed with U.S. Highway 51.

• The stretch from Portage, Wisconsin to Madison, Wisconsin, where I-39 runs concurrently with I-90 and I-94, is the longest such stretch of three interstates in the country.

• At one point, Interstate 39 was a studied alternative for the unbuilt Peoria-to-Chicago Highway.

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