In the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

, Interstate 90 runs east–west through the western, central and southern portions of the state. A total of 187 miles (300.9 km) of Interstate 90 lie in Wisconsin.

Route description

The route enters from Minnesota

Minnesota

Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

 over the Mississippi River

I-90 Mississippi River Bridge

The I-90 Mississippi River Bridge is a plate girder bridge that connects La Crosse, Wisconsin to rural Winona County, Minnesota. It is an automobile bridge that traverses the Mississippi River, and is part of the Interstate 90 route. The railing consists of solid concrete; the steel structure is...

 just northwest of La Crosse. The route passes north of La Crosse and south of Onalaska as it heads towards Tomah. Once there, it joins Interstate 94

Interstate 94

Interstate 94 is the northernmost east–west Interstate Highway, connecting the Great Lakes and Intermountain regions of the United States. I-94's western terminus is in Billings, Montana at a junction with Interstate 90; its eastern terminus is the U.S...

. The two interstates remain joined for the next 91.76 miles (147.7 km) to Madison. The route collects Interstate 39

Interstate 39

Interstate 39 is a highway in the midwestern United States. I-39 runs from Normal, Illinois at Interstate 55 to Highway 29 in Rothschild, Wisconsin, approximately six miles south of Wausau. I-39 was designed to replace US Highway 51, which in the early 1980s was one of the busiest two-lane...

, 63 miles (101.4 km) southeast of Tomah (near Portage). This concurrency (30 miles) is the longest three-route concurrency of the Interstate Highway system

Interstate Highway System

The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...

 and only one of two in existence. I-39 continues along I-90 for the remaining 78 miles (125.5 km) in Wisconsin.

I-94 breaks away eastward toward Milwaukee at what is commonly known as the Badger Interchange, where the three interstates meet with WIS 30. The remaining routes continue south to Janesville and Beloit before exiting the state.

Exit list

County	Location	Mile	# Exit number An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit, as well as a sign in the gore....	Destinations	Notes
La Crosse	La Crosse La Crosse, Wisconsin La Crosse is a city in and the county seat of La Crosse County, Wisconsin, United States. The city lies alongside the Mississippi River.The 2011 Census Bureau estimates the city had a population of 52,485...		2
			3		Signed as exits 3A and 3B eastbound West end of US 53 overlap
			4		East end of US 53 overlap
			5
			12
			15		Eastbound: Rockland use Exit 15
Monroe Monroe County, Wisconsin Monroe County is a county in the U.S. state of Wisconsin. As of 2000, the population was 40,899. Its county seat is Sparta.-Geography:According to the U.S...	Sparta Sparta, Wisconsin Sparta is a city in and the county seat of Monroe County, Wisconsin, United States, along the La Crosse River. The population was 9,522 at the 2010 census.-Notable people:*William Hawley Atwell, U.S. District Court Judge in Texas*Larry Baumel, NASCAR...		25		Westbound: Rockland use Exit 25
			28
			41
	Tomah Tomah, Wisconsin Tomah is a city in Monroe County, Wisconsin, United States. As of the 2010 census, it had a population of 9,093. The city is located partially within the Town of Tomah.-Education:...		43
			45	, St. Paul	West end of I-94 overlap
			48
Juneau Juneau County, Wisconsin Juneau County is a county located in the U.S. state of Wisconsin. As of the 2000 census, the population was 24,316. Its county seat is Mauston. It should not, however, be confused with the city of Juneau, Wisconsin, to which it has no connection.-Geography:...			55	, Volk Field Volk Field Air National Guard Base Volk Field Air National Guard Base is a military airport located just outside the village of Camp Douglas, in Juneau County, Wisconsin, United States...
	New Lisbon New Lisbon, Wisconsin New Lisbon is a city in Juneau County, Wisconsin, United States. The population was 1,436 at the 2000 census.-Geography:New Lisbon is located at ....		61
	Mauston Mauston, Wisconsin Mauston is a city in and the county seat of Juneau County, Wisconsin, United States. The population is 4,411 according to the 2010 census.-History:...		69
			79
			85
Sauk Sauk County, Wisconsin Sauk County is a county in the U.S. state of Wisconsin. As of 2000, the population was 55,225. Its county seat and largest city is Baraboo. Sauk County is included in the Baraboo Micropolitan Statistical Area and in the Madison Combined Statistical Area....	Wisconsin Dells Wisconsin Dells, Wisconsin Wisconsin Dells is a city in south-central Wisconsin, with a population of 2,418 as of the 2000 census. It straddles four counties: Adams, Columbia, Juneau, and Sauk. The city takes its name from the dells of the Wisconsin River, a scenic, glacially formed gorge that features striking sandstone...		87
	Lake Delton Lake Delton, Wisconsin Lake Delton is a village located on the Wisconsin River in Sauk County, Wisconsin, United States. As of the 2000 census, the village had a total population of 1,982, but in 2009, it had an estimated population of 3,081 which is a 55.4% increase. It also makes it the largest community in the Dells...		89
			92
Columbia Columbia County, Wisconsin -Unincorporated communities:*Anacker*Belle Fountain*Durwards Glen*East Friesland*Harmony Grove*Ingle*Keyeser*Lake Wisconsin*Leeds*Lowville*Marcellon*North Leeds*Okee*Otsego-External links:***...	Portage Portage, Wisconsin Portage is a city in and the county seat of Columbia County, Wisconsin, United States. The population was 10,662 at the 2010 census making it the largest city in Columbia County...		106
			108A
			108B		West end of I-39 overlap
			115
	Lodi Lodi, Wisconsin Lodi is a city in Columbia County, Wisconsin, United States. As of the census of 2000, the population was 2,882. The city's estimated 2005 population was 2,929...		119
Dane Dane County, Wisconsin As of the census of 2000, there were 426,526 people, 173,484 households, and 100,794 families residing in the county. The population density was 355 people per square mile . There were 180,398 housing units at an average density of 150 per square mile...			126
	Windsor Windsor, Wisconsin Windsor is a town in Dane County, Wisconsin, United States. The population was 5,286 at the 2000 census. The census-designated place of Windsor is located in the town. The unincorporated communities of Lake Windsor, Morrisonville, and Token Creek are also located in the town. A portion of the town...		131
			132
	Madison Madison, Wisconsin Madison is the capital of the U.S. state of Wisconsin and the county seat of Dane County. It is also home to the University of Wisconsin–Madison....		135A
			135B
			135C	High Crossing Boulevard	Westbound exit and eastbound entrance
			138A		East end of I-94 overlap
			138B
			142		Signed as exits 142A (west) and 142B (east)
			147
			156		West end of US 51 overlap
			160		East end of US 51 overlap
Rock Rock County, Wisconsin -Unincorporated communities:-Further reading:* . Chicago: Western Historical Company, 1879.* Brown, William F. , Chicago: Cooper, 1908.* Brown, William F. , Chicago: Cooper, 1908....			163
	Janesville Janesville, Wisconsin Janesville is a city in southern Wisconsin, United States. It is the county seat of Rock County and the principal municipality of the Janesville, Wisconsin Metropolitan Statistical Area. As of the 2010 census, the city had a population of 62,998.-History:...		171A
			171B
			171C
			174A	Racine Street (US 14 Bus. west)
			174B		West end of WIS 11 overlap
			177		East end of WIS 11 overlap
			183
	Beloit Beloit, Wisconsin Beloit is a city in Rock County, Wisconsin, United States. As of the 2010 census, Beloit had a population of 36,966. The greater Beloit area is home to more than 91,000 residents.-Claim to fame:...		185A
			185B