Interstate 90 in Wisconsin

This article is about the section of Interstate 90 in Wisconsin. For the entire length of the highway, see Interstate 90.

Interstate 90
Route information
Maintained by WisDOT
Length:	187.14 mi (301.17 km)
Major junctions
West end:	I-90 at Minnesota state line
	US 53 in La Crosse I-94 in Tomah I-39 in Portage US 51 in Madison US 151 in Madison US 12 / US 18 in Madison US 14 in Janesville I-43 in Beloit
East end:	I-39 / I-90 at Illinois state line
Highway system
Main route of the Interstate Highway System Main • Auxiliary • Business Wisconsin Highways Interstates • U.S. • State County • Bannered • Rustic ← WIS 89 WIS 91 →

In the U.S. state of Wisconsin, Interstate 90 runs east–west through the western, central and southern portions of the state. A total of 187 miles (301 km) of Interstate 90 lie in Wisconsin.

Route description

Interstate 90 entering Wisconsin near La Crosse

The route enters from Minnesota over the Mississippi River 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. The two interstates remain joined for the next 91.76 miles (147.67 km) to Madison. The route collects Interstate 39, 63 miles (101 km) southeast of Tomah (near Portage). This concurrency (30 miles) is the longest three-route concurrency of the Interstate Highway system and only one of two in existence. I-39 continues along I-90 for the remaining 78 miles (126 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	#	Destinations	Notes
La Crosse	La Crosse		2	CTH-B – French Island
			3	US 53 south / WIS 35 – La Crosse, Onalaska	Signed as exits 3A and 3B eastbound West end of US 53 overlap
			4	US 53 north / WIS 157 – La Crosse, Onalaska	East end of US 53 overlap
			5	WIS 16 – Onalaska, West Salem
			12	CTH-C – West Salem
			15	WIS 162 – Bangor, Coon Valley	Eastbound: Rockland use Exit 15
Monroe	Sparta		25	WIS 27 – Sparta, Melvina	Westbound: Rockland use Exit 25
			28	WIS 16 – Sparta
			41	WIS 131 – Tomah, Wilton
	Tomah		43	US 12 / WIS 16 – Tomah
			45	I-94 west – Eau Claire, St. Paul	West end of I-94 overlap
			48	CTH-PP – Oakdale
Juneau			55	CTH-C – Camp Douglas, Volk Field
	New Lisbon		61	WIS 80 – New Lisbon
	Mauston		69	WIS 82 – Mauston, Oxford
			79	CTH-HH – Lyndon Station
			85	US 12 / WIS 16 – Wisconsin Dells
Sauk	Wisconsin Dells		87	WIS 13 – Wisconsin Dells
	Lake Delton		89	WIS 23 – Lake Delton, Reedsburg
			92	US 12 – Baraboo, Mirror Lake State Park
Columbia	Portage		106	WIS 33 – Portage
			108A	WIS 78 – Merrimac
			108B	I-39 north – Portage, Wausau	West end of I-39 overlap
			115	CTH-CS – Poynette, Lake Wisconsin
	Lodi		119	WIS 60 – Lodi, Arlington
Dane			126	CTH-V – Dane, De Forest
	Windsor		131	WIS 19 – Waunakee, Sun Prairie
			132	US 51 – Madison, De Forest
	Madison		135A	US 151 south – Madison
			135B	US 151 north – Sun Prairie
			135C	High Crossing Boulevard	Westbound exit and eastbound entrance
			138A	I-94 east – Milwaukee	East end of I-94 overlap
			138B	WIS 30 west – Madison
			142	US 12 / US 18 – Madison, Cambridge	Signed as exits 142A (west) and 142B (east)
			147	CTH-N – Stoughton, Cottage Grove
			156	US 51 north – Stoughton, Deerfield	West end of US 51 overlap
			160	US 51 south / WIS 73 / WIS 106 – Edgerton	East end of US 51 overlap
Rock			163	WIS 59 – Edgerton, Milton
	Janesville		171A	WIS 26 north – Milton
			171B	US 14 west / WIS 26 south – Janesville
			171C	US 14 east
			174A	Racine Street (US 14 Bus. west)
			174B	WIS 11 east (US 14 Bus. east) – Delavan	West end of WIS 11 overlap
			177	WIS 11 west – Janesville, Avalon	East end of WIS 11 overlap
			183	CTH-S (Shopiere Road)
	Beloit		185A	WIS 81 west – Beloit
			185B	I-43 north – Milwaukee

References

Interstate 90
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