Interstate 90 in Wisconsin

Interstate 90
Route information
Maintained by WisDOT
Length:	187.13 mi[1] (301.16 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 I-94 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
Location
Counties:	La Crosse, Monroe, Juneau, Sauk, Columbia, Dane, Rock
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Wisconsin State Trunk Highway System Interstate U.S. State Byways Rustic ← WIS 89 WIS 91 →

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

Route description

Interstate 90 entering Wisconsin near La Crosse

The highway enters from Minnesota over the Mississippi River just northwest of La Crosse. The freeway passes north of La Crosse and south of Onalaska as it heads towards Tomah. Once there, it joins I-94. The two Interstates run concurrently for the next 91.76 miles (147.67 km) to Madison. The highway collects Interstate 39, 63 miles (101 km) southeast of Tomah (near Portage). This concurrency of about 30 miles (48 km) is one of only two three-route concurrency of the Interstate Highway System existence, the other being in Milwaukee. 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	mi[1]	km	Exit	Destinations	Notes
Mississippi River		0.00	0.00		I-90 west	Continuation into Minnesota
La Crosse	Town of Campbell	1.96	3.15	2	CTH-B – French Island
	La Crosse	2.87	4.62	3	US 53 south / WIS 35 – La Crosse, Onalaska	Western end of US 53 overlap; signed as exits 3A and 3B eastbound
		4.43	7.13	4	US 53 north / WIS 157 – La Crosse, Onalaska	Eastern end of US 53 overlap
		5.74	9.24	5	WIS 16 – Onalaska, West Salem
	Town of Hamilton	11.78	18.96	12	CTH-C – West Salem
	Bangor	15.57	25.06	15	WIS 162 – Bangor, Coon Valley
Monroe	Sparta	24.91	40.09	25	WIS 27 – Sparta, Melvina
	Town of Angelo	28.18	45.35	28	WIS 16 – Sparta
	Town of Tomah	41.42	66.66	41	WIS 131 – Tomah, Wilton
	Tomah	43.32	69.72	43	US 12 / WIS 16 – Tomah
	Town of Oakdale	45.10	72.58	45	I-94 west – Eau Claire, St. Paul	Western end of I-94 overlap
		48.60	78.21	48	CTH-PP – Oakdale
Juneau	Camp Douglas	55.03	88.56	55	CTH-C – Camp Douglas, Volk Field
	New Lisbon	61.46	98.91	61	WIS 80 – New Lisbon
	Town of Lemonweir	69.02	111.08	69	WIS 82 – Mauston, Oxford
	Lyndon Station	78.97	127.09	79	CTH-HH – Lyndon Station
	Town of Lyndon	85.40	137.44	85	US 12 / WIS 16 – Wisconsin Dells
Sauk	Wisconsin Dells	87.22	140.37	87	WIS 13 – Wisconsin Dells
	Lake Delton	89.80	144.52	89	WIS 23 – Lake Delton, Reedsburg
	Town of Delton	93.13	149.88	92	US 12 – Baraboo, Lake Delton
Columbia	Town of Caledonia	105.73	170.16	106	WIS 33 – Portage, Baraboo
		108.16	174.07	108A	WIS 78 – Merrimac
		108.59	174.76	108B	I-39 north – Portage, Wausau	Western end of I-39 overlap
	Town of Dekorra	115.21	185.41	115	CTH-CS – Poynette, Lake Wisconsin
	Town of Arlington	119.20	191.83	119	WIS 60 – Lodi, Arlington
Dane	Town of Vienna	126.25	203.18	126	CTH-V – Dane, DeForest
	Community of Windsor	130.46	209.96	131	WIS 19 – Waunakee, Sun Prairie
	Town of Burke	131.98	212.40	132	US 51 – Madison, DeForest
	Madison	135.21	217.60	135A	US 151 south – Madison
		135.24	217.65	135B	US 151 north – Sun Prairie
	Town of Burke	135.45	217.99	135C	High Crossing Boulevard	Westbound exit and eastbound entrance
		137.24	220.87	138A	I-94 east – Milwaukee	Eastern end of I-94 overlap
	Madison	137.59	221.43	138B	WIS 30 west – Madison
	Town of Blooming Grove	141.43	227.61	142	US 12 / US 18 – Madison, Cambridge	Signed as exits 142A (west) and 142B (east)
	Town of Pleasant Springs	146.80	236.25	147	CTH-N – Stoughton, Cottage Grove
	Town of Christiana	155.90	250.90	156	US 51 north to CTH-A – Stoughton, Deerfield	Northern end of US 51 overlap
	Town of Albion	159.64	256.92	160	US 51 south / WIS 73 / WIS 106 – Edgerton	Souther end of US 51 overlap
Rock	Town of Fulton	162.57	261.63	163	WIS 59 – Edgerton, Milton
	Janesville	170.81	274.89	171A	WIS 26 north – Milton
		171.52	276.03	171B	US 14 west / WIS 26 south – Janesville
		171.57	276.12	171C	US 14 east
		174.71	281.17	175	WIS 11 (US 14 Bus.) – Delavan	Northern end of WIS 11 overlap
	Town of La Prairie	177.22	285.21	177	WIS 11 west – Janesville, Avalon	Southern end of WIS 11 overlap
	Town of Turtle	182.41	293.56	183	CTH-S (Shopiere Road)
		184.70	297.25	185A	WIS 81 west – Beloit
		184.68	297.21	185B	I-43 north – Milwaukee
		187.13	301.16		I-39 south / I-90 east – Rockford	Continuation into Illinois
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

References

1. Southwest Region Staff (December 31, 2008). State Trunk Highway Log for Southwest Region (XLS). Madison, WI: Wisconsin Department of Transportation. 090E.

External links

Route map: Bing / Google

Media related to Interstate 90 in Wisconsin at Wikimedia Commons

• I-90 at Wisconsin Highways