Interstate 41

Interstate 41
I-41 highlighted in red
Route information
Length:	176.33 mi (283.78 km)
Existed:	April 7, 2015 (2015-04-07)[1] – present
History:	Approved for designation in 2012[2]
Major junctions
South end:	I-94 / US 41 in Russell, IL
	I-43 / I-894 in Milwaukee, WI US 45 in Milwaukee, WI I-94 in Milwaukee, WI US 151 in Fond du Lac, WI US 45 in Oshkosh, WI US 10 / WIS 441 near Menasha, WI US 141 in Green Bay, WI
North end:	I-43 / US 41 / US 141 in Howard, WI
Location
States:	Illinois, Wisconsin
Counties:	IL: Lake WI: Kenosha, Racine, Milwaukee, Waukesha, Washington, Dodge, Fond du Lac, Winnebago, Outagamie, Brown
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Illinois State Highway System Interstate U.S. State Tollways Wisconsin State Trunk Highway System Interstate U.S. State Scenic Rustic ← IL 40 IL US 41 → ← WIS 40 WI US 41 →

Interstate 41 (I-41) is a 176.33-mile-long (283.78 km) Interstate Highway connecting the interchange of I-94 and U.S. Route 41 (US 41), located 0.9 miles (1.4 km) south of the Wisconsin–Illinois border at the end of the Tri-State Tollway in metropolitan Chicago, to an interchange with I-43 in metropolitan Green Bay, Wisconsin. The designation travels concurrently with US 41, I-894, US 45, I-43, and sections of I-94 in Wisconsin and Illinois. The route was officially added to the Interstate Highway System on April 7, 2015.^[1]

Route description

I-41 begins at the I-94/US 41 interchange in Russell, Illinois, located 0.9 miles (1.4 km) south of the Wisconsin–Illinois border at the end of the Tri-State Tollway. The highway continues north concurrently with I-94 to the Mitchell Interchange in Milwaukee, turns west to run concurrently with I-894 and I-43 to the Hale Interchange (forming a brief wrong-way concurrency with I-43), and turns north to run concurrently with I-894 and US 45 to the Zoo Interchange, with the US 45 concurrency continuing until the I-41/US 41/US 45 split near Richfield. The Interstate roughly parallels I-43, which runs north–south along Lake Michigan from Milwaukee to Green Bay. I-41 runs through the Fox Valley (including the cities of Fond du Lac, Oshkosh and Appleton, along with the Fox Cities) and Green Bay, where it ends at the I-43 interchange. The Interstate is approximately 176 miles (283 km) long and located almost entirely within the state of Wisconsin, and is completely concurrent with a slightly adjusted alignment of US 41 to its termination in Green Bay.^[3]

History

The freeway portion of US 41 and US 45 from Milwaukee through the Fox Valley to Green Bay was proposed and designated as an Interstate Highway as part of the 2005 highway funding bill (Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users).^[4]

In the initial language of the bill, the route was named Interstate 41, which correlates with the U.S. Highway it parallels and also complies with the Interstate naming guidelines through the American Association of State Highway and Transportation Officials (AASHTO). The final bill omitted the I-41 designation. In 2009, Green Bay officials began a campaign to have US 41 designated as a northern extension of I-55 from its current termination in Chicago, with the alternative being designated as a spur of I-43.^[5][6] At the spring meeting of the Special Committee on U.S. Route Numbers of AASHTO on May 18, 2012, the I-55 designation was discussed by the committee. Coordination would have been required with the FHWA and the Illinois Department of Transportation (IDOT) on the I-55 designation.

However, IDOT officials were not interested in signing an extension of I-55 from its Chicago terminus to the state line. Therefore, the Wisconsin Department of Transportation (WisDOT) decided to seek a different designation not requiring the cooperation of their Illinois counterparts. Four designations were proposed by WisDOT and put up for public review: two new primary designations (I-41 and I-47) and two auxiliary designations (I-594 and I-643).^[7] At the end of October 2012, WisDOT submitted I-41 to AASHTO for consideration at their fall Special Committee meeting, where it was conditionally approved on November 16, 2012, pending FHWA concurrence.^[2] Official approval of I-41 then hinged on weight limit exceptions being approved for the route,^[8] which initially passed the United States House of Representatives as H.R. 4745 and awaited a United States Senate vote as S. 2438,^[9] but were later passed in a different bill (H.R. 83) on December 16, 2014.^[10][11][12] On April 9, 2015, Wisconsin Governor Scott Walker announced that the FHWA had approved I-41 as part of the Interstate Highway System.^[13] According to WisDOT, the approval came two days earlier.^[1]

Newly installed I-41/US 41 sign south of WIS 145 near Richfield from June 2015

WisDOT replaced or modified 3,500 signs in September 2015 after coordination with IDOT and the FHWA.^[14] Over the next 5–10 years, shoulders are slated to be rebuilt as older parts of the highway are upgraded.^[15] The re-designation to Interstate status also makes the route subject to the Highway Beautification Act, meaning current advertising billboards along the Milwaukee to Green Bay portion of the road can no longer be upgraded or enlarged, nor can new signs be added.^[16]

Exit list

County	Location	mi	km	Exit[17][18]	Destinations	Notes
Lake	Newport Township	0.00	0.00	1B	I-94 east (Tri-State Tollway) US 41 south – Waukegan, Chicago	Southern end of I-94 and US 41 concurrencies; freeway continues southward as I-94; exit numbers based on I-94's mile markers
		0.76	1.22	1A	Russell Road	Signed as exit 1 northbound
		0.90 0.00	1.45 0.00	Illinois–Wisconsin state line
Kenosha	Pleasant Prairie	2.04	3.28	347	WIS 165 / CTH-Q (Lakeview Parkway)
		3.43	5.52	345	CTH-C
	Kenosha	5.07	8.16	344	WIS 50 – Kenosha, Lake Geneva
	Town of Somers	6.59	10.61	342	WIS 158 – Kenosha
		8.35	13.44	340	WIS 142 / CTH-S – Burlington, Kenosha
	Town of Paris	10.07	16.21	339	CTH-E
Racine–Kenosha county line	Mount Pleasant–Paris village/town line	12.08	19.44	337	CTH-KR (County Line Road)
Racine	Mount Pleasant	13.95	22.45	335	WIS 11 – Burlington, Racine
	Town of Yorkville	15.96– 16.01	25.69– 25.77	333	WIS 20 – Waterford, Racine
	Caledonia	19.64	31.61	329	CTH-K – Racine
	Town of Raymond	21.67	34.87	327	CTH-G
		23.17	37.29	326	Seven Mile Road
	Caledonia	24.10	38.79	325	WIS 241 north (27th Street)	Northbound exit and southbound entrance
Milwaukee	Oak Creek			324	Elm Road	Future exit, will replace exit 325
		26.39	42.47	322	WIS 100 (Ryan Road)
		28.47	45.82	321	Drexel Avenue
		29.41	47.33	320	CTH-BB (Rawson Avenue)
	Milwaukee	30.38	48.89	319	CTH-ZZ (College Avenue)
		31.08	50.02	318	WIS 119 – General Mitchell International Airport
		32.37	52.09	317	Layton Avenue
		32.53– 32.69	52.35– 52.61	10 316	I-94 east / US 41 south – Chicago, Airport I-43 north / I-94 west / US 41 north – Milwaukee I-894 west	Mitchell Interchange; northern end of I-94 concurrency; eastern end of I-43 wrong-way concurrency; eastern end of I-894 concurrency
		33.60	54.07	9	WIS 241 – South 27th Street	No access is allowed from I-94 west or to I-94 east; exit numbers based on I-894's mile markers
	Greenfield	34.64	55.75	8	WIS 36 – Loomis Road
		35.64	57.36	7	South 60th Street
		36.66	59.00	5B	South 76th Street	Westbound exit and eastbound entrance
		36.66– 37.14	59.00– 59.77	5A-B	South 76th Street, South 84th Street	Eastbound exit and westbound entrance
		36.86	59.32	5A	WIS 24 west – Forest Home Avenue	Westbound exit and eastbound entrance
	Milwaukee	38.06	61.25	4	I-43 south / US 45 south – Beloit, Chicago	Hale Interchange; western end of I-43 concurrency; southern end of the US 45 concurrency
	Greenfield	39.32	63.28	3	CTH-T (Beloit Road)
		39.93	64.26	2B	Oklahoma Avenue	Southbound exit and northbound entrance
	West Allis	40.67	65.45	2A	National Avenue	Southbound exit to westbound National Avenue only
		40.93	65.87	1E	Lincoln Avenue	Southbound exit and northbound entrance
		41.89	67.42	1D	WIS 59 – Greenfield Avenue
	Milwaukee	42.61	68.57	1 38	I-94 – Madison, Downtown Milwaukee, Chicago I-894 east	Western end of I-894 concurrency; signed as exits 1A (east) and 1B (west) northbound and exits 38A (west) and 38B (east) southbound; Zoo Interchange
	Wauwatosa	43.36– 43.60	69.78– 70.17	39	US 18 (Bluemound Road) / Wisconsin Avenue	Northbound exit is not signed for Wisconsin Avenue; exit numbers based on US 45's mile markers
		44.14– 44.56	71.04– 71.71	40	Watertown Plank Road, Swan Boulevard	Soutbound exit not signed for Swan Boulevard
		44.94	72.32	42A	WIS 100 north (Mayfair Road) / North Avenue east	Southbound exit not signed for WIS 100
		45.54	73.29	42B	North Avenue west
		46.59	74.98	43	Burleigh Street
		47.59	76.59	44	WIS 190 (Capitol Drive)	Three-level diamond interchange; access roads for the adjacent Harley-Davidson and Penzeys Spices plants are also part of the interchange
	Milwaukee	48.69	78.36	45	CTH-EE (Hampton Avenue)
		49.52	79.69	46	CTH-E south (Silver Spring Drive) / WIS 100	Southern end of WIS 100 concurrency
		51.05	82.16	47	WIS 175 (Appleton Avenue)
		51.85	83.44	47B	CTH-PP (Good Hope Road)	Exit numbers based on US 41's mile markers
		52.15– 52.94	83.93– 85.20	48	WIS 145
Waukesha	Menomonee Falls	54.64– 54.77	87.93– 88.14	50	WIS 74 west / WIS 100 east (Main Street)	Northern end of WIS 100 concurrency; signed as exits 50A (east) and 50B (west)
		55.45	89.24	51	Pilgrim Road	Signed as exits 51A (north) and 51B (south)
Washington	Germantown	56.68	91.22	52	CTH-Q (County Line Road)
		58.63	94.36	54	WIS 167 east (Mequon Road) / CTH-Y (Lannon Road)	Southern end of WIS 167 concurrency
		61.64	99.20	57	WIS 167 west (Holy Hill Road)	Northern end of WIS 167 concurrency
	Richfield	63.27	101.82	59	US 45 north – West Bend	Northern end of US 45 concurrency; northbound exit and southbound entrance
		64.37	103.59	60	CTH-FD to WIS 145	Signage reads WIS 145; ramp signage reads CTH-FD TO WIS 145
	Slinger	68.17	109.71	64	WIS 60 – Jackson, Slinger, Hartford	Signed as exits 64A (east, Jackson) and 64B (west, Slinger, Hartford) northbound. Commerce Blvd
	Town of Polk	70.45	113.38	66	WIS 144 – West Bend, Slinger
	Town of Hartford	72.12	116.07	68	CTH-K
	Town of Addison	76.37	122.91	72	WIS 33 / CTH-W – West Bend, Allenton
	Town of Wayne	79.59	128.09	76	CTH-D
Dodge	Town of Theresa	85.22	137.15	81	WIS 28 – Mayville, Kewaskum
	Lomira	89.24	143.62	85	WIS 67 – Lomira, Campbellsport
	Town of Lomira	91.29	146.92	87	WIS 49 / CTH-KK – Brownsville, Waupun
Fond du Lac	Town of Byron	96.10	154.66	92	CTH-B – Oakfield, Eden
	Fond du Lac	99.71– 99.72	160.47– 160.48	95	US 45 south / US 151 – Madison, Manitowoc	Southern end of US 45 overlap
		101.01	162.56	97	CTH-VVV (Hickory Street)
		101.84	163.90	98	CTH-D (Military Road)	Former US 151
		103.74	166.95	99	US 45 north / WIS 23 (Johnson Street) – Rosendale, Ripon	Northern end of US 45 overlap
	North Fond du Lac	104.24	167.76	101	CTH-OO (Winnebago Street)
	Town of Eldorado	110.27	177.46	106	CTH-N – Van Dyne
Winnebago	Town of Nekimi	117.47	189.05	113	WIS 26 / CTH-N – Rosendale, Waupun, Pickett
	Oshkosh	120.22	193.48	116	WIS 44 / WIS 91 (South Park Avenue, Ripon Road) – Waukau
		121.64	195.76	117	9th Avenue
		123.14	198.17	119	WIS 21 (Omro Road, Oshkosh Avenue) – Omro
		125.05	201.25	120	US 45 (Algoma Boulevard) to US 10 west – New London	To US 10 west not signed southbound
		128.10	206.16	124	WIS 76 (Jackson Street)
	Neenah	133.30	214.53	129	Bell Street, Breezewood Lane
		134.67	216.73	131	WIS 114 / CTH-JJ (Winneconne Avenue) – Hilbert, Sherwood
		135.61	218.24	132	Main Street, Oak Ridge Road	No entrance ramps
	Town of Menasha	136.35	219.43	133	CTH-II (Winchester Road) – Winchester
		137.81	221.78	134	US 10 east / WIS 441 north
		137.86	221.86		US 10 west	Southbound exit and entrance only
		139.62	224.70	136	CTH-BB (Prospect Avenue)
Outagamie	Town of Grand Chute	140.88	226.72	137	WIS 125 (College Avenue)
		141.65	227.96	138	WIS 96 (Wisconsin Avenue) – Fremont
		142.71	229.67	139	WIS 15 / CTH-OO (Northland Avenue) to CTH-A – Greenville, Hortonville	To CTH-A not signed southbound
		145.67	234.43	142	WIS 47 (Richmond Street) – Black Creek
	Appleton	147.67	237.65	144	CTH-E (Ballard Road)
		148.59– 148.61	239.13– 239.16	145	WIS 441 south
	Town of Little Chute	151.10	243.17	146	CTH-N – Little Chute, Kimberly, Combined Locks
	Kaukauna	152.78	245.88	148	WIS 55 – Seymour, Kaukauna
		153.99	247.82	150	CTH-J – Kaukauna
	Town of Kaukauna	158.25	254.68	154	CTH-U – Wrightstown
Brown	Town of Lawrence	161.21	259.44	157	CTH-S – Freedom
		181.87	292.69	161	CTH-F (Scheuring Road) – De Pere
	Ashwaubenon	167.12	268.95	163A	CTH-G (Main Avenue)	Signed as exit 163 southbound
		167.40	269.40	163B	WIS 32 north (Ashland Avenue) – Green Bay	Northbound exit and southbound entrance
		168.39	271.00	164	CTH-AAA (Oneida Street, Waube Lane)
		169.36– 169.46	272.56– 272.72	165	WIS 172 to I-43 / WIS 57 – A. Straubel Airport	To WIS 57 not signed northbound
		171.14	275.42	167	CTH-VK (Lombardi Avenue, Hazelwood Lane)
	Green Bay	172.18	277.10	168	WIS 32 south / WIS 54 (Mason Street)	Southern end of WIS 32 concurrency
	Howard	173.17	278.69	169	WIS 29 (Shawano Avenue) / WIS 32 north / Dousman Street	Northern end of WIS 32 concurrency
		174.75	281.23	170	US 141 south (Velp Avenue)	Southern end of US 141 concurrency
		175.16– 175.43	281.89– 282.33	171	I-43 south – Milwaukee US 41 north / US 141 north – Marinette, Iron Mountain	Northern end of US 41 concurrency; northern end of US 141 concurrency; northern terminus of I-43; I-41 terminates at northbound entrance ramp from I-43
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access       Unopened

See also

• U.S. Roads portal
• Illinois portal
• Wisconsin portal

References

External links

Wikimedia Commons has media related to Interstate 41.

Route map: Bing / Google

• Official US 41 Interstate conversion project page
• Interstate 41 at Interstate-Guide.com

Main Interstate Highways
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Unsigned	A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3
Lists	Primary Main Suffixed Temporary Future Auxiliary Main Other Standards Business Bypassed Gaps Tolled
Major Interstates highlighted