Interstate 43

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Interstate 43 Main route of the Interstate Highway System
Maintained by WisDOT
Length:	191.55 mi[1] (308.27 km)
South end:	I-39 / I-90 / WIS 81 in Beloit, WI
Major junctions:	I-94 in Milwaukee, WI
North end:	US 41 / US 141 near Green Bay, WI
Wisconsin highways < WIS 42 WIS 44 > County - Bannered - Rustic
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Interstate 43 (abbreviated I-43) is an intrastate Interstate highway located entirely within the state of Wisconsin. The highway connects Milwaukee with Green Bay, Manitowoc, and Sheboygan and points north. The route also connects Elkhorn and Beloit with Milwaukee.

Contents 1 Route description 2 History 3 Exit list 4 References

[edit] Route description

I-43 begins in Rock County as the eastern leg of a cloverleaf interchange with I-39/I-90 just east of Beloit. The highway becomes Wisconsin Highway 81 west of the interchange. I-43 passes Clinton to the north at WIS 140 and passes into Walworth County five miles east of WIS 140.^[2] I-43 passes north of Darien and crosses US 14 at that point, then junctions with WIS 50 south of Delavan.

In Elkhorn, I-43 junctions with WIS 67, US 12, and WIS 11. I-43 passes through East Troy about ten miles northeast of Elkhorn and junctions with WIS 20 and Wisconsin Highway 120. I-43 then enters Waukesha County at Mukwonago.^[3] I-43 crosses WIS 83 at an interchange just southeast of the village. After about eight miles, the highway junctions with WIS 164 just north of Big Bend, and then enters the city of Muskego. I-43 crosses interchanges with South Racine Avenue (CTH Y) and South Moorland Road (CTH O) in Muskego.

Beginning in Muskego, I-43 is known as the Rock Freeway.^[4] I 43 then passes into New Berlin and turns east to enter Milwaukee County.^[5]

I-43 connects with US 45 south and WIS 100 at South 108th Street. US 45 joins I-43 for one mile, then turns northward onto I-894 west at the Hale Interchange while I-43 follows I-894 east along the Airport Freeway into Greenfield, Wisconsin, crossing interchanges with WIS 24, WIS 36 and WIS 241 along the way. I-43 and I-894 junction with I-94 and US 41, known in Milwaukee as the North-South Freeway, at the Mitchell Interchange. I-43 follows the North-South Freeway (with I-94 and US 41) north into downtown Milwaukee, where it meets I-794 at the Marquette Interchange.

I-43 continues north from the Marquette, while I-94 and US 41 turn westward. I-43 crosses WIS 145 at the McKinley Boulevard/Fond du Lac Avenue interchange. On the way north out of Milwaukee, I-43 passes through Glendale, junctioning with WIS 190 (Capitol Drive) and WIS 57 (Green Bay Ave). WIS 100 and WIS 32 connect at Brown Deer Road and WIS 32 follow I-43 north into Ozaukee County, Wisconsin.^[6][7]

I-43 is joined by WIS 57 three miles north of the county line in Mequon at the junction of Wisconsin Highway 167. WIS 60 terminates in Grafton at the interstate seven miles further north and WIS 32 turns off toward Port Washington one mile north of WIS 60. WIS 33 crosses the route in Saukville. WIS 57 turns north off the freeway, which turns eastward to go around Port Washington to the north. WIS 32 rejoins the freeway on the north side and I-43 and WIS 32 follow the [[Lake Michigan Shorline northeast into Sheboygan County.^[8] WIS 32 leaves the freeway at Cedar Grove and I-43 passes Oostburg to the east and Sheboygan, Wisconsin to the west. I-43 Sheboygan interchanges are at WIS 28, WIS 23, and WIS 42 I-43 enters Manitowoc County after nine miles from Sheboygan.^[9]

I-43 passes Cleveland on the county line. The highway continues to follow the lakeshore to Manitowoc, then bypass the city to the west. I-43 connects with US 151 and WIS 42. WIS 42 north follow I-43 north to the interchange with US 10. WIS 42 leaves to the east along with US 10 east, and US 10 west follow I-43 north to the interchange with WIS 310 where it turns off to the west. I-43 passes Francis Creek and Maribel (at WIS 147) and turns northwestward into Brown County, with a rest stop located just before the county line.^[10] The interstate passes Denmark and meets the terminus of WIS 96 one mile north of the county line. I-43 then continues another seven miles to Bellevue where US 141 begins. This interchange provides access to Wisconsin Highway 29, a route I-43 crosses under later.

I-43 junctions with WIS 172 in Allouez then turns northeast to bypass Green Bay to the east, passing under the aforementioned WIS 29. After turning northwestward, I-43 crosses WIS 54 and WIS 57 and the Fox River. I-43 ends at US 41 and US 141. It is rumored that State Highway 29, from Green Bay to Eau Claire is to be the westward extension of I-43, which will then reconnect with I-94, 100 miles east of Minneapolis^[11]

[edit] History

The highway route that is now I-43 existed for several years prior to its designation as an Interstate highway. The section from its southern terminus to its intersection with I-894 in Milwaukee was originally designated Wisconsin STH 15. The section running from Interstate 94 and Interstate 794 in Milwaukee to the northern terminus was originally designated US 141. The latter section was the first designated as I-43. I-43 between Interstate 894 and the southern terminus is historically known as the "Rock Freeway," representing the freeway's link between Milwaukee and Rock County.^[12]

The original plan for the northern part of I-43 was to locate it midway between US 141 (the former designation for the current I-43) and US 41, using most of the current alignment of Wisconsin STH 57 north of Wisconsin STH 33 in Saukville. But opposition to the plan prompted a compromise to utilize the freeway built for US 141 between Milwaukee and Sheboygan instead, building the remaining freeway for the interstate itself. The segment was completed in 1981. The southwestern segment's road was built between 1969 and 1972 from Big Bend to East Troy. It was extended to Elkhorn in 1973, then to I-90 in 1976. I-43 markers were placed on the freeway by 1991 after designation in 1987. Mileposts were renumbered to coincide with the current length by 1991.^[12]

[edit] Exit list

County	Location	#	Destinations	Notes
Rock	Beloit	none	WIS 81 West – Beloit	Southern terminus - Milwaukee Rd; continues into Beloit
		1A	I-39 South / I-90 East – Chicago
		1B	I-39 North / I-90 West – Madison
		2	CTH X / Hart Rd
	Clinton	6	WIS 140 – Clinton, Avalon
Walworth	Darien	15	US 14 – Janesville, Darien
	Delavan	17	CTH X – Delavan, Darien
		21	WIS 50 – Delavan, Lake Geneva
	Elkhorn	25	WIS 67 – Elkhorn, Williams Bay
		27A-B	US 12 – Madison, Lake Geneva
		29	WIS 11 – Elkhorn, Burlington
	East Troy	33	Bowers Rd
		36	WIS 120 – East Troy, Lake Geneva
		48	WIS 20 – East Troy, Waterford
Waukesha	Mukwonago	43	WIS 83 – Waterford, Mukwonago
	Big Bend	50	WIS 164 – Waukesha, Big Bend
	New Berlin	54	CTH Y (Racine Ave) – Muskego
		57	Moorland Rd
		59	Layton Ave	Northbound traffic exits to left
Milwaukee	Greenfield	60	US 45 South / WIS 100 – 108th St	North follow North
		61	I-894 West / US 45 North – Fond du Lac	Hale Interchange Northbound
		4 (I-894)	I-43 South / US 45 South – Beloit	follow West Hale Interchange Southbound
		5A (I-894)	WIS 24 – Forest Home Ave	Southbound POV
		5B (I-894)	South 76th St	Southbound POV
		5A-B (I-894)	South 76th St, South 84th St	Northbound POV
		7 (I-894)	South 60th St
		8 (I-894)	WIS 36 – Loomis Rd
	Milwaukee	9A-B (I-894)	WIS 241 – South 27th St	One Exit Eastbound, Two Exits Westbound
		10B (I-894)	I-94 East / US 41 South – Chicago, Airport	Mitchell Interchange Northbound
		316 (I-94)	I-43 South / I-894 West – Beloit	Southbound
		314 A-B (I-94)	Holt Ave, Howard Ave	Two Exits Eastbound, One Exit Westbound
		312 A (I-94)	Lapham Blvd, Mitchell St	Eastbound POV
		312 B (I-94)	Becher St, Lincoln Ave	Eastbound POV
		312 A-B (I-94)	Becher St, Mitchell St, Lapham Blvd, Greenfield Ave	Westbound POV
		311 (I-94)	WIS 59 – National Ave, 6th St	Eastbound POV
			WIS 59 – National Ave	Westbound POV
		72A	I-794 – Lakefront, Port of Milw	Marquette Interchange
		72B	I-94 West / US 41 North – Madison
		72C	Civic Center, Kilbourn Ave	Northbound POV - no access directly from I-43 - access is from I-94 eastbound to I-43 northbound ramp
			Civic Center, Highland Ave	Southbound POV
		73A	4th St, Broadway
		73B	WIS 145 – Fond du Lac Ave, W McKinley Blvd
		73C	North Ave
		74	Locust St
		75	Keefe Ave, Atkinson Ave
		76A	WIS 190 East – Capitol Dr	Northbound
		76B	WIS 57 / WIS 190 West – Green Bay Ave, Capitol Dr	Northbound
		76A-B	WIS 57 / WIS 190 – Capitol Dr, Green Bay Ave	Southbound
	Glendale	77A	Hampton Ave east	Northbound exit only
		77B	Hampton Ave west	Northbound exit; Southbound entrance only (both directions)
		78	Silver Spring Dr
		80	Good Hope Rd
	Fox Point	82A	Brown Deer Rd east	Northbound
			WIS 32 South – Brown Deer Rd	Southbound North follow North
		82B	WIS 100 West – Brown Deer Rd
	Bayside	83	CTH W – Port Washington Rd	Northbound exit only; southbound entrance at County Line Rd
Ozaukee	Mequon	85	WIS 57 south / WIS 167 – Mequon Rd	North follow North Thiensville use Exit 85
		89	CTH C – Cedarburg
	Grafton	92	WIS 60 / CTH Q – Grafton, Cedarburg
		93	WIS 32 North / CTH V – Grafton, Port Washington
	Saukville	96	WIS 33 – Saukville, Port Washington
		97	WIS 57 North – Plymouth	Southbound entrance; Northbound exit
	Port Washington	100	WIS 32 South / CTH H – Fredonia, Port Washington
	Belgium	107	CTH D – Belgium, Lake Church	Harrington Beach State Park
Sheboygan	Cedar Grove	113	WIS 32 North – Cedar Grove
	Oostburg	116	CTH A (Foster Rd) – Oostburg
	Weedens	120	CTH V / CTH OK – Waldo, Sheboygan	Kohler-Andrae State Park
	Sheboygan	123	WIS 28 – Sheboygan, Sheboygan Falls
		126	WIS 23 – Sheboygan, Plymouth	Full cloverleaf interchange
	Erdman	128	WIS 42 – Sheboygan, Howards Grove
Manitowoc	Cleveland	137	CTH XX – Kiel, Cleveland
	Duvenek	144	CTH C – St. Nazianz, Newton
	Manitowoc	149	US 151 / WIS 42 South – Manitowoc, Chilton	North follow North
		152	US 10 East / WIS 42 North / CTH JJ – Manitowoc	West follow North South follow South
	Branch	154	US 10 West / WIS 310 – Appleton, Two Rivers	follow South Point Beach State Forest
	Francis Creek	157	CTH V – Mishicot, Francis Creek
	Kellnersville	160	CTH K – Kellnersville
	Maribel	164	WIS 147 / CTH Z – Maribel, Mishicot	Northbound
			WIS 147 / CTH Z – Maribel, Two Rivers	Southbound POV Mishicot use Exit 164
Brown	Denmark	171	WIS 96 / CTH KB – Greenleaf, Denmark
	Bellevue	178	US 141 to WIS 29 / CTH MM – Bellevue, Kewaunee
	Green Bay	180	WIS 172 to US 41 – A Straubel Airport
		181	CTH J / Eaton Rd, Manitowoc Rd
		183	CTH V / Mason St
		185	WIS 54 / WIS 57 – Sturgeon Bay, Algoma
		187	Webster Ave, East Shore Dr
		189	Hurlbut Dr, Port of Green Bay	Northbound
			Atkinson Dr, Velp Ave	Southbound
	Howard	192A	US 41 North / US 141 North – Marinette, Iron Mountain
		192B	US 41 South / US 141 South – Appleton	Northern Terminus

[edit] References

edit Main Interstate Highways (multiples of 5 in pink)
4	5	8	10	12	15	16	17	19	20	22	24	25	26	27	29	30
35	37	39	40	43	44	45	49	55	57	59	64	65	66	68	69
70	71	72	73	74	75	76 (W)		76 (E)		77	78	79	80	81	82
83	84 (W)		84 (E)		85	86 (W)		86 (E)		87	88 (W)		88 (E)		89	90
91	93	94	95	96	97	99	(238)		H-1		H-2		H-3
Unsigned			A-1		A-2		A-3		A-4		PRI-1		PRI-2		PRI-3
Lists		Primary			Main - Intrastate - Suffixed - Future - Gaps
		Auxiliary			Main - Future - Unsigned
		Other			Standards - Business - Bypassed