| Interstate Highways of the Wisconsin State Trunk Highway System | |
|---|---|
Highway marker for Interstate 94 and Interstate 894 | |
 Interstate Highways highlighted in red | |
| System information | |
| Length | 1,099.11 mi [1] (1,768.85 km) |
| Formed | June 29, 1956 [2] |
| Highway names | |
| Interstates | Interstate nn (I-nn) |
| System links | |
The Interstate Highways in Wisconsin comprise five current primary Interstate Highways and three auxiliary Interstates.
| Number | Length (mi) [1] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 I-39 | 182.14 | 293.13 | I-39/I-90 near Beloit | US 51/WIS 29 in Rothschild | 1992 | current | ||
 I-41 | 175.43 | 282.33 | I-94/I-41/US 41 near Russell, IL | I-43 and US 41/US 141 in Howard | 2015 [3] | current | Overlaps US 41 in the state | |
 I-43 | 191.55 | 308.27 | I-39/I-90 and WIS 81 in Beloit | US 41/US 141 in Howard | 1981 | current | ||
 I-90 | 187.13 | 301.16 | I-90 in La Crosse | I-39/I-90 in Beloit | 1956 | current | ||
 I-94 | 348.23 | 560.42 | I-94/US 12 in Hudson | I-94/I-41/US 41 near Russell, IL | 1956 | current | ||
| Number | Length (mi) [1] | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 I-535 | 1.21 | 1.95 | US 53 and WIS 35 in Superior | I-535/US 53 at Duluth, MN | 1971 | current | Follows the John A. Blatnik Bridge and continues another 1.57 miles (2.53 km) to I-35 in Duluth | |
 I-794 | 3.50 | 5.63 | I-43/I-94/US 41 in Milwaukee | WIS 794 in Milwaukee | 1980 | current | Called the Lake Freeway and the East–West Freeway | |
 I-894 | 9.92 | 15.96 | I-94 and US 45 in West Allis | I-43/I-94 in Milwaukee | 1966 | current | Completely concurrent with I-41, part concurrent with I-43 called the Airport Freeway. | |
Interstate 39 (I-39) is a highway in the Midwestern United States. I-39 runs from Normal, Illinois, at I-55 to State Trunk Highway 29 (WIS 29) in the town of Rib Mountain, Wisconsin, which is approximately six miles (9.7 km) south of Wausau. I-39 was designed to replace U.S. Route 51 (US 51), which, in the early 1980s, was one of the busiest two-lane highways in the United States. I-39 was built in the 1980s and 1990s.
Interstate 43 (I-43) is a 191.55-mile-long (308.27 km) Interstate Highway located entirely within the US state of Wisconsin, connecting I-39/I-90 in Beloit with Milwaukee and I-41, U.S. Highway 41 (US 41) and US 141 in Green Bay. State Trunk Highway 32 (WIS 32) runs concurrently with I-43 in two sections and I-94, I-894, US 10, US 41, US 45, and WIS 57 overlap I-43 once each. There are no auxiliary or business routes connected to I-43, though an alternate route to direct traffic during road closures is signed along local and state highways from Milwaukee County north into Brown County.
Interstate 535 (I-535) is a 2.78-mile-long (4.47 km) auxiliary Interstate Highway spur route of I-35 in the US states of Minnesota and Wisconsin. It is paired with U.S. Highway 53 (US 53) along its entire route. The Interstate was part of the original 1956 Interstate Highway System and was completed in 1971. Since then, weight limits have been added to the Blatnik Bridge that carries the highway over Saint Louis Bay between Superior, Wisconsin, and Duluth, Minnesota.
US Highway 141 (US 141) is a north–south United States Numbered Highway in the states of Wisconsin and Michigan. The highway runs north-northwesterly from an interchange with Interstate 43 (I-43) in Bellevue, Wisconsin, near Green Bay, to a junction with US 41/M-28 near Covington, Michigan. In between, it follows city streets in Green Bay and has a concurrent section with US 41 in Wisconsin. North of Green Bay, US 141 is either a freeway or an expressway into rural northern Wisconsin before downgrading to an undivided highway. In Michigan, US 141 is an undivided highway that runs through rural woodlands. The highway has two segments in each state; after running through Wisconsin for about 103 miles (166 km), it crosses into Michigan for approximately another eight miles (13 km). After that, it crosses back into Wisconsin for about 14+1⁄2 miles (23 km) before crossing the state line one last time. The northernmost Michigan section is about 43+1⁄2 miles (70 km), making the overall length about 169 miles (272 km).
U.S. Highway 8 (US 8) is a United States Numbered Highway that runs primarily east–west for 280 miles (451 km), mostly within the state of Wisconsin. It connects Interstate 35 (I-35) in Forest Lake, Minnesota, to US 2 at Norway in the Upper Peninsula of Michigan near the border with Wisconsin. Except for the short freeway segment near Forest Lake, a section near the St. Croix River bridge, the interchange with US 51, and a three-mile (4.8 km) stretch west of Rhinelander, Wisconsin, it is mostly an undivided surface road. As a state highway in the three states, US 8 is maintained by the Minnesota, Wisconsin and Michigan departments of transportation.
U.S. Route 53, or U.S. Highway 53 (U.S. 53), is a north–south U.S. highway that runs for 404 miles (650 km) from La Crosse, Wisconsin to International Falls, Minnesota. It is the primary north–south route in northwestern Wisconsin, serving as a vital link between I-94 at Eau Claire, Wisconsin and the Twin Ports of Superior, Wisconsin, and Duluth, Minnesota. The entire route from Eau Claire to the city limits of Superior is a four lane divided highway. The highway's northern terminus is at the Fort Frances–International Falls International Bridge in International Falls, Minnesota, at the Canada–US border. Its southern terminus is in La Crosse, Wisconsin, at U.S. Highway 14.
Interstate 894 (I-894) is a 9.92-mile (15.96 km) auxiliary Interstate Highway in Milwaukee County in the US state of Wisconsin. The route serves as a bypass of downtown Milwaukee, connecting with I-94 at the Zoo Interchange west of downtown and the Mitchell Interchange south of downtown. The route runs concurrently with three other highways for its duration, following US Highway 45 (US 45) from the Zoo Interchange to Hale Interchange as the Zoo Freeway, where it separates from US 45 to follow I-43 heading east to the Mitchell Interchange as the Airport Freeway. In local traffic reporting and casual conversation, it is known simply as "the bypass" or "894", with "41" also being more recently used, as I-894 is entirely concurrent with I-41/US 41. The east–west portion is also concurrent with I-43.
Interstate 41 (I-41) is a 175.00-mile-long (281.64 km) north–south Interstate Highway connecting the interchange of I-94 and U.S. Route 41 (US 41), located about a mile (1.6 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 for its entire length, as well as portions of 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, and connects Milwaukee and Green Bay with the Fox Cities.
State Trunk Highway 23 is a state highway in the U.S. state of Wisconsin. The route is signed as a north–south route from Shullsburg to Wisconsin Dells and as an east–west route from Wisconsin Dells to Sheboygan. With the exception of freeway segments between Sheboygan Falls and Sheboygan, an expressway segment between Sheboygan Falls past Greenbush to Fond du Lac, a freeway concurrency with Interstate 39 (I-39), and an expressway segment concurrent with U.S. Highway 151 (US 151), the highway is generally either two-lane surface road or urban multilane arterial. WIS 23 provides access to several important Wisconsin destinations, such as the House on the Rock, the Wisconsin Dells area and various state parks.
State Trunk Highway 96 is a state highway in the U.S. state of Wisconsin. It runs east–west in east-central Wisconsin from near Fremont to Denmark.
State Trunk Highway 113 is a state highway in the U.S. state of Wisconsin. It runs in north–south in south central Wisconsin from Madison to Baraboo, following the Chicago and North Western Railway. The highway uses the Merrimac Ferry, the last ferry in the Wisconsin state highway system, to cross the Wisconsin River at Merrimac. Over the length of the road, it runs through Dane, Columbia, and Sauk counties.
State Trunk Highway 147 is a state highway in the U.S. state of Wisconsin. It runs in northwest–southeast in east central Wisconsin from near Maribel to Two Rivers. It is one of two state highways linking I-43 and WIS 42, the other being WIS 310.
State Trunk Highway 441, and also called the Tri-County Expressway or Highway 441 is a state highway in the US state of Wisconsin. Together with Interstate 41/US Highway 41 (I-41/US 41), the highway forms a beltway around the greater Appleton area, and is a freeway for the entire length of its route. It connects at both ends to its parent highway, I-41/US 41. It runs east–west and north–south in east central Wisconsin from near Neenah around Appleton to near Little Chute through Winnebago, Outagamie and Calumet counties. The Roland Kampo Memorial Bridge spans Little Lake Butte des Morts near the highway's southwest terminus.
U.S. Highway 51 (US 51) in the U.S. state of Wisconsin runs north–south through the central part of the state. It enters from Illinois at Beloit, and runs north to its northern terminus in Hurley at a roundabout junction with US 2. Some of the route of US 51 runs concurrently with Interstate 39 (I-39).
Trunk Highway 243 and State Trunk Highway 243 are two short state highways in the U.S. states of Minnesota and Wisconsin. They connect MN 95 in Franconia Township, Minnesota with WIS 35 in Osceola, Wisconsin. The two highways meet at the state line on a bridge across St. Croix River. The combined highway is 1.53 miles (2.46 km) in length, 1.23 miles (1.98 km) in Minnesota and 0.30 miles (0.48 km) in Wisconsin. The two highways were designated in 1949. The bridge across the St. Croix River dates to 1953.
U.S. Highway 12 in the U.S. state of Wisconsin runs east–west across the western to southeast portions of the state. It enters from Minnesota running concurrently with Interstate 94 (I-94) at Hudson, parallels the Interstate to Wisconsin Dells, and provides local access to cities such as Menomonie, Eau Claire, Black River Falls, Tomah, and Mauston. It then provides an alternative route for traffic between northwestern Wisconsin and Madison and is the anchor route for the Beltline Highway around Madison. Finally, it serves southeastern Wisconsin, connecting Madison with Fort Atkinson, Whitewater, Elkhorn, and Lake Geneva. The West Beltline Highway and the segment between Elkhorn and Genoa City are freeways, and the segment between Sauk City and Middleton is an expressway. The remainder of the road is a two-lane surface road or an urban multilane arterial. Between Hudson and west of Warrens, the road closely parallels the former main line of the Chicago, St. Paul, Minneapolis and Omaha Railway, now operated by Union Pacific Railroad.
U.S. Highway 41 (US 41) is a north–south highway United States Numbered Highway in eastern Wisconsin. It runs from Pleasant Prairie on the Illinois border north to Marinette on the Michigan border. Most of the route is concurrent with Interstate 41 in the state, with the exception of the portion between Howard, a suburb of Green Bay, and Marinette.
US Highway 2 (US 2) is a part of the United States Numbered Highway System that runs from Everett, Washington, to St. Ignace, Michigan. In Wisconsin, the highway enters runs east–west across the northwestern part of the state and re-enters the state in the northeast part. It runs from the Richard I. Bong Memorial Bridge over the Saint Louis Bay at Superior, where it enters from Minnesota, east to the Michigan state line near Hurley. Further east, US 2 re-enters Wisconsin from Michigan in Florence County and briefly traverses that county before re-entering Michigan. US 2 is a Wisconsin Corridors 2020 Connecting route east of its concurrency with US 53. The section concurrent with US 53 is a Wisconsin Corridors 2020 Backbone route.
Interstate 94 (I-94) runs east–west through the western, central, and southeastern portions of the US state of Wisconsin. A total of 348.23 miles (560.42 km) of I-94 lie in the state.
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.
