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.
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 151 (US 151) is a United States Numbered Highway that runs through the states of Iowa and Wisconsin. The southern terminus for US 151 is at a junction with Interstate 80 (I-80) in Iowa County, Iowa, and its northern terminus is at Manitowoc, Wisconsin. The route, from south to north follows a northeasterly path through the two states.
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.
State Trunk Highway 16 is a Wisconsin state highway running from Pewaukee across the state to La Crosse. Much of its route in the state parallels the former mainline of the Milwaukee Road and current mainline of the Canadian Pacific Railway. Interstate 90 (I-90) or I-94 parallels Highway 16 for most of its length in the state. It serves local traffic in nearby cities including La Crosse, Tomah, Wisconsin Dells, Portage, Columbus, Watertown, Oconomowoc and Waukesha. The highway is mainly two-lane surface road or urban multi-lane expressway from La Crosse to Oconomowoc, and it is a freeway east of Oconomowoc.
State Trunk Highway 11 is a state highway running east–west across southern Wisconsin. The highway connects Dubuque, Iowa with the cities of Janesville, Racine and Elkhorn. Most of the route is two-lane road with the exception of an expressway bypass of Monroe, a multilane bypass of Janesville, a section where it is concurrent with I-39 and I-90, a combined freeway/divided highway bypass of Burlington to the south, where it is partially concurrent with WI 36 and WI 83, and urban multilane highway in the greater Racine area.
State Trunk Highway 64 (WIS 64) is a 275.65-mile-long (443.62 km) highway in Wisconsin, which runs from the St. Croix Crossing bridge as a continuation of Minnesota State Highway 36 (MN 36) near Stillwater, Minnesota, and continues east to its eastern terminus in downtown Marinette, where it terminates at US Highway 41 (US 41) at an intersection on the corner of Marinette and Hall Avenue. Along the way, Highway 64 runs east–west through eight counties across northern Wisconsin.
State Trunk Highway 13 is a state highway running north–south across northwest and central Wisconsin. WIS 13 serves as a major north–south route connecting the communities of Wisconsin Dells, Wisconsin Rapids, Marshfield and Ashland. WIS 13 is part of the Lake Superior Circle Tour from its northern/western terminus to Ashland at is eastern junction with U.S. Highway 2 (US 2). The road also provides access to the Apostle Islands National Lakeshore off the Lake Superior shoreline at Bayfield. The highway is two-lane surface road with the exception of various urban multilane road sections.
U.S. Highway 10 (US 10) in Wisconsin runs east–west across the central part of the state. It runs from the Prescott Drawbridge over the St. Croix River at Prescott east to the dock in Manitowoc where SS Badger crosses Lake Michigan to Ludington, Michigan. The highway is also designated as the Vietnam War Veterans Memorial Highway for its entire length.
State Trunk Highway 21 is a state highway in the U.S. state of Wisconsin. It runs east–west across the center of the state between Sparta and Oshkosh. The highway often serves as a direct route for travelers between Appleton and Oshkosh to Tomah and La Crosse. It is a two-lane surface road for nearly all of its length, with the exception of a few urban arterials of four or more lanes. The section of WIS 21 between Fort McCoy and I-94 in Tomah is classified as a "Major STRAHNET Connector", while the route past I-94 is classified as a "Non-Interstate STRAHNET Route".
State Trunk Highway 25 is a state highway in Wisconsin, United States. The route serves local traffic in the western part of the state, connecting Durand, Menomonie and Barron. It is two-lane surface road with the exception of urban multilanes within Menomonie.
State Trunk Highway 26 is a state highway in the U.S. state of Wisconsin. The route is partially a divided highway with a few freeway bypass sections for roughly 50 miles (80 km). The remaining sections of WIS 26 are a two-lane road. WIS 26 provides direct access from Janesville to Oshkosh via Fort Atkinson, Watertown, and Waupun.
State Trunk Highway 27 is a state highway in the US state of Wisconsin. The highway spans a length of 294 miles (473 km) and is generally two-lane local road with the exception of urban multilane arterials within some cities. Earlier routing of the highway had it reaching Superior along the present US Highway 53 (US 53) and Fennimore along the present US 61 and following Interstate 94 (I-94) between Black River Falls and Osseo.
State Trunk Highway 28 is a 59.77-mile (96.19 km) state highway in Dodge, Washington, and Sheboygan counties in southeastern portion of the US state of Wisconsin that runs east–west between Horicon and Sheboygan. The route is generally two-lane road beyond portions of the road within the city of Sheboygan and the half-mile portion of the highway near Waldo which runs concurrently with Wisconsin Highway 57.
State Trunk Highway 42 is a state highway in the U.S. state of Wisconsin. It runs for 135 miles (217 km) north–south in northeast Wisconsin from Sheboygan to the ferry dock in Northport. Much of the highway is part of the Lake Michigan Circle Tour from the eastern junction with U.S. Highway 10 (US 10) in Manitowoc to its junction with WIS 57 in Sister Bay. WIS 42 parallels I-43 from Sheboygan to Manitowoc, and parallels WIS 57 throughout much of the route, particularly from Manitowoc to Sturgeon Bay, meeting the northern terminus of WIS 57 in Sister Bay.
Wisconsin Highway 57 is a 191.82-mile-long (308.70 km) state highway in Wisconsin, United States. It runs from its southern terminus at WIS 59 in Milwaukee to its northern terminus at WIS 42 in Sister Bay. Much of WIS 57 parallels Interstate 43 (I-43) and WIS 42, particularly from Saukville to its northern terminus in Sister Bay. The highway runs concurrently with I-43 for 12 miles (19 km) in Ozaukee County. Like most Wisconsin state highways, WIS 57 is maintained by the Wisconsin Department of Transportation (WisDOT).
State Trunk Highway 70 is a state highway in the U.S. state of Wisconsin. It runs east–west in northern Wisconsin from a shared terminus with WIS 101 at US Highway 2 (US 2) and US 141 near Florence to a connection with Minnesota State Highway 70 (MN 70) at the St. Croix River five miles (8.0 km) west of Grantsburg in Burnett County. It serves the communities of Grantsburg, Siren, Spooner, and the resort areas of Minocqua, Woodruff and Eagle River along its route. WIS 70 is the third-most northern route to almost completely cross Wisconsin, stretching from Minnesota to within four miles (6.4 km) of the Michigan border.
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).
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.
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.
WIS 64 / CTH-W in Merrill 
US 8 / WIS 47 in Rhinelander 
US 45 / WIS 32 / WIS 70 in Eagle River 
CR 436 near Phelps 
