Sun Prairie is a city in Dane County in the U.S. state of Wisconsin. A suburb of Madison, it is part of the Madison Metropolitan Statistical Area. The city's population was 35,967 at the 2020 U.S. Census. It is the second-most populous city in Dane County after Madison.
U.S. Highway 18 (US 18) is an east–west United States Numbered Highway in the Midwestern United States. The western terminus is in Orin, Wyoming, at an interchange with Interstate 25 (I-25). Its eastern terminus is in downtown Milwaukee, Wisconsin. However, US 18 runs concurrent with other U.S. Highways from its western terminus to Mule Creek Junction, Wyoming. US 18 is one of the original U.S. Highways of 1926. The US 18 designation was originally proposed for a road in Michigan from Grand Haven east to Detroit. This roadway was eventually designated as US 16.
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.
State Trunk Highway 29 is a state highway running east–west across central Wisconsin. It is a major east–west corridor connecting the Twin Cities and the Chippewa Valley with Wausau and Green Bay. A multi-year project to convert the corridor to a four-lane freeway or expressway from Elk Mound to Green Bay was completed in 2005. The remainder of WIS 29 is two-lane surface road or urban multi-lane road.
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 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 route 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 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 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 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.
State Trunk Highway 73 is a 265.84-mile (427.83 km) state highway in the central part of the US state of Wisconsin that runs mostly north–south from Ingram to near Edgerton. The exception is in Wood and Adams counties, where this highway runs east–west. It is one of the longer Wisconsin state highways.
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 Northwestern Railroad. 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.
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 14 (US 14) in the U.S. state of Wisconsin runs northwest–southeast across the western to southwest portions of the state. It links La Crosse and the southwestern portion of the state with Madison and Janesville. US 14 is mostly two-lane surface road with the exception of a few multilane urban arterials and a freeway section around Madison that it mostly shares with US 12.
U.S. Highway 18 (US 18) in the state of Wisconsin runs east–west across the southern part of the state. The highway serves as major connecting route between Madison and the southwest corner of the state. East of Madison, the route is paralleled by Interstate 94 (I-94) and serves as a local connection route to the communities along the Interstate. US 18 enters Wisconsin at Prairie du Chien and ends in downtown Milwaukee at Lincoln Memorial Drive, across from the Milwaukee Art Museum.
US 14 / WIS 78 in Mazomanie 
US 12 in Springfield Corners 
I-39 / I-90 / I-94 in Madison 
US 51 in Madison 
US 151 in Sun Prairie 
WIS 16 in Watertown 
