A total of three business routes of

U.S. Route 12 U.S. Route 12 (US 12) is an east–west United States Numbered Highways, United States highway, running from Aberdeen, Washington, to Detroit, Detroit, Michigan, for almost . The highway has mostly been superseded by Interstate 90 (I-90) an ...

currently exist in

Wisconsin Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...

Business routes A business route (or business loop, business spur, or city route) in the United States is a short special route connected to a ''parent'' numbered highway at its beginning, then routed through the central business district of a nearby city or ...

typically run through cities, after a highway was realigned. None are official state highways according to the

Wisconsin Department of Transportation The Wisconsin Department of Transportation (WisDOT) is a governmental agency of the U.S. state of Wisconsin responsible for planning, building and maintaining the state's highways. It is also responsible for planning transportation in the state ...

(WisDOT) and are thus locally maintained.

Eau Claire

Business U.S. Highway 12 (Bus. US 12) was a business loop in Eau Claire. Between the mid-1940s to 1964, WIS 172 served as the business route of US 12 in Eau Claire. During this time, there were several alterations made on that route. Then, Bus. US 12 was formed to run along WIS 172, forming a brief concurrency. Within a year after the formation, WIS 172 was decommissioned in favor of the new business route. During its existence, nothing significant had happened to the routing. In 1995, the business route was decommissioned.

Lake Delton–Baraboo

Business Highway 12 in

Lake Delton Lake Delton is a man-made freshwater lake in Sauk County in central Wisconsin. For much of 2008, it was a mostly empty lake basin after a portion of a county highway that forms part of the dike wall eroded on June 9, 2008, under the pressure of ...

follows the old alignment of US 12. It is co-signed as CTH-BD; extending until West Baraboo. In

Baraboo Baraboo is a city in the Midwest and the county seat of Sauk County, Wisconsin, United States. The largest city in the county, Baraboo is the principal city of the Baraboo Micropolitan Statistical Area. Its 2020 population was 12,556. It is situ ...

, it follows the former alignment of US 12 through the city of Baraboo. It is concurrent with

Wisconsin Highway 33 State Trunk Highway 33 (often called Highway 33, STH-33 or WIS 33) is a Wisconsin state highway running east–west across central Wisconsin. It is in length. Route description La Crosse to Baraboo WIS 33 begins east of the Mississip ...

and

Wisconsin Highway 113 State Trunk Highway 113 (often called Highway 113, STH-113 or WIS 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, The highway uses the Merrimac Ferry, the last ...

Sauk Prairie

Business Highway 12 in

Sauk City Sauk City is a village in Sauk County, Wisconsin, United States, North America. The population was 3,518 as of the 2020 census. The first incorporated village in the state, the community was founded by Agoston Haraszthy and his business partner, R ...

and

Prairie du Sac Prairie du Sac is a village in Sauk County, Wisconsin, United States. The population was 4,420 at the 2020 census. The village is surrounded by the Town of Prairie du Sac, the Wisconsin River, and the village of Sauk City; together, Prairie du Sa ...

(collectively called " Sauk Prairie") follows the former alignment of US 12. It is concurrent with

Wisconsin Highway 78 State Trunk Highway 78 (often called Highway 78, STH-78 or WIS 78) is a state highway in the U.S. state of Wisconsin. It runs north–south in south central Wisconsin from Portage to the Illinois border near Gratiot. History In the 1920s, Hi ...

for much of its length.

Madison

Business U.S. Highway 12 (Bus. US 12) was a business loop in Madison. After the Madison Beltline was almost finished, Bypass U.S. Highway 12, as well as Bypass WIS 13, Bypass US 14, and Bypass US 18, temporarily take over the bypass. After the beltline was completed, all bypass routes on the beltline was replaced by their parent route (US 12, US 14, US 18, and WIS 13). As a result, City U.S. Highway 12, as well as City US 14 and City WIS 13, was formed. As of 1963, all city routes, including City US 12, were turned into business routes. Around the early 1970s, all of Madison's business routes (except for the already-decommissioned Bus. WIS 13) were decommissioned.

Whitewater

Business Highway 12 in

Whitewater Whitewater forms in a rapid context, in particular, when a river's gradient changes enough to generate so much turbulence that air is trapped within the water. This forms an unstable current that froths, making the water appear opaque and ...

follows the former alignment of US 12. From west to east, it follows Main Street, Milwaukee Street, and part of

Wisconsin Highway 59 State Trunk Highway 59 (often called Highway 59, STH-59 or WIS 59) is a state highway (US), state highway that runs east–west in the southeastern part of the U.S. state of Wisconsin from Milwaukee, Wisconsin, Milwaukee to Monroe, Wisconsin, Mon ...

(which runs concurrent with WIS 59 for some of its length).

References

{{Reflist U.S. Route 12 12 in Wisconsin 12