Twelve special routes of U.S. Highway 151 exist. Three of which are located in Iowa and the other nine are in Wisconsin.
US 151 Bus. runs along 1st Avenue in downtown Cedar Rapids
U.S. Route 18 in Wisconsin
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U.S. Highway 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
Special routes of U.S. Route 151
…The entire route is in Iowa County. Business U.S. Highway 151 (Bus. US 151) is a former segment of US 18/151 between Exits 65 and 69 within Mount Horeb. The route is also shared by US 18 Business, as well as parts of Wisconsin Highway 78 and Dane County…
US-18/Wis-35 in Prairie du Chien
US 18/WIS 133 in Patch Grove
The old US 18 bridge over the Wisconsin River in Bridgeport