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US 41 Project: Winnebago County construction

Winnebago County Construction in Winnebago County occured from 2009-2014 over 17 miles of highway 41 from WIS 26 to Breezewood Lane. This stretch of highway includes a new eight-lane Lake Butte des Morts Causeway. This portion of construction also features the addition of 16 roundabouts and the reconstruction of four interchanges, including the WIS 21 and the US 45/US 41 interchanges. For additional information about Winnebago County construction projects see the detailed project briefs and construction map below. 

Construction impacts
2012 was the last year for interchange closures for the US 41 Project in Winnebago County. If you would like more information about newly reconstructed and upgraded US 41 interchanges in Winnebago County, visit improved interchanges page.

To view past project briefs for Winnebago County, visit the Project Brief Archive

Roundabout Locations
For the locations of completed roundabouts, check out our Winnebago County RAB Map.