WIS 23, east of US 151 (Fond du Lac) to County P (Plymouth), in Fond du Lac and Sheboygan counties.
WIS 23 is an important east-west route through the state of Wisconsin and needs to serve two distinct user groups, motorists passing through the area and local residents.
It is classified as a Corridor 2030 connector highway, meaning it has been designated as a highly important state roadway. In 1999, WIS 23 was selected by the state Legislature to receive funding for improvements.
The project objective is to add capacity, and increase safety, by expanding the existing 2-lane highway to a 4-lane expressway. No bypasses will be necessary along the route.