Wisconsin Highway 23 is part of the National Highway System (NHS) and is a rural principal arterial that connects Fond du Lac and Sheboygan in east central Wisconsin. Both west and east ends of the project are located in growing urban areas of Fond du Lac and Plymouth. Nearly 20 miles in length, this highway corridor serves high traffic volumes near the urban areas and lower traffic volumes in rural areas. This combined Limited Scope Final Environmental Impact Statement and Record of Decision (LS SFEIS/ROD) evaluates the No- Build Alternative, several Build Alternatives, and a series of corridor preservation alternatives for future transportation improvements, and selects an alternative. The Preferred Build Alternative is the Selected Alternative and reconstructs WIS 23 to a 4-lane divided highway on the existing alignment and creates interchanges, connector roads, and a trail. Corridor roads as well as the UW 151/WIS 23 interchange.