WIS 23 Expansion - Plymouth to Fond du Lac

Sheboygan/Fond du Lac Counties

Project Overview

WIS 23 Expansion – Overall Project

*NOTE: Construction begins MONDAY, MAY 13 on the Sheboygan County portion of the project: West Sheboygan/Fond du Lac County line to County P in the city of Plymouth.


The project will reconstruct 19.1 miles of WIS 23 as a 4-lane, on-alignment divided highway from US 151 in Fond du Lac east to County P in Plymouth.  Numerous WIS 23 intersections will also be improved as part of the project. This website details current construction focusing on Sheboygan County. Improvements in Fond du Lac County as part of the WIS 23 Expansion Projection are still in design and can be found in the combined Limited Scope Supplemental Final Environmental Impact Statement (LS SFEIS) and Record of Decision (ROD). The documents are available for viewing at:


WIS 23 expansion will be conducted in three segments starting in 2019 and concluding in 2022: Sheboygan County (2019-20) Fond du Lac County – Rural (2020-21), Fond du Lac – Urban (2021-22). The final construction activity includes resurfacing of the existing lanes of travel in 2022.

Traffic Impacts

In general, for all sections of the WIS 23 project, traffic will remain open in each direction on existing WIS 23 lanes during construction while the additional lanes are being built.

  • There may be short periods of time when WIS 23 traffic may be reduced to a single lane using lagging operations.
  • There may be short periods of time when WIS 23 traffic is detoured for a short period (a few nights or weekend days) for culvert replacements.

As each section of WIS 23 is completed, those sections will be opened to traffic on all 4 lanes.

Sheboygan County Construction (2019-2020)

WIS 23 4-lane, on-alinement expansion beings May of 2019 in Sheboygan County from County P to the west county line. Grading will take place in 2019. Lane additions will take place in 2020.

Sheboygan County Corridor, Full Display 1 of 2

Sheboygan County Corridor, Full Display Map 2 of 2

Sheboygan County Intersection Detail Maps

2019 Construction

  • Location/limits: WIS 23 from the West Sheboygan/Fond du Lac County line to County P in the city of Plymouth.
  • Length of project in miles: 7.42 miles
  • Construction schedule: May 13, 2019 to mid-November 2019.
  • Description of work: This work is part of the WIS 23 4-lane, on-alignment expansion project scheduled for 2019-2022 in Sheboygan and Fond du Lac counties. Work will begin in Sheboygan County in 2019 and includes subgrade construction of the additional lanes in the Sheboygan County work zone, grading, drainage culverts and inlets, westbound structure over the Mullet River, westbound structure over the Ice Age Trail, wetland mitigation site, and other incidental items of work.
  • Traffic impacts: WIS 23 will remain open to one lane in each direction on the existing lanes at all times except for a single nighttime closure for construction of a culvert near Division Road.
  • Local Road traffic impacts: The following side road intersections with will be permanently close as part of the Sheboygan County 2019 Construction Segment:
    • Julie Court (East)
    • Ridge Road (North)
    • Coary Lane
    • Twinkle Lane
    • Branch Road
    • For all other side roads in this section, the contractor is required to keep one lane open in each direction throughout construction.
  • Detour: A single nighttime WIS 23 closure and associated detour will be required when constructing a culvert located approximately 900 feet east of Division Road. The short term WIS 23 detour will follow County G, County C, and County T.
  • In-construction weekly updates: https://projects.511wi.gov/weeklyupdates-ne/

WIS 23 Project Benefits

WIS 23 improvements will provide the following benefits:

  • Provide a safe and dependable highway connection to and from regional communities while reducing conflicts between local and through traffic.
  • Improve the highway facility to meet current design standards for this Connector route in Wisconsin.
  • Complete the system link of US 41 to I-43 between the cities of Fond du Lac and Sheboygan.
  • Improve safety at intersections and farm crossings.
  • Increase corridor mobility and minimizing public and private access.
  • Preserve the corridor for future transportation use by coordinating local governmental land use plans.
  • This will alleviate development pressures on WIS 23 and intersecting roads, preserving the corridor for future transportation use.
  • Maintain a rural highway-type facility while addressing the increased traffic needs of the expanding urban area.