Washington County Highway Department Construction & Projects

Washington County road construction is prioritized on the basis of need and roads are built with federal aid if possible with contracts let to the lowest bidder. The Department's long-range road improvement plans are detailed in its 2050 Transportation Network Sustainability Plan. All County and State projects displayed are subject to change.



CTH Q & Hillside Roundabout

Washington County is striving to improve safety at the intersection of CTH Q and Hillside Road along the southern border of the Village of Richfield and the county. The intersection has experienced a total of 30 crashes between 2014 and 2018 with 50% of them involving injuries. The intersection is currently under two-way stop-control with stop signs on Hillside Road and traffic free-flowing on CTH Q. The intersection will be converted to a single-lane modern roundabout in effort to address the type of crashes that have been occurring as well as their severity. The project is being funded through the Highway Safety Improvement Program (HSIP) which involves a 90% federal/state and 10% local/municipal funding split. Construction is scheduled for 2023.

Q-Hillside Plan Image

Public Informational Meeting Notice (March 21, 2023)
Final Plan (Oct 2022)
Highway Work Proposal
60% Plan
PIM Notice and Comment Form (Oct 2021)
PIM Presentation (Oct 2021)
Project Map (36x24)


CTH M Reconstruction 

Washington County is planning the roadway reconstruction of a 1.5-mile section of CTH M (Wasaukee Rd) from the intersection of Freistadt Rd (CTH F) northerly 1.5 miles. The project is located in the Village of Germantown and City of Mequon.

The project will improve the poor condition of the existing roadway pavement with upgrades to the vertical curves, roadway cross section (paved shoulders), and improvements to the Highland Road and CTH F intersections, all of which will improve safety for the travelling public.

Final Plan Set

Public Informational Meeting #2 (12/2/21)

PIM #2 GRAEF Presentation
PIM #2 Handout
PIM #2 Exhibit 90% East-West (Pioneer Road) Corridor Plan
PIM #2 Exhibit 90% North-South (Wasaukee Rd) Corridor Plan
PIM #2 Exhibit Detour

Public Informational Meeting #1 (1/19/21)

PIM #1 GRAEF Presentation
60% Plans (2/15/21)
PIM #1 East-West (Pioneer Rd) Corridor Plan
PIM #1 North-South (Wasaukee Rd) Corridor Plan



CTH P Reconstruction (STH 145 to STH 60)

Washington County is planning to reconstruct CTH P from STH 145 to STH 60 in 2024. The purpose of the project is to address a deteriorating pavement structure and cross culverts, and evaluate the vertical geometry and sight distance of the roadway. Proposed improvements include reconstructing the roadway to improve vertical profiles, increase sight distances, add turn lanes, widen the paved shoulder, replace deteriorating cross culverts, and extend an existing box culvert to enhance safety and efficiency of the roadway.

The WisDOT funded project limits are from WIS 145 to approximately 300’ north of Sherman Road. The Washington County funded project limits are from approximately 300’ north of Sherman Road to WIS 60. Construction is currently scheduled for 2024. The section of County P being improved will be closed to
through traffic during construction with a posted detour. 

A public involvement meeting will be held on Thursday April 14, 2022 at the Village of Jackson Municipal Complex (N168 W19851 Main St, Jackson)  from 5:30-6:30 p.m. if you'd like to learn more about the project. 

Public Informational Meeting #1 (4/14/22)

PIM #1 Notice
PIM #1 Handout
PIM #1 Display Map - STH 145 to Western
PIM #1 Display Map - Western to Sherman
PIM #1 Display Map - Sherman to STH 60


CTH S / CTH R / STH 175 Intersections

The Washington County Highway Department held a public informational meeting on Thursday, May 26th, 2022, in the Town of Addison to present and discuss conceptual improvements to the intersections of CTH S and CTH R, CTH S and STH 175, and CTH R and STH 175. Public input was gathered in 2022 as we strive to develop a project that will serve the needs of the traveling public as well as the needs of the local community. The Public Works Committee discussed the results of the public informational meeting at their June 16, 2022 meeting. The Public Works Committee approved option A at their July 21, 2022 meeting. The County Board unanimously approved option A at their August 10, 2022 meeting Construction is scheduled for 2024.

Alternate A 

Alternate A

PIM Presentation



WisDOT Construction Projects In Washington County

For updates and information regarding WisDOT construction projects in Washington County and southeastern Wisconsin, please visit:
http://projects.511wi.gov/region/southeast/ or call 511.