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West Waukesha Bypass Study

In February 2010 Waukesha County began a detailed study of the West Waukesha Bypass between Interstate 94 and WIS 59 on the west side of the City of Waukesha. The transportation improvements are being studied to address growing local and regional traffic volumes, and to enhance traffic flow and safety.

The West Waukesha Bypass has been in county and regional transportation plans for decades. In April 2009, a Memorandum of Understanding (1.34 mb PDF) was signed by Waukesha County, the City of Waukesha, the Town of Waukesha, and WisDOT, identifying the local, county, and state responsibilities for studying and possibly building the West Waukesha Bypass.

The route of the proposed bypass is shown here (998 kb PDF).

Next Steps

Waukesha County completed the West Waukesha Bypass study in January 2015. The Record of Decision was approved on January 20, 2015. The document is available on the Environmental and Technical Reports page and at the Waukesha County DPW office. The Record of Decision is the Federal Highway Administration’s final approval of the project. It represents the end of the study phase of the project. The City of Waukesha, Waukesha County and WisDOT are now in the final design phase for the entire project. There are three separate construction project contracts associated with the Waukesha Bypass project. and the City of Waukesha, Waukesha County and WisDOT are each responsible for a separate segment of the roadway. The City will design and construct the segment from Rolling Ridge Drive to Northview Road. The County will design and construct the segment from Northview Road to USH 18/Summit Avenue. WisDOT will design and construct the segment from USH 18/Summit Avenue to WIS 59.


Design will continue through 2016. Construction will begin north of Summit Avenue in 2017 and south of Summit Avenue in late 2017 or 2018. Real estate acquisition began in 2015 throughout the project corridor.

Latest News

Waukesha County Final EIS Reevaluation Approved

In late fall 2015, Waukesha County refined the design of a portion of the Pebble Creek West Alternative north and south of Sunset Drive. The design refinement, known as Rotated Pebble Creek West reduces wetland impacts south of the Wisconsin & Southern Railroad by about 2 acres while maintaining the integrity of the interior forest habitat south of Sunset Drive. This document has now been approved by FHWA and is available at the link above.

Public Involvement

A public information meeting was held on Wednesday April 6, 2016 from 4:00 - 6:30 pm in the Waukesha West High School Cafeteria, 3301 Saylesville Road, to update the public on project developments since the approval of the project's Final EIS and Record of Decision in late 2014. Representatives from the City of Waukesha, Waukesha County and WisDOT were available to present construction plans and other exhibits for their separate projects and respond to questions. The documents and exhibits can be found here. Waukesha County also provided information on the refined design of the Pebble Creek West Alternative that avoids the wetland fen immediately south of Sunset Drive and reduces the project's overall wetland impact. The meeting was an open house format with a presentation on the design refinement at 5:30 p.m. A question-and-answer session on the Final EIS reevaluation followed the presentation.

The public is encouraged to contact the following people with questions regarding the upcoming construction projects:

WIS 59 to USH 18 USH 18 to Northview Road Northview Road to Rolling Ridge Drive
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Please check this website often for the most up-to-date project news and announcements of upcoming project meetings.