Wisconsin Department of Transportation

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WIS 164 (County J)
Slinger-Pewaukee, Washington and Waukesha counties

View SE, WIS 164 (County J) project location.
Map key - Thick orange line is the project overview/location. Blue tear drop with dot in center is the project limit.

Project location

WIS 164 (County J), in Washington and Waukesha counties.

  • I-94 to Waukesha/Washington County Line (County Q), Waukesha County
  • Waukesha/Washington County Line (County Q) to WIS 175, Washington County

Project overview

  • Traffic on WIS 164 has been studied since the 1960s. At that time traffic clearly called for a two-lane county highway. By the 1990s, population had dramatically grown in Waukesha and Washington counties.
  • More people means more cars and trucks on the highway. Traffic congestion and safety are now critical issues.
  • 2006 traffic volumes, Capitol Drive - Sussex, ranges from 13,000 - 15,400 vehicles on weekdays. Traffic, Capitol Drive - I-94, is even greater, up to 23,000 vehicles on weekdays.
  • These volumes exceed federal standards for safe and efficient travel on two-lane urban highways. Traffic is expected to continue to grow 50 percent over the next 20 years.
  • Portions of WIS 164 have steep hills, blind intersections and many access points that affect safety and traffic flow.
  • A full range of improvements to WIS 164 have been studied. Citizens and public officials were asked to review, comment on and help determine the best approaches to these improvements.

Status/phase

Study completed 2001. This project is not yet scheduled for construction but is anticipated to be when traffic volumes near the threshold for four lanes.

SSI - Project contacts Questions about the content of this page, contact:
WisDOT Southeast Region Office, ser.dtsd@dot.wi.gov
Last modified: July 30, 2013

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