Waukesha County US 18 Improvements

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Ayres was retained to provide design and related services for the rehabilitation of 6 miles of US 18/Bluemound Road in Waukesha County.

Ayres prepared three Type 3 Transportation Management Plans (TMPs) for arterial streets; participated in public involvement and project development meetings; completed roadway design; developed construction traffic signal system timing and phasing; and prepared plans, specifications, and estimates for improvements to US 18 from Calhoun Road to 124th Street.

Traffic conditions under construction staging were evaluated using a Synchro model. This model was also used to develop the traffic signal timing parameters during construction. A study and analysis were performed to evaluate the impacts of constructing indirect left-turn treatments, similar to treatments known as Michigan Left Turns, at many of the signalized intersections along the corridor. A Synchro traffic model was used to assist in the study.

Project Information

Client's Name

Wisconsin Department of Transportation, Southeast Region


Waukesha County, WI

Primary Service

Roadway Design

Client Type

State Government