what we do

Transportation Planning

Planning transportation improvements that
positively impact our community

Parametrix helps clients plan transportation improvements that improve livability, increase efficiency, and provide mobility choices. From comprehensive regional transportation plans to corridor studies and intersection optimization, we consider all travel modes, traffic patterns, and environmental issues to create a plan that is right for your community.

Mukilteo Ferry Terminal | Parametrix
Mukilteo Multimodal Transportation Study 
Mukilteo, Washington
Client: WSDOT

The Mukilteo Ferry Terminal is a part of the SR 525 transportation corridor that connects Whidbey Island to Seattle and Everett. It is the ferry system’s busiest route for vehicle traffic and has the second highest annual ridership. Ridership is projected to increase by more than 70 percent by 2030. Washington State Ferries is planning to relocate the terminal to improve operations, multimodal connections, and safety. Parametrix has worked with the ferry system to develop several alternatives to improve multimodal connections for pedestrians, bicyclists, bus and rail transit riders, and vehicles. Traffic impacts were analyzed at several key intersections, both for short-term construction impacts and long-term effects. We evaluated new land uses and facilities such as a shoreline promenade that could transform Mukilteo’s waterfront into a vibrant mixed-use recreation area.

  • Outstanding Achievement Award for Excellence in Environmental Document Preparation, EIS Category, FTA, 2013
  • Gold Award, ACEC Washington, 2013



  • Foothill Drive Implementation Plan | Parametrix

    Foothill Drive Implementation Plan

  • Tooele County Transportation Plan | Parametrix

    Tooele County Transportation Plan

  • Low Volume Study | Parametrix

    Low Volume / Narrow Roadway Study

  • TravelWise Program | Parametrix

    TravelWise Program

  • Parametrix Transportation Planning - Waterfront Seattle, Seattle, Washington

    Waterfront Seattle

  • Parametrix Transportation Planning - Transportation 2040, Puget Sound Region, Washington

    Transportation 2040