what we do


Designing sustainable transportation solutions for livable communities

Transit systems improve livability, provide affordable mobility, manage congestion, and lower energy use and greenhouse gas emissions. From initial system planning and securing environmental approvals, through design and assistance with operations, Parametrix partners with agencies on all types of transit systems—commuter rail, light rail, heavy rail, bus rapid transit, streetcar, and ferry systems. Our staff regularly coordinates with FTA and has comprehensive knowledge of the New Starts program.

Portland-Milwaukie LR | Parametrix
Portland-Milwaukie Light Rail 
Portland to Milwaukie, Oregon
Client: ​​​​​Metro & TriMet
Partner: ​David Evans & Associates

The Portland-Milwaukie Light Rail project will extend Portland’s MAX light rail system from downtown and the South Waterfront District, across the Willamette River to Southeast Portland and Milwaukie. The 7.3 mile light-rail extension features a new transit/pedestrian/bike-only bridge across the Willamette River, a critical habitat for salmon species protected under the ESA. The alignment also passes through areas with brownfields, degraded shorelines, and contaminated sediments. A detailed cumulative effects review of related projects such as trails, street, and streetcar connections to the light rail project was completed, supporting their expedited NEPA clearances. The EIS was completed in less than 3 years, with a Draft EIS in 2008, a Biological Assessment in 2009, and a Biological Opinion, Final EIS, and Record of Decision in 2010. The project includes 11 stations and 3 major park-and-rides and in-street, at-grade, and elevated sections through 8 separate neighborhoods. FTA recently authorized the Full Funding Grant Agreement, committing New Starts funding to provide 50 percent of the project’s $1.495 billion budget.  

Outstanding Achievement Award for Excellence in Environmental Document Preparation, EIS Category, FTA, 2011



  • Lynnwood Link Extension | Parametrix

    Lynnwood Link Extension

  • Portland-Milwaukie LR | Parametrix

    Portland-Milwaukie Light Rail

  • Parametrix Transit - A Line RapidRide, Tukwila to Federal Way, Washington

    A-Line RapidRide

  • Ogden/Weber State University Transit Study | Parametrix

    Ogden/Weber State University Transit Study

  • Parametrix Transit - Bus Stop ADA Enhancements, Ada County, Idaho

    Bus Stop ADA Enhancements

  • Parametrix Transit - West Valley City Light Rail Transit, Salt Lake City to West Valley City, Utah

    West Valley City Light Rail Transit


“I wanted to thank you and the Parametrix team for the outstanding support you have provided the County on the East Lake Sammamish Trial Project. Parametrix’s complete understanding of the controversies surrounding the East Lake Sammamish Trail Project, the complexities in dealing with multiple jurisdictions, and the difficulties with regard to constraints surrounding the County’s budget has been critical in Parametrix and the County’s ability to identify and quantify risks associated with the project’s cost and schedule.”

Gina Auld, King County