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.

West Valley City Light Rail | Parametrix
West Valley City Light Rail Transit 
Salt Lake City to West Valley City, Utah
Client: ​​​​​​​​Utah Transit Authority

The West Valley Light Rail Transit project provides light rail service between West Valley City, downtown Salt Lake City, and the University of Utah. The new 5.2 mile line connects to the North-South TRAX line. We prepared an environmental study report analyzing environmental impacts and identifying mitigation measures. The project includes elevated, at-grade, and in-street running segments. It crosses a river, major rail yard, and interstate highway and it connects to a major new intermodal hub with bus. This was UTA’s first non-federal environmental review and we assisted them in refining the environmental approach and documentation requirements. This included an aggressive 8-month integrated work plan for completing environmental documentation, engineering design, and local and state jurisdictional design.



  • 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