City Center Access Project

The City Center Access project will provide more and better connections to central gathering places and services for the growing community by strengthening traffic operations; increasing safety and efficiency for people traveling by car, transit, bike, or walking; and reducing dependency on cars by improving transit, pedestrian, and bicycle connections. Parametrix led the project through a complex planning and environmental process with a study support team including WSDOT, FHWA, the City of Federal Way, Puget Sound Regional Council, Sound Transit, King County, Pierce Transit, police, and fire stakeholders. The planning process included significant public outreach, both virtual and in-person.

The preferred alternative will modify the I-5 interchange at South 320th Street with an overcrossing at S 324th Street and extended I-5 access ramps serving S 320th and S 324th streets. The team has completed preliminary engineering and environmental documentation for the project involving a new two-lane bridge along South 324th Street over I-5, with roundabouts at the ramp terminals and bridge replacement on South 320th Street. Extensive improvements to local roads will include roundabouts, intersection modifications, road widenings, and shared-use paths and sidewalks.

“We found Parametrix to be flexible in their approach and great communicators of complex issues to a diverse study support team and the public. The team was effective at building confidence with WSDOT in our technical analyses and findings. We now have a draft ARR that has successfully been through WSDOT and the study support team for review and is in the hands of FHWA for review.”

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