Skip to Main Content
logo
Sound Transit train at station with passengers boarding.Sound Transit train at station with passengers boarding.

Strengthening access to Seattle’s rail stations 

To help growing suburbs meet rising ridership demand, Sound Transit evaluated access upgrades to improve how people reach two key regional commuter rail stations. 

Client

Sound Transit

Location

Kent and Auburn, Washington

Connect with an expert

Sorenson_Tim_2021.jpg
Tim Sorenson PE
Transit & Urban Mobility Practice Leader

Sound Transit advances access solutions for growing commuter demand 

As ridership surged on Sound Transit’s Sounder commuter rail, station challenges made it difficult for new riders to reach transit. To address these barriers, Sound Transit engaged CDM Smith to evaluate alternatives for parking, pedestrian, bicycle, and transit improvements and advance the preferred concepts toward implementation. 

Evaluating station access options 

The team assessed access limitations and transit improvements so first-mile barriers could be eliminated. 

Screening sites for key constraints 

Potential parking garage sites were screened for any environmental sensitivities or historical significance. 

Front-loading actionable insights 

Teams highlighted design risks early to help fast-track decision making and avoid issues seen in earlier studies. 

Engaging stakeholders and riders 

Regular coordination with cities, transit agencies, and community groups ensured alternatives were informed by regional input. 

Through workshops, public outreach, and coordination across agencies, the project shaped a preferred package of improvements that supports transit growth in the area. CDM Smith’s planning and early risk screening positioned Sound Transit to advance environmental clearance and preliminary engineering. “We tried to front-load the planning process with as much actionable information as we could,” said Tim Sorenson, transit & urban mobility expert. 

Curious to learn more?

Connect with an expert to find out how we delivered this project.

Sorenson_Tim_2021.jpg

Tim Sorenson

Transit & Urban Mobility Practice Leader

Tim has spent more than 30 years creating sustainable, community-focused transportation solutions integrating mobility, infrastructure, and the environment.

Other projects in this region


Industrial water treatment facility with frothy liquid and clear blue sky.
Caldwell, Idaho

Meeting zero liquid discharge goals for a potato processing powerhouse

Aerial view of a long floating bridge spanning a wide body of water with urban areas on both sides.
Seattle, Washington

Tolling keeps Washington bridge afloat 

RapidRide bus to West Seattle at a downtown stop, passengers walking past.
Seattle, Washington

Reimagining mobility along a key Seattle corridor 

Glowing digital envelopes on a dark background, symbolizing email communication.

Learn more about Complete Corridors

Find out how forward-thinking communities improve mobility, promote equity and enhance resiliency through our monthly newsletter.