North Sammamish Park-and-Ride

Providing transit parking for Sammamish residents
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Project map and summary

North Sammamish Park and Ride Project Map
North Sammamish Park and Ride Project Map

Project updates

Like many agencies nationwide that are balancing transit operations and mega-project capital expansions, Sound Transit faces rapidly escalating costs in nearly every area of its work. 

The “Enterprise Initiative” is Sound Transit’s comprehensive effort aimed at delivering the maximum benefits of ST3 within available financial resources. As part of this effort, the Sound Transit Board is evaluating different approaches to updating the ST3 System Plan in summer 2026, which may include new ways to build, phase, or sequence projects. 

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Overview

The North Sammamish Park-and-Ride will provide up to 200 parking spaces in the north end of the City of Sammamish. Regional transit connections will include bus service to the future Link 2 Line, serving Redmond, Bellevue, Mercer Island and Seattle.

We’ll build this lot within the Sound Transit district, along the 228th Avenue NE/Sahalee Way Northeast transit corridor, north of Southeast 8th Street. Sound Transit will determine the exact location of this facility in partnership with the City of Sammamish and King County Metro.

Project timeline

On Aug. 5, 2021, the Sound Transit Board adopted a realigned capital plan to address steeply rising construction and real estate costs affecting many voter-approved regional transit expansion projects.

The Board’s adopted plan identifies 2045 as the date we’ll open the North Sammamish Park-and-Ride, based on current revenue projections and cost and utilization estimates. This change coincides with the opening of the South Kirkland to Issaquah Link light rail extension.

We’ll track fiscal challenges very closely as we work with partner jurisdictions and stakeholders to advance this project. 

Project Benefits

  • Regional connections to existing bus service and future service to the Downtown Redmond Link Extension, to serve Redmond, Bellevue, Mercer Island and Seattle.
  • This project is a Sound Transit 3 (ST3) early deliverable, and will align with the opening of light rail service for Downtown Redmond and the Stride service; a bus rapid transit service along I-405 and SR-522 corridors.