System expansion

With voter approval in 1996, 2008 and 2016, Sound Transit is building the most ambitious transit expansion in the country.
Auburn Station Parking and Access Improvements

Status: Design phase

Improving station connections and adding parking.

View project details
Ballard Link Extension

Status: Planning phase

Fast, reliable light rail connections residential and job centers in the Chinatown-International District, downtown, Interbay, and Ballard.

View project details
Bus Base North

Status: Design phase

Adding a new bus maintenance and operations building and a parking structure for buses and other vehicles.

View project details
Downtown Redmond Link Extension

Status: Construction phase

Extending East Link to downtown Redmond.

View project details
DuPont Sounder Extension

Status: Voter approval phase

Adding two stations to the Sounder south line.

View project details
East Link Extension

Status: Construction phase

Connecting the Eastside with reliable light rail.

View project details
Edmonds and Mukilteo Stations Parking and Access Improvements

Status: Planning phase

Improving station connections and adding parking.

View project details
Everett Link Extension

Status: Planning phase

Connecting Snohomish County jobs and housing.

View project details
Federal Way Link Extension

Status: Design and construction phase

Kent Station Parking and Access Improvements

Status: Planning phase

Improving station connections and adding parking.

View project details
Lakewood Station Access Improvements

Status: Planning phase phase

Improving station connections and adding parking.

View project details
Lynnwood Link Extension

Status: Construction phase

Connecting Snohomish County with light rail.

View project details
NE 130th St Infill Station

Status: Construction phase

Adding a station to the Lynnwood Link Extension

View project details
North Sammamish Park-and-Ride

Status: Planning phase

Providing transit parking for Sammamish residents.

View project details
Operations and Maintenance Facility East

Status: Open for service phase

Maintaining the growing light rail fleet.

View project details
Operations and Maintenance Facility South

Status: Planning phase

Puyallup Station Parking and Access Improvements

Status: Open for service phase

Improving station connections and adding parking.

View project details
Sounder Maintenance Base

Status: Planning phase

Efficient maintenance of the growing Sounder fleet

View project details
Sounder South Capacity Expansion

Status: Planning phase

Improving station connections and adding parking.

View project details
South Boeing Access Road Infill Station

Status: Voter approval phase

Serving Boeing Field & north Tukwila neighborhoods

View project details
South Graham St Infill Station

Status: Voter approval phase

A new station between Columbia City and Othello

View project details
South Kirkland-Issaquah Link

Status: Voter approval phase

Connecting Eastside communities with light rail.

View project details
South Tacoma Station Access Improvements

Status: Planning phase

Improving station connections and adding parking.

View project details
Stride S1 Line

Status: Design phase

Adding new bus rapid transit service along I-405 and SR 518 between Bellevue and Burien.

View project details
Stride S2 Line

Status: Design phase

Adding new bus rapid transit service along I-405 between Lynnwood and Bellevue.

View project details
Stride S3 Line

Status: Design phase

Adding new bus rapid transit service along SR-522 and Northeast 145th Street between Shoreline and Bothell.

View project details
Sumner Station Parking and Access Improvements

Status: Design phase

Improving station connections and adding parking.

View project details
Tacoma Dome Link Extension

Status: Planning phase

Connecting to Pierce County with regional light rail.

View project details
TCC Tacoma Link Extension

Status: Voter approval phase

Extending Tacoma Link from Hilltop area to TCC.

View project details
West Seattle Link Extension

Status: Planning phase

Will provide fast, reliable light rail connections to dense residential and job centers throughout the region. 

View project details
View projects
The Platform
Transit projects are complex, expensive, and necessary in the Puget Sound. With the current size and projected growth of the Puget Sound there is no…
Affordable housing near transit can transform communities and change lives.  For Cedar Crossing residents Sofia Guia and Angel Lara, it means…
Read more blog posts
See all project blog posts
Latest project documents
Auburn Station Access Improvements

Auburn Access Improvements - Spring 2024

(PDF Document | 557kB) Updated 03/15/2024
Public outreach, West Seattle Link Extension, Link Light Rail

West Seattle Link Extension Property Owners Folio

(PDF Document | 4MB) Updated 03/14/2024
See all project documents
See all project documents