Welcome to the ST3 Plan
Note: On June 23, the Sound Transit Board approved a ST3 plan for a November ballot measure. The ST3 plan is reflected in the interactive map.
Click the lines and circles on the map to learn more about the projects included in the ST3 Plan.
The Full List tab displays all the projects contained in the plan, including those projects that cannot be shown on a map.
Projects Map
On June 23, the Sound Transit Board approved a ST3 plan for a November ballot measure. The ST3 plan is reflected in the interactive map below.
Explore each project by clicking the lines and circles on the interactive map or view a list to learn more about each one.
Projects Full List
On June 23, the Sound Transit Board approved a ST3 plan for a November ballot measure. The ST3 plan is reflected in the interactive map below.
Explore each project by clicking the lines and circles on the interactive map or view a list to learn more about each one.
ST3 Near Me
The 25-year Sound Transit 3 Plan would expand mass transit in Snohomish, King and Pierce Counties with a range of light rail, commuter rail and bus connections. Choose your starting location to view future service in your area.
ST3 Projects
Link Light Rail
Bus Rapid Transit
Sounder Rail
Proposed shoulder-running buses / speed and reliability improvements
Environmental Study
Future investment studyCurrent and Planned Service
Link Light Rail
Sounder
ST Express BusStations
New Station
New station / added parking
Improved station
Major Rail TransferKEY
- Light Rail
- Commuter Rail
- Bus
Light Rail Projects
Commuter Rail Projects
Bus Rapid Transit & Bus Projects
Other Projects
ST3 Near Me
Features
Example Transit Times
Key
Link Light Rail
Bus Rapid Transit
Sounder Rail