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Service alerts
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Partial service Aug 10 - 4:30 a.m.

ST Express trip cancellations | Aug 10

Routes 510, 532, 545, 550, 556, 566, 577, 590 & 594

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Bus bridge Aug 3 - 5:04 p.m.

T Line closed | 8/1 - 9/16

T Line

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Reroute Aug 9 - 9:23 p.m.

ST Express Route 535 | Reroute

Route 535

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Reroute Aug 9 - 5:03 p.m.

Downtown Bothell | 8/9 - 8/12

Route 522

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Upcoming events
Aug 10

Community Oversight Panel Meeting

Monitoring Sound Transit’s performance in meeting its public commitments. Learn…

Aug 11

System Expansion Committee meeting

The System Expansion Committee oversees projects that expand transit options in…

Aug 18

System Expansion Committee Meeting

The System Expansion Committee oversees projects that expand transit options in…

Aug 25

Board of Directors Meeting

The Board establishes policies and gives direction and oversight. It is…

Aug 28

Mariners vs. Cleveland Guardians

Ride Sounder to cheer on the Seattle Mariners at T-Mobile Park. Inbound…

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System expansion

Planning and building fast, reliable transit

New voter-approved Link light rail, Sounder train and ST Express bus rapid transit projects are underway. See how this new service can get you to your destination.

The Platform

As we prepare for 33 miles of new light rail extensions, critical maintenance and system upgrades will cause some 1 Line disruptions, including longer waits for trains and some bus shuttles temporarily replacing train service. 

We're rolling out hundreds of new on-demand bike lockers at stations throughout the region. Find out how you securely park your bike for pennies and take the train or bus from there!

Read more blog posts
Read The Platform
Get to know us

Who we are

We're connecting more people to more places. Learn about the mission and values that drive Sound Transit employees everyday.

Now hiring!

We are looking for people to help us plan, build and operate one of the largest regional transit systems in the country.

Procurement and contracts

Find open solicitations and learn more about how your business can work with Sound Transit.
Learn more about Sound Transit
Learn more about Sound Transit