Building the system
Learn more about how Sound Transit is building one of the largest transit systems in the country.
Creating vibrant stations
We're building welcoming stations with public art, TOD, and sustainable design.
Planning future service
As our transit system grows, it takes a lot of planning and community involvement to respond to community needs.
Innovation and technology
Read about how Sound Transit uses research, testing, and tools and services to keep our system operating for decades to come.
Explore project phases
It takes a lot of work to bring a transit project into service. Major projects often take years of public involvement, planning, engineering, and analysis. Learn about the typical life cycle of a light rail project.
Latest project updates
March 17, 2026
Federal Way Link Extension
Directional lane closures on S 272nd Street
March 12, 2026
West Seattle Link Extension