Thanks for visiting the online survey! The scoping comment period ended on November 25.

An important process has been underway since October 25 to update the regional transit Long-Range Plan. This plan will provide the vision for transit expansions many years into the future.

Thank you for your help in deciding where services could expand after current voter-approved projects are complete in 2023.

What is the process?

Sound Transit will prepare a Supplemental Environmental Impact Statement (SEIS) to update the Long-Range Plan. The first step in the process, called scoping, will determine which alternatives will be studied in the SEIS. Between Oct. 25 and Nov. 25 this important process gave the public, local jurisdictions and public agencies a chance to learn more about the project, provide comments, and help Sound Transit identify and consider potential alternatives and effects on the environment.

What is the regional Long-Range Plan?

The Long-Range Plan serves as the blueprint for how the region can use mass transit expansions to protect and promote its mobility, economy and environment. Updating the plan will address how to respond to rising demand and congestion as our population grows approximately 30 percent by 2035. Future ballot measures will be shaped by the plan.

More information:

For information in alternative formats, call 1-800-201-4900 / TTY Relay: 711 or email