Hilltop T Line Extension
More than doubling the length of the T Line

Timeline and milestones

  • Voter approval

  • Milestone Target
    Identify and study routes and do early conceptual design,  get public feedback. Summer 2013—Spring 2014  
    Sound Transit Board identifies preferred alignment

    Spring 2014 

    Conduct environmental review 2014 
    Complete right of way and third party agreements March 2019 
  • Milestone Target
    Preliminary engineering completed May 2016  
    Final design completed May 2018 
  • Milestone Target
    Construction contract award August 2018 
    Groundbreaking November 2018 
    Construction complete 2022 
    Testing 2022 
  • Milestone Target
    Open to the public   2023