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Lynnwood Link Extension project phases

Project phases timeline.


Icon: White check mark on a gray circle background System Planning – complete 2008

  • In November 2008, voters approve Sound Transit 2 (ST2), which includes the light rail extension from Northgate to downtown Lynnwood.
  • Commuters, community members and organizations and other stakeholders help shape the Lynnwood Link extension and other projects included in ST2.

Icon: White check mark on a gray circle background Alternatives analysis, conceptual engineering and Draft EIS – complete 2013

  • Based on results of community input received in 2011, Sound Transit Board confirms that Interstate 5 was the right corridor to study based on ridership, travel times, service levels and cost.
  • Draft Environmental Impact Statement (Draft EIS) is published followed by public comment period. After reviewing the analysis and the public input, Sound Transit Board identifies a preferred alternative and other alternatives to examine more closely.

Icon: White check mark on a gray circle background Environmental review and preliminary design – complete 2016

  • Further design for preferred alternative, coordination with agencies and jurisdictions, and environmental analysis are done.
  • Final EIS is published, responding to Draft EIS comments.
  • Board selects project to be built.
  • Record of Decision is issued by FTA.
  • Sound Transit conducts preliminary engineering for the preferred alternative and evaluates project delivery options for construction.


ICON: White star on green circle background. Final design, permitting and pre-construction work – 2016 - 2019

  • Sound Transit applied for Full Funding Grant Agreement (FFGA) from the federal government for $1.17 billion in May 2018. As a critical step in advancing this application, the Lynnwood Link Extension earns highest rating of any transit project in the country under Federal Transit Administration's rigorous rating system. 
  • Engineering and design work advances on the trackway, stations, train control systems, and public art. At key design milestones, Sound Transit engages with the public and project partners for input on a variety of project aspects including station designs and construction details.
  • Value engineering work conducted with partner jurisdictions and community involvement identifies opportunities for cost savings in light of escalating real estate values and upward market pressures on construction costs.
  • Land use, construction and other permits are obtained from partner jurisdictions.
  • Site preparation such as early demolitions and utility relocation takes place.
  • Coordination continues with federal partners to secure full $1.17 billion FFGA.
  • Project budget and schedule are established.


Construction and Testing – 2019 - 2024

  • Scheduled groundbreaking in 2019 is followed by full construction activities.  Subscribe to updates or check back for more up-to-date information.     
  • Six months or more are spent on safety and operations testing prior to service start.