HDR has secured a contract to support the Central Puget Sound Regional Transit Authority (Sound Transit) in the planning of the Tacoma Dome Link Extension (TDLE) project in Washington, US.

The project is slated to complete the light-rail service connection between Seattle and Tacoma in order to provide a faster transportation alternative for commuters and help reduce congestion on the roadways of the South Sound corridor.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

HDR will provide planning, preliminary engineering, environmental and public involvement services for the 9.7mi light rail transit extension project as part of the new arrangement.

The extension will feature four new transit stations, as well as a new operations and maintenance facility.

"With four new LRT stations, Sound Transit and the cities in the corridor will have a once-in-a-generation opportunity to transform station areas into vibrant new station-communities."

HDR project manager Sharon Kelly said: “With four new LRT stations, Sound Transit and the cities in the corridor will have a once-in-a-generation opportunity to transform station areas into vibrant new station-communities.

“While Sound Transit has defined a representative alignment and general station locations, we will help them refine both in ways that benefit these cities for generations.”

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

The TDLE project will continue towards the south from the Federal Way Link Extension (FWLE), while the alignment will continue through South Federal Way, Fife and East Tacoma, terminating near the Tacoma Dome transit hub.

It will also offer connections to the Tacoma Link urban rail transit system, Amtrak and Sounder commuter rail service.

Public participation is expected to be sought from various stakeholders to help finalise the plan in the near future.

The project is expected to become operational in 2030.

Railway Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Railway Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact across the defence sector.

Excellence in Action
MTR Corporation and Dragages Hong Kong triumphed in three categories – Research & Development, Environmental and Safety – for their Kwu Tung Station project . Learn how this future Northern Link–East Rail Line interchange sets new benchmarks in digital construction, decarbonisation and safety management.

Discover the Impact