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Project Update

Downtown Redmond Link Extension, Seattle, US [free access]

August 1, 2019

Developer: Central Puget Sound Regional Transit Authority (Sound Transit) is the developer.


Project Description: Extension of East Link light rail (Blue Line) to Downtown Redmond, Seattle.


Background: The project is a part of Sound Transit’s plan to build a 186-km (116-mile) long regional light rail transit (LRT) network by 2041. Other extensions to Shoreline, Mountlake Terrace, Lynnwood, Kent/Des Moines, and Federal Way are planned for operations in 2024.


The Downtown Redmond Link Extension will span 5.47 km (3.4miles), covering two stations and connecting the Redmond Technology Station on the Blue Line to downtown Redmond. It is currently in the pre-construction phase and is expected to commence passenger service in 2024.


Construction of the extension will begin in 2020 and its testing is expected to be carried out in 2023.


In August 2018, WSP USA was selected by Sound Transit to provide design–build project management services.


In July 2019, Sound Transit awarded a USD729.27million contract to the joint venture (JV) of Stacy and Witbeck / Kuney to build the Downtown Redmond Link Extension. The scope of work also includes the delivery of the train control and communications system, an overhead catenary system, traction power substations, and a 1,400-space parking garage. The Sound Transit Board further approved an allowance of up to USD50 million to fund select alternative proposals received during the procurement processes.


Project cost: The project will require an investment of USD1.41 billion. Sound Transit has also approved a USD2.9billion budget for fiscal 2019, of which around USD2.4 billion will be allocated to capital projects, including the extension of light rail transit (LRT).


Ridership: The East Link extension of the Blue Line LRT, including the Downtown Redmond Link Extension, is expected to have an estimated daily ridership between 43,000 and 52,000 passengers by 2026.


Service frequency: Four-car trains every eight minutes during peak hours.


Recent Development: