Sound Transit is in the process building the University Link light rail extension, including Capitol Hill Station. Work has included: excavating the site for the underground light rail station and digging the tunnels between Capitol Hill and Pine Street with tunnel boring machines. A few major tasks are highlighted below:
Phase I: Demolition and environmental remediation
Completed in summer 2009
Construction started on Capitol Hill in February 2009 with the demolition and environmental clean-up of the site. This part of the project included: removing hazardous materials from buildings, clearing trees, demolishing and removing existing buildings.
Salvage and recycling have been a very important part of Sound Transit's work at the Capitol Hill Station site. During demolition the contractor recycled 2,890 tons of bricks, wood, metal and other building materials from Capitol Hill that would otherwise have gone to the landfill. To learn more about the salvage efforts at Capitol Hill, view our fact sheet.
Phase II: Excavation and tunneling
January 2010 – Early 2013
A portion of Denny Way between Broadway and 10th Avenue is currently closed to traffic while the station is being constructed. The street will re-open around 2015 when construction is complete.
The construction site is surrounded by wooden walls that ranged from 8 feet high facing Broadway and up to 24 feet high facing 10th Ave. Sound Transit has worked with the community to install temporary public art on the walls.
The first step was to excavate a very large pit that was used to launch the tunnel boring machines, and will eventually hold the underground station. The pit for the Capitol Hill Station is over 400 feet long, 80 feet wide and close to 70 feet deep. At the bottom of the pit is a 10 foot thick concrete slab that serves as the bottom level of the station.
The same contractor who excavated the station also dug the two tunnels between Capitol Hill and the existing Downtown Seattle Transit Tunnel.
Phase II: Station construction
In 2012, construction crews began building the internal structure of the station – floors, stairs, mezzanines, elevators, etc. – and the three above-ground entrances to the station.
An underground pedestrian tunnel will provide direct access from the west entrance (next to Seattle Central Community College) to the mezzanine level of the station. While this tunnel is under construction, a portion of Broadway will be reduced to one lane in either direction, with no on-street parking. Pedestrian tunnel construction will last approximately a year and a half.
The permanent station art will also be installed during this phase of the construction.
Want more detailed tunnel construction info? Check out our tunneling page.
Business mitigation
Sound Transit has worked closely with the Capitol Hill Chamber and business community to develop a specific business mitigation plan and strategy that meet the unique characteristics of the community. The two important elements of the plan are:
- Promoting Capitol Hill as a great place to live, work, dine, shop and visit
- Providing local businesses near or adjacent to the construction site with technical training to assist them in maintaining their customer base during construction
Visit a new community website that is part of this effort: yourcapitolhill.com
For more information please contact: Rossana Garner at 206-689-3373 or via email.