Press

Press Room

Below are resources for members of the media seeking information or interviews about the Alaskan Way Viaduct Replacement Program.

Latest program news

  • Plan ahead for SR 99 closures this weekend

    Drivers should allow for extra travel time this weekend as parts of SR 99 will close through Seattle. South of the stadiums, the SR 99 Connections Project will reduce both directions of SR 99 to one lane on Saturday, June 9, so crews can dig large sign foundations for the future SR 99 tunnel.

    On Sunday, June 10, the Rock ‘n’ Roll Marathon will close all lanes of northbound SR 99 between the West Seattle Bridge and Green Lake, along with off-ramps on Interstate 5 and SR 520. These closures will last until early afternoon.

    Details for the closures:

    Saturday, June 9

    • 3 a.m. to 5 p.m. – Northbound SR 99 will be reduced to one lane between South Lander Street and Holgate Street.
    • 3 a.m. to 10 p.m. – Southbound SR 99 will be reduced to one lane between Holgate Street and South Lander Street.

    Sunday, June 10

    • 4:30 a.m. to 2:45 p.m. – All lanes and ramps of northbound SR 99 between South Spokane Street/West Seattle Bridge and West Green Lake Way will be closed.
    • 6 a.m. to 11:15 a.m.
      • The northbound I-5 off-ramp to Lakeview Boulevard will be closed.
      • Two left turn lanes on the I-5 off-ramp to Mercer Street will be closed.
      • The westbound SR 520 off-ramp to Roanoke Street/Harvard Avenue will be closed.
      • Seattle city streets are also closing for the race.


    Tools to navigate traffic
    Drivers can get real-time traffic information on their phone with the WSDOT traffic app, by tracking the WSDOT traffic Twitter feed, and get advanced information from WSDOT’s Seattle Area Construction Page. Please remember to never check your phone while driving.

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  • Temporary Alaskan Way taking shape near tunnel’s south portal

    For decades, surface Alaskan Way stretched along the downtown waterfront, connecting travelers to the waterfront piers and providing north-south passage through downtown.

    Streetview of Alaskan Way from 2008 showing western position relative to viaduct

    Alaskan Way north of Seneca Street from 2008, via Google Streetview

    Since 2011, the street has been neatly squeezed in between the Alaskan Way Viaduct’s concrete footings. It was shifted to this alignment to clear space for SR 99 tunnel and other construction along the waterfront, but this location was always meant to be temporary. Eventually, the land Alaskan Way currently occupies would need to be cleared to allow for viaduct demolition.

    With demolition now on the horizon, we’ve begun restoring the street to its traditional location. Crews will continue this work over the summer and shift the street back to the west of the viaduct later this year, before the new SR 99 tunnel opens. The preparation for this shift is becoming visible as crews rebuild the roadway.

     

    The restored Alaskan Way will look much like it did the first time around. It will generally have two lanes in each direction, providing access to Colman Dock and waterfront businesses and buildings. Near the viaduct demolition work zone, the road may be narrowed to one lane in each direction, but access to Colman Dock and other properties will always be preserved.

    This configuration will remain in place until the Waterfront Seattle Project builds a new, permanent Alaskan Way in the footprint of the viaduct.

    South portal update

    A little farther south of this stretch of new pavement, an aerial view captures work building the roadways near the tunnel’s south portal. This view from the Columbia Tower shows the alignment of ramps and roadways coming into focus.

    Aerial view of the tunnel south portal

    The future ramps at the tunnel’s south portal cross what is today southbound SR 99 (click for bigger version)

    You can watch this road work from the construction camera we have mounted atop the tunnel’s south operations building. This south portal work is part of the SR 99 Connections Project, which is currently performing utility and roadwork on East Frontage Road South, between South Royal Brougham Way and South Atlantic Street.

    Crews hope to complete as much work as possible before the tunnel is ready to open. The final ramp connections, as you can tell from that map above, will go across the SR 99 mainline. So when the tunnel is ready, we will need to close SR 99 for approximately three weeks to realign the highway and connect it to the tunnel. We do not have a date for the closure yet, but we will be able to provide notice four to six weeks in advance.
     

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    Order: 9.0

  • Kiewit wins contract to demolish the viaduct

    Today, Kiewit Infrastructure West Co. was named the apparent-best-value contractor for the project that will demolish the viaduct, decommission the Battery Street Tunnel and reconnect city surface streets just north of the new SR 99 tunnel.

    The project’s design-build contract, which includes both design and construction services, is valued at $93.7 million. Kiewit submitted the apparent-best-value bid – a combination of points received for their technical proposal and their price.

    Timelines for the work will emerge after the contract is finalized and the contractor receives approval to begin design work. After that point, WSDOT will be able to share more specifics about how demolition and decommissioning will proceed.

    Last year we combined three projects into one in order to save construction time and reduce risk, so this project entails more than just demolishing the Alaskan Way Viaduct. Kiewit will be responsible for:

    • Removing the Alaskan Way Viaduct.
    • Removing the Columbia Street and Seneca Street ramp structures.
    • Decommissioning the Battery Street Tunnel, removing utility and mechanical systems, sealing the entrances and filling the tunnel.
    • Raising Aurora Avenue North to grade between Harrison Street and Denny Way, rebuilding the street, and reconnecting Thomas and John streets across Aurora Avenue North.
    • After viaduct demolition is complete, restoring waterfront roadways, sidewalks, street lighting and other elements to a temporary condition until the City of Seattle builds the new waterfront.

    Demolition cannot start until the tunnel opens to drivers, which could be as soon as this fall.

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    Order: 9.1

  • Sprucing up the north portal

    As we’ve mentioned before, the area surrounding the SR 99 tunnel’s north portal has changed a lot over the course of the project. Nearby cranes indicate that there’s still lots of construction in the area, but Seattle Tunnel Partners’ work is beginning to wind down.

    Last month, following years of utility and other construction, STP began restoring surface streets near the north portal. This work is occurring south and west of STP’s work zone, and includes sidewalk and street restoration.

    Closeup view of two crew members installing form work on Thomas Street
    Crews set up forms in preparation for paving Thomas Street near the tunnel's north portal.

    As roadway restoration continues, crews are building the remaining section of the tunnel’s north operations building. After building out the space that previously housed the tunneling machine’s disassembly pit, crews built the framework for the tunnel’s north operations building. They’re now working on the interior of the building.

    View of the tunnel's north operations building with street restoration in front
    Crews rebuild the tunnel's north operations building behind Thomas Street restoration.

    The latest notification for street restoration is available on our construction notifications page. You can also follow progress at the north portal on our construction cameras page.

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    Order: 9.2

  • Viaduct and Battery Street Tunnel closed this Sunday morning for bike ride

    Parts of northbound SR 99 will close from 6 to 11:30 a.m. this Sunday, April 8 between South Spokane Street and Bridge Way North in Fremont. This closure is part of the Emerald City Ride. Details for the closure:

    • 6 – 11:30 a.m. - Northbound SR 99 closed between South Spokane Street and Western Avenue.
    • 6 – 9:30 a.m. - Northbound SR 99 closed between Western Avenue and Bridge Way North.


    In addition, the bike ride will close the I-5 express lanes 6:45 – 10 a.m. Follow WSDOT Traffic on Twitter for updates on highway openings.

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    Order: 9.2

  • The roads are installed – now it’s time to finish the tunnel’s smart systems

    A double-deck highway now runs end to end inside the new SR 99 tunnel. Earlier this month, contractor Seattle Tunnel Partners (STP) installed the last of the 1,152 road panels that together form the lower (northbound) roadway.

    Now crews are installing and testing the tunnel’s operational and safety systems. It’s a big job. Inside the tunnel there are:

    • More than 300 cameras to monitor traffic and security at all times as part of an incident-detection system.
    • Automatic ventilation systems designed to keep air quality and visibility high.
    • Automated sprinkler systems designed to put out a fire quickly at its source.

    Together, these systems will make the SR 99 tunnel one of the "smartest" tunnels ever built. This video explains how the critical air quality and fire safety systems work together:

    Thousands of components that make up the safety and operational systems will be tested at least three times – once to make sure they work, then to make sure they work as a system, then together with other systems to make sure all systems are integrated and functional. After the systems are all certified, STP will hand the tunnel over to the Washington State Department of Transportation so a different contractor can realign SR 99 and build the final ramp connections to and from the tunnel.

    WSDOT estimates the tunnel may open to traffic as early as this fall. Stay tuned to our website and our program Twitter account for more updates as work progresses.

    By the miles:

    The SR 99 tunnel has approximately:

    • 95 miles of electrical wiring
    • 21 miles of sprinkler pipes
    • 15 miles of lights
    • 13 miles of fiber optic cables
    • 8 miles of linear heat detectors
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Media requests

If you'd like to schedule an interview with a member of our team, please contact:

Laura Newborn
Media relations, Alaskan Way Viaduct Replacement Program 
206-805-2871
newborl@wsdot.wa.gov