WATCH: Crews start Alaskan Way Viaduct tear down, track their progress

    Crews begin demolition work on the old Columbia Street ramp to the Alaskan Way Viaduct. (WSDOT photo)

    SEATTLE -- Now that the new SR-99 tunnel is up and running, it's time to start taking down the Alaskan Way Viaduct.

    The first whacks of the destruction got under way around noon Friday just north of the double-decker viaduct.

    Demolition of the Columbia Street ramp to the viaduct began a couple of hours later - three days later than the original target start date of Feb. 12, due to the snowy weather.

    Each crew will only be actively demolishing one frame of the viaduct at a time - but different crews could be working on separate areas of the viaduct simultaneously.

    How crews will demolish the viaduct (WSDOT Image)

    The WSDOT has put out a handy interactive chart that will allow you to track along. (LINK TO INTERACTIVE MAP>>)

    Map showing what phases the Alaskan Way Viaduct will be demolished: (WSDOT Image)

    "The start and end dates shown include time for setting up fences, preparing the site, active demolition, and restoring the site to its previous condition," WSDOT says, adding dates shown more than two weeks in advance are estimates and "subject to change."

    Crews will continue to work south along the waterfront, hoping to wrap up in the summer. They'll then restore the area where the viaduct once stood and turn the space over to the city of Seattle's Waterfront Seattle Plan.

    You can watch the demolition take place via these WSDOT construction cameras.

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