Timelapse video: taking down one viaduct span

Posted on Apr 19 2019 12:17 PM

If you live, work, shop or travel along Seattle's waterfront, chances are you've stopped to watch large machinery doing downright rude things to the Alaskan Way Viaduct. Contractor Kiewit began removing the viaduct in February, producing dramatic changes along the waterfront: 

A stretch of the viaduct reduced to rubble with construction machinery atop the rubble in the middle

Above: Central waterfront demolition as of April 6, 2019

Demolition happens in a specific sequence, with the roadway deck being punched out first, then the structure's girders and columns being munched into rubble. The rubble on the ground is crunched and sorted, and then hauled away by truck. We captured a timelapse of this process from start to finish: one span being demolished over the course of about a week. 

Want to watch the process in person? Demolition will continue along Alaskan Way all spring, with active demolition typically occuring 7 a.m. - 5  p.m. on weekdays, with occasional weekend work. You can also follow the progress online via our Twitter feed, SDOT's construction cameras along Alaskan Way, our Flickr photo set, and our own construction cameras which will soon capture the work as it moves north.

Order: 3.2