SR 520 Bridge Replacement and HOV Program - Videos

We produce many videos about the work happening along the SR 520 corridor. Follow the links below to navigate to YouTube playlists of SR 520 videos organized by construction project. You can also visit WSDOT's general YouTube channel.
An aerial view of a highway interchange with an arrow pointing north.

SR 520 Bridge Replacement and HOV Program
Animations of what the completed corridor will look like, simulations of the existing corridor's vulnerability to wind storms and earthquakes, historical footage, project highlight videos, public meetings, and more.


SR 520 / I-5 Express Lanes Connection Project
Videos about the latest phase of SR 520 reconstruction. This project, starting in summer 2021, will build a dedicated transit and carpool connection between SR 520 and Seattle’s South Lake Union neighborhood via the I-5 express lanes.


SR 520 Montlake Project
Videos specifically covering the work in Seattle’s Montlake neighborhood to rebuild the old eastbound SR 520 bridge and construct a new landscaped lid and transit hub  over the highway. Videos include project tours, closure information and interesting project features and construction techniques.


SR 520 West Approach Bridge North Project
Videos covering work to build a new westbound bridge between the new SR 520 floating bridge and Seattle’s Montlake neighborhood. Includes time-lapses of construction, project tours, and informational videos about project features.


SR 520 Floating Bridge and Landings Project
Videos about construction of the world’s longest floating bridge. Includes project updates, construction time-lapses, and a documentary of planning and building processes.


SR 520 Pontoon Construction Project
Videos about the pontoon construction effort in Tacoma and Aberdeen, Washington. Includes time-lapse videos of the pontoons as they are floated out into the water and transported by tugboat to Lake Washington. Also includes videos covering the concrete-cracking issue.


SR 520 Eastside Transit and HOV Project
Videos covering the expansion of the SR 520 corridor on the Eastside, from Medina to I-405. Includes time-lapse videos of work undertaken during highway closures.