Update 3: W Seattle Lower Bridge

W Seattle Lower Bridge machine house; west side of the Duwamish River.

Pulling together.

Swing Bridge in ‘open’ position

Today, crews repairing the West Seattle Lower Bridge are pulling electrical conduit and casings from the western bridge support machine room. They need to reach and replace damaged hydraulics that move the west side of the swing bridge–work that will take several days. The bridge is in its marine access open position, closed to vehicles, since Wednesday night.


Electrical conduit inside the west side machine house.

Pieces pulled from machine room, to reach hydraulics.

Prepping the damaged assembly for pullout.


HUGE thanks!

Thanks to all the local businesses and our greater community for helping to ensure smooth logistics. A special shout-out to the Water Taxi to and from W Seattle for deferring its regularly scheduled maintenance so that its 278-passenger boat is running to support bike commuters! It can carry 26 bikes at a time.


Improving how you get around.

Our Traffic Operations is deploying additional signage to help bikes and peds find the taxi. To get around during the repair work, consider riding the bus. Buses can hold up to 3 bikes. Check out King County’s tips for loading your bike on a bus.


Visit our What’s moving Seattle this week? blog for navigation tips. As our crews work to gain access to the damaged hydraulics, a multitude of projects and events are getting underway–including:



What you can expect:

Spokane St Swing Bridge, a.k.a. W Seattle Low-Level Bridge over the Duwamish River is out of commission while under repair.


 Detour routes are marked at the following locations:

  • Chelan Ave SW
  • 1st Ave S
  • E Marginal
  • Harbor



 Shuttle service for bike commuters continues, up to 15 passengers each trip.

 Shuttle service is available 3 – 7 PM today; arriving at each side every ~20 minutes.

 Bike Riders: Shuttle service is available at bridge approaches in Seattle and W Seattle for pickup and drop-off.

  • For those biking around the Duwamish, see the bike detour map.


Updates made available as confirmed.

Thanks for your patience!