West Seattle Bridge Program Weekly Update: Wednesday, December 29, 2021

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Winter weather response: Our crews continue to work 24/7 to respond to snow and ice and more snow expected in coming days. For winter weather resources and to stay updated, visit our Winter Weather Response webpage.

West Seattle Bridge Weekly Update

News about the week ahead for the West Seattle Bridge Program


Hydro-blasting is complete; preparing work platforms

Graphic of the high bridge repairs

Last week, crews completed the hydro-blasting work. This created access points for the work platforms to hang from and openings in the bridge deck to access the inside of the bridge.  

We’ve also been working to attach rigging that will hold the work platforms in place underneath the bridge. These components consist of 10- to 14-foot long metal cables that are being fed through the holes in the bridge deck. Next, we’ll install stairs and scaffolding inside the bridge.  

Hydro-demo holes in the bridge deck surface, which crews are using to attach rigging cables to hang work platforms.

Hydro-demo holes in the bridge deck surface, which crews are using to attach rigging cables to hang work platforms.

Once hoisted into place, work platforms will be secured using metal cable rigging, like that shown above.

Once hoisted into place, work platforms will be secured using metal cable rigging, like that shown above.

In the coming weeks, we’ll begin core drilling on the inside of the bridge at Pier 16, where we’ll install post-tensioning cables to reinforce the strength of the bridge’s concrete. We’ll also be relocating utility lines at this location to make room for the additional post-tensioning cables.  

We’re continuing to build the work platforms, which we expect to hoist up to the underside of the bridge in January. These platforms create a workspace to complete epoxy injections and carbon-fiber wrapping on the outside of the bridge.

Work platform assembly begins with the placement of metal beams.

Work platform assembly begins with the placement of metal beams.

The metal beams are fastened together to create the base for the work platforms.

The metal beams are fastened together to create the base for the work platforms.

Heads up that there may be limited weekend traffic impacts on SW Manning St and E Klickitat Ave while we raise the work platform on the east side of the bridge – stay tuned for more details about timing in future updates.


West Seattle Bridge Replacement Study is complete

We recently completed a study that examined replacement concepts once the West Seattle Bridge is due for replacement in the coming decades. We last provided an update in November, reporting on our key findings from the study, what decisions will need to be revisited in the future, and what comes next.  

graphic showing replacement study

Completing this report marks an important accomplishment in documenting the best options for where and how a future bridge replacement could fit into this important and heavily used corridor. Check out our replacement planning page for more info. 


Other news to know

  • Flip Your Trip with 4,000 of your neighbors! We know that it is rough getting around right now and we would like to help you skip the traffic and get free rides by joining the Flip Your Trip campaign. Everyone that lives or works in West Seattle, South Park or Georgetown is eligible for $25 in free rides on the water taxi, bus and even e-scooters. Not sure what travel option would work best for you? We have ongoing trainings, events and are happy to help you figure out what will work best for your commute. Sign up at FlipYourTrip.org today. 
  • Plan ahead for sports in SoDo. As more in-person sporting events return, you may see increased traffic on game days. Metro provides a wide range of transportation options and choices for King County. In addition to the region’s largest bus network, our choices include vanpools, paratransit services, and many new forms of transportation solutions. Learn more about upcoming events on the King County Metro website. 

Phone line in community languages

If you or someone you know wants to talk with us, give feedback, or could benefit from having this information read to them in another language, please call (206) 400-7511.   

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