Important update about piledriving in Portage Bay

Washington State Department of Transportation sent this bulletin at 04/11/2025 04:36 PM PDT
There is a horizontal green band that reads Rest of the West News. Above it is the letters W S D O T. An oval on the right reads state route 520.

Important update about piledriving in Portage Bay

We’re writing to update you about a temporary change to the construction schedule for the next two and a half weeks as we approach the end of season one for in-water impact piledriving. 

Due to environmental limits on in-water construction, Skanska needs to complete their first season of in-water impact piledriving by April 30 (vibratory piledriving in the water is allowed to continue year-round). To meet the April 30 deadline, Skanska received a temporary noise variance (TNV) from the city of Seattle.  

Beginning Monday, April 14, Skanska will extend its weekday piledriving by three hours in the evening. They will now drive piles from 8 a.m. until 8 p.m. There will be no change to the weekend piledriving schedule. These temporary hours will not extend beyond April 30.  

We know this is frustrating news for neighbors – and it’s also different from what we’ve communicated before. We’re extending the hours now so we can keep the project on schedule and reduce the need to piledrive in future seasons.             

What to expect 

  • Crews will work extended impact piledriving hours from 8 a.m. to 8 p.m. on weekdays (from the previous 8 a.m. to 5 p.m. window). 
  • There will be no change to the weekend impact piledriving schedule of 9 a.m. to 5 p.m. on Saturdays, Sundays and legal holidays. 

Learn more 

We encourage all affected neighbors to register for our next monthly construction update meeting on Thursday, April 17, at noon via this link https://bit.ly/portagebay-meeting where we will share more information about this schedule change. The meeting will be recorded and available online if you are unable to attend. 

Please call our 24-hour construction hotline at 206-319-4520 if you have questions. You can also email us at sr520bridge@wsdot.wa.gov.  

Construction Corner roundup

  • April 25 and 28-30: Single lane on eastbound SR 520 between I-5 and Montlake closed during daytime
  • April 26 and 27: Eastbound SR 520 off-ramp to Montlake Boulevard closed during daytime
  • May 12: Bill Dawson Trail closed until 2030
  • Ongoing: Bagley Viewpoint permanently closed

Check out the SR 520 Construction Corner map for the most up-to-date information on closures and construction impacts

How to reach us and stay informed about SR 520 construction:

  • Call or text our project-specific construction hotlines with pressing questions or concerns related to the:
    • Portage Bay Project: 206-319-4520
    • Montlake Project: 206-775-8885
    • SR 520/I-5 Connection Project: 206-316-2559 
  • Call the SR 520 Program information line (206-200-9484, M-F 8 a.m. - 5 p.m.) with general SR 520 inquiries.
  • Email SR 520 staff with your questions about the project or construction activities.
  • Visit the SR 520 Construction Corner for the most up-to-date information on closures and construction impacts.
  • Visit the SR 520 Program website to find general information about the project.
  • Email Regina Glenn, WSDOT Megaprograms Diversity and Inclusion Manager, for more information about contracting opportunities.
  • Follow us on Twitter @wsdot_520 to get key news and updates about the SR 520 program.
  • View current Montlake Project construction photos, taken continuously day and night, by mounted construction cameras
  • Share the ROTW listserv with your friends and neighbors

If you have difficulty understanding English, you may request language assistance services free of charge by calling (360) 705-7090 or emailing TitleVI@WSDOT.WA.GOV.

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Thank you for signing up for the SR 520 Rest of the West news email updates. WSDOT will keep the community informed of current and planned construction activities through these updates and the tools listed above.