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In this update:
Starting at 4:30 p.m. Saturday, Sept. 12, crews will close the temporary eastbound SR 520 off-ramp to Montlake Boulevard around the clock for one week. The ramp is scheduled to reopen by 8 a.m. on Saturday, Sept. 19.
During the closure, crews will remove the old eastbound SR 520 off-ramp to Montlake Boulevard to make space for another traffic shift coming in early 2027.
 What to expect:
- During this closure, travelers heading eastbound on SR 520 will not be able to exit onto Montlake Boulevard. Drivers entering eastbound SR 520 from I-5 will continue across Lake Washington and pay the SR 520 bridge toll. For information about toll payments, please visit the Good to Go! webpage, or contact customer service at 1-866-936-8246.
- Drivers wanting to get to Montlake and the University of Washington from I-5 will need to plan ahead and use alternate routes.
- The Montlake Boulevard on-ramp to eastbound SR 520 will remain open.
- Nearby neighbors will hear noise from construction equipment.
Want the rundown? Watch our video PSA, where Tony breaks down three things you need to know about the closure.
On Tuesday, Sept. 1, crews started installing piles in the water in Portage Bay using an impact hammer. Throughout the summer, crews used a vibratory hammer in the water or drove piles on land, which differs from the in-water impact piledriving now underway.
The third season of in-water impact piledriving will continue through April 30, 2027. We expect to install over 100 piles throughout Portage Bay, primarily on the northeast side between the trestle and the existing bridge.
Typical working hours will be 8 a.m. to 5 p.m. on weekdays and 9 a.m. to 5 p.m. on weekends, though we may work later into the evening if needed. If our schedule changes, we’ll send out email updates to keep you informed.
As early as Wednesday, Sept. 9, crews will begin installing approximately 11 piles in the area between Boyer Avenue East and our southwest work trestle. These piles will support our new haul road connection to and from Boyer Avenue East.
Map of current and upcoming piledriving activities
What to expect:
- Impact and vibratory piledriving on land.
- Typical work hours from 8 a.m. to 5 p.m., though some nighttime work may be needed.
- Neighbors near the work zone will notice increased noise and vibration.
If you have questions about this work or the project, please call our 24-hour hotline at 206-319-4520, or email us at SR520bridge@wsdot.wa.gov.
We enjoyed seeing all the neighbors who attended our in-person open house last week at Queen City Yacht Club! The WSDOT and Skanska teams appreciated the opportunity to meet with you and talk about current and upcoming construction.
If you missed us, don’t worry! We’ll have more opportunities to connect later this fall and will share specific dates soon.
Community members at the open house at Queen City Yacht Club.
Meet Bridgette, our newest Portage Bay Project engineer! She’s here to chew through the details and help explain what’s happening in Portage Bay.
In the first episode of Bridgette Breaks It Down, she explains how we’re building the new Portage Bay bridges in three stages while keeping traffic moving.
Watch the first episode now on X/Twitter and keep an eye out for future episodes!
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July 20 – Sept. 25: Boyer Avenue East reduced to a single lane between East Roanoke Street and Everett Avenue East (excludes weekends)
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Sept. 12-19: Eastbound SR 520 off-ramp to Montlake Boulevard closed around the clock
Check our Construction Corner map for the most up-to-date information on SR 520 closures and construction impacts.
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Call or text our project-specific construction hotlines with pressing questions or concerns related to the:
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Portage Bay Project: 206-319-4520 (24-hour hotline)
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Montlake Project: 206-200-9484, M-F 8 a.m. - 5 p.m.
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Call the SR 520 Program information line (206-200-9484, M-F 8 a.m. - 5 p.m.) with general SR 520 inquiries.
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Email SR 520 staff with your questions about the project or construction activities.
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Visit the SR 520 Construction Corner for the most up-to-date information on closures and construction impacts.
- Be sure to check out the Document Library for FAQ's and other resources including information for neighbors who believe their homes have been damaged by construction vibration.
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Visit the SR 520 Program website to find general information about the project.
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Email Regina Glenn, WSDOT Megaprograms Diversity and Inclusion Manager, for more information about contracting opportunities.
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Follow us on Twitter/X and BlueSky to get key news and updates about the SR 520 program.
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Share the ROTW listserv with your friends and neighbors.
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View construction photos taken 'round the clock by our four mounted construction cameras.
Note: We combined our two SR 520 Program email lists into one. This newsletter will focus on Portage Bay Project construction and closures while also sharing other SR 520 updates. You can manage your preferences or unsubscribe anytime.
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.
Español - Spanish servicios de traducción Aviso a personas con dominio limitado del idioma inglés: Si usted tiene alguna dificultad en entender el idioma inglés, puede, sin costo alguno, solicitar asistencia lingüística con respecto a esta información llamando al (360) 705-7090, o envíe un mensaje de correo electrónico a: TitleVI@WSDOT.WA.GOV.
中文 - Chinese 翻译服务 如果您难以理解英文，则请致电：(360) 705-7090，或给我们发送电子邮件： TitleVI@WSDOT.WA.GOV，请求获取免费语言援助服务。
tiếng Việt-Vietnamese các dịch vụ dịch thuật Nếu quý vị không hiểu tiếng Anh, quý vị có thể yêu cầu dịch vụ trợ giúp ngôn ngữ, miễn phí, bằng cách gọi số (360) 705-7090 hoặc email cho chúng tôi tại: TitleVI@WSDOT.WA.GOV.
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русский - Russian Услуги перевода Если вам трудно понимать английский язык, вы можете запросить бесплатные языковые услуги, позвонив по телефону (360) 705-7090 или написав нам на электронную почту: TitleVI@WSDOT.WA.GOV.
ِيَّة Arabic - اَلْعَ َرب خدمات الترجمة إذا كنت تجد صعوبة في فھم اللغة الإنجلیزیة، فیمكنك مجان ا طلب خدمات المساعدة اللغویة عن طریق الاتصال بالرقم .TitleVI@WSDOT.WA.GOV: الإلكتروني البرید عبر مراسلتنا أو)، 360) 705-7090
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.
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