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In this update:
Crews continue using vibratory hammers to install large, 12-foot diameter steel casings in Portage Bay. Below is a map showing progress as of Thursday, June 25.
Since our update last week, crews have been removing hard soils from inside the remaining casings. By removing the hard soils, we make it easier to vibrate each casing into Portage Bay.
As a reminder, we post the anticipated casing installation schedule on our Construction Corner website. We expect to complete this phase of work in early July.
Hearing noise or experiencing vibration? Call our 24/7 hotline.
We monitor noise and vibration in real-time around the project area. If you feel like you’re experiencing new or excessive noise or vibration from this work, please call the 24-hour hotline as soon as possible at 206-319-4520 so we can investigate in real time. You can also email us at sr520bridge@wsdot.wa.gov (monitored Monday through Friday, 8 a.m. to 5 p.m.).
This week, crews began installing drilled shafts near East Roanoke Street that will eventually support the future Roanoke lid.
Construction overview:
- Crews will continue using an oscillator to rotate a temporary steel casing into the ground while removing soil.
- Once excavation is complete, cranes will lift and place the rebar cage into the shaft.
- Crews will then pump concrete into the drilled shaft. Once the concrete is in place, they will remove the temporary casing using the oscillator.
Nearby neighbors will experience noise and vibration during daytime work. This phase of lid construction is expected to continue through the summer.
 Crews pour concrete for the foundation of the future Roanoke lid.
What to expect:
- Typical work hours are 7 a.m. to 10 p.m. weekdays (excluding most holidays) and 9 a.m. to 10 p.m. on weekends.
- Expect increased noise and vibration during this work from trucks and equipment.
- Flaggers on Delmar Drive East will help guide construction vehicles in and out of the work zone.
- Daytime parking restrictions (6 a.m. to 6 p.m.) remain in effect on the west side of 11th Avenue East between Delmar Drive East and East Miller Street, and on the east side of Boyer Avenue East between East Roanoke Street and Everett Avenue East.
We’ve received a lot of feedback over the past few months about vibration around the project area. We know that neighbors have a lot of questions and understandable concerns. We’ve developed a comprehensive FAQ about construction-related vibration based on questions we’ve heard from neighbors.
The FAQ includes details about:
- Protection and mitigation practices WSDOT has in place to protect infrastructure, homes and the community during and after construction.
- Vibration monitoring around the project area.
- Resources available to neighbors who believe their homes have been damaged by construction vibration.
We hope this helps address some of the community’s questions and concerns.
Join us for our next monthly construction meeting held virtually at noon on Thursday, July 23. At the meeting, you'll hear an overview of construction progress and learn about upcoming construction activities, including local street closures. Register below to attend and email sr520bridge@wsdot.wa.gov with any questions.
Missed the last Portage Bay Project monthly meeting? You can view the presentation online (PDF, 7 MB) or watch the meeting recording on YouTube.
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Updated weekly: Vibratory casing installation schedule in Portage Bay
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June 29 – July 1: Westbound SR 520 off-ramp to East Roanoke Street closed nightly
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.
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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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