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In this update:
Thank you for your patience while we worked to evaluate ways to reduce construction impacts for the Boyer Hillside regrade. We are happy to share that Skanska has been able to excavate soil faster expected. Based on this progress, along with feedback from the community, we’ve made several key adjustments to our approach. This includes streamlining phasing, eliminating nighttime work and trucking, and shortening the overall duration of the work from approximately four months down to two months.
Please check out our Portage Bay major construction updates webpage to learn more details about what’s changed and what to expect. We encourage neighbors to bookmark the page and check back periodically.
Excavation in progress on the Boyer Hillside
Parking restrictions on Boyer Avenue East
To support this work, we will be updating the hours of our current parking restrictions on both sides of Boyer Avenue East between East Roanoke Street and Portage Bayshore Condominiums. Parking will be restricted 24 hours a day, Monday through Friday, with parking allowed on the weekends.
Visit our webpage on Construction Corner for the latest information
If you have any questions about the project or construction, please call our 24/7 hotline at 206-319-4520, or send an email to SR520bridge@wsdot.wa.gov.
Heads up! Crews will fully close eastbound SR 520 from I-5 to Montlake Boulevard in Seattle from 7 p.m. on Saturday, Aug. 8, to 11 a.m. on Sunday, Aug. 9, for expansion joint repairs on SR 520.
What to know
- Westbound SR 520 and the Montlake Boulevard on-ramp to eastbound SR 520 will remain open.
- Travelers coming from I-5 who want to access eastbound SR 520 will need to use alternate routes to cross Lake Washington.
- Nearby neighbors will hear noise from construction equipment.
For questions about this work, call our 24-hour hotline at 206-319-4520, or email us at SR520bridge@wsdot.wa.gov.
Last Saturday, crews installed the final casing at bridge pier 8! This marks the completion of casing installation for bridge piers 4 through 8 for the new westbound bridge (casing installation for piers 1-3 and 9-12 will be scheduled in the future). We appreciate your patience as we wrapped up this work.
Crews are now installing rebar and pouring concrete into each casing. They’ll start this work on bridge pier 4, closest to Boyer Avenue East. Crews will need to start pouring concrete in the early morning hours (as early as 4:30 a.m. some mornings) to allow enough time for it to cure during each shift.
What to expect:
- Barge deliveries with large rebar cages from Kenmore to Portage Bay on weekdays.
- Daytime and nighttime construction.
 Rebar cages to be used in the newly installed drilled shafts
This week, crews continued installing drilled shafts near East Roanoke Street. These drilled shafts will eventually support the future Roanoke lid.
As of this week, we’ve installed 12 out of 18 drilled shafts in this area. We expect to continue this work through mid-August.
Construction overview:
- Crews will continue to use an oscillator to rotate a temporary steel casing into the ground while removing soil.
- Once crews complete excavation, cranes will lift and place the rebar cage into the shaft.
- Crews will then pump concrete into the drilled shaft. After the concrete is in place, they will remove the temporary casing using the oscillator.
Nearby neighbors will experience noise and vibration during construction. This phase of lid construction is expected to continue through the summer.
Crews get ready to pour concrete as they build the foundation for the future Roanoke lid.
What neighbors should expect:
- Drilled shaft installation between East Roanoke Street and SR 520.
- Typical work hours: 7 a.m. to 10 p.m. weekdays (excluding most holidays) and 9 a.m. to 10 p.m. on weekends.
- Increased noise and vibration from trucks and equipment.
- Flaggers on Delmar Drive East to help guide construction vehicles in and out of the work zone.
- Daytime parking restrictions (6 a.m. to 6 p.m.) 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.
Join us for our next monthly construction meeting held virtually at noon on Thursday, Aug. 20. 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, 8 MB) or watch the meeting recording on YouTube.
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Aug. 8-9: Eastbound SR 520 between I-5 and Montlake Boulevard closed overnight
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Aug. 10-13: Westbound SR 520 between Montlake Boulevard and I-5 closed nightly
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Aug. 11 and 12: Eastbound SR 520 off-ramp to Montlake Boulevard 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。
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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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