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In this update:
Plan ahead! 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.
What to expect:
- 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.
- Several construction closures and downtown sporting events are planned for Saturday evening. Plan ahead and allow extra travel time.
For questions about this work, call our 24-hour hotline at 206-319-4520, or email us at SR520bridge@wsdot.wa.gov.
Westbound SR 520 between Montlake Boulevard and I-5 closed nightly Aug. 10-13 from 11 p.m. to 5 a.m.
Crews will use this closure to restripe parts of the roadway near the exit ramps to I-5 and East Roanoke Street. All westbound SR 520 traffic from the Eastside must exit at either Montlake Boulevard or Lake Washington Boulevard while this section of SR 520 is closed. Eastbound SR 520 is not affected by this work and will remain open.
Eastbound SR 520 off-ramp to Montlake Boulevard closed nightly Aug. 11 and 12 from 10 p.m. to 6 a.m.
Crews will use this closure to restripe sections of the ramp. All traffic entering eastbound SR 520 from I-5 will pay the SR 520 Bridge toll while this ramp is closed. Drivers who do not want to pay the toll or who need to reach Montlake from I-5 must use alternate routes.
For more information about our upcoming closures, please visit our SR 520 Construction Corner.
With major vibration work complete, crews have shifted to installing rebar and pouring concrete for each bridge casing. First, crews will place rebar cages inside the installed casings. Then, they will pour concrete to fill each shaft. Crews will begin pouring concrete in the early morning to allow enough time for the concrete to cure during each work shift.
What to expect:
- Barge deliveries with large rebar cages from Kenmore to Portage Bay on weekdays.
- Daytime and nighttime construction.
Crews pour concrete in a newly installed drilled shaft.
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 14 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 continue to 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 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
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Aug. 21-24: Montlake Boulevard closed between East Hamlin Street and East Louisa Street 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.
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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.
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ِ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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