SR 520 closing this weekend with some exceptions; more project updates

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.

In this update:


Play ball! SR 520 closing across Lake Washington this weekend, Sept. 29 – Oct. 2

Crews will close SR 520 in both directions between I-5 in Seattle and 92nd Avenue Northeast in Clyde Hill from 11:59 p.m. Friday, Sept. 29 until 5 a.m. Monday, Oct. 2 for paving activities and work near the Montlake lid.

To accommodate fans traveling to and from the final homestand of the Seattle Mariners’ regular season, crews will open a single lane in both directions of SR 520 and the associated on- and off-ramps. The lanes and ramps will be open:

  • Saturday, Sept. 30: 7 a.m. to 9 p.m.
  • Sunday, Oct. 1: 7 a.m. to 9 p.m.

Travelers are still encouraged to seek alternate routes or plan for additional congestion if taking SR 520. The SR 520 Trail will remain open throughout the weekend. 

Map shows SR 520 fully closed across Lk Washington in red  lines and green dotted line for open trail access

Update on the contract bid openings for the Portage Bay Bridge and Roanoke Lid Project

WSDOT opened bids on Sept. 13 from the two teams that submitted contract proposals for the Portage Bay Bridge and Roanoke Lid Project. The bid prices in both proposals – from Kiewit/Stacy and Witbeck, a Joint Venture; and Skanska USA Civil West – are above the $812 million engineer’s estimate we calculated in 2022 to complete the design and build the project. We announced Skanska’s proposal as having the Apparent Best Value (ABV). Their $1.375 billion price proposal exceeds the engineer’s estimate by about 70%. This cost discrepancy reflects the challenging trends in the contractor bidding environment across the state and nation, including the recent I-405 Brickyard to SR 527 Project ABV (approximately 60% above the engineer’s estimate) and Washington State Ferries’ Electrification Program (approximately 25% above the engineer’s estimate).

WSDOT has until Nov. 20 to award the contract before the teams’ proposals expire. Over the next two months we will work with the leaders of the state Legislature’s transportation committees and the Governor’s Office to assess the best course for moving forward with the project’s important safety and mobility improvements.


Summer steps forward, fall closures ahead for Montlake Project

In our Sept. 14 blog post, we shared a recap of the progress we’ve made this summer on the Montlake Project and what you can expect in the coming months.

Here’s an at-a-glance of the blog:

Overview of progress on for the program & closures through 2023. Includes txt with green graphics and a light green background

Get the latest project information on our Construction Corner webpage, and check our construction cameras for real-time progress updates.


Montlake Project online monthly meeting

We’re holding our next Montlake Project monthly meeting virtually at 12:30 p.m. Wednesday, Oct. 18. Join us to learn about current and upcoming construction activities, including planned street and highway closures. Register below to attend and participate in a Q&A.

Missed our last monthly meeting? You can view the presentation online or watch the video recording on YouTube.


Construction Corner roundup

  • Ongoing: Montlake Boulevard eastbound on-ramp closed weeknights
  • Sept. 18-28: Westbound SR 520 off-ramp to Montlake Boulevard closed overnight
  • Sept. 26-28: Roanoke St. near Montlake Blvd. closed nightly
  • Sept. 29 – Oct. 2: SR 520 closed across Lake Washington (special hours); SR 520 Trail open

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:
    • 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.

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.

한국어 - Korean
번역 서비스
영어로 소통하는 것이 불편하시다면, (360) 705-7090으로 전화하시거나 다음 이메일로
연락하셔서 무료 언어 지원 서비스를 요청하실 수 있습니다: TitleVI@WSDOT.WA.GOV.

Af-soomaaliga - Somali
Adeegyada Turjumaada
Haddii ay kugu adag tahay inaad fahamtid Ingiriisida, waxaad, bilaash, ku codsan kartaa
adeegyada caawimada luuqada adoo wacaaya (360) 705-7090 ama iimayl noogu soo dir:
TitleVI@WSDOT.WA.GOV.

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 other tools listed above.