SR 520 Bridge Replacement and HOV Program - News and updates

September 21, 2021 | Rest of the West news

In this update:

Attention contractors! Join us Sept. 23-24 to learn about contracting opportunities on the Montlake project.

Looking for contracting opportunities with the SR 520 Montlake Project? You won’t want to miss these two events this Thursday and Friday with Graham Contracting, Ltd. and two of its largest subcontractors. This meeting is open to interested contractors of all sizes, from large primes to smaller minority-, veteran-, and women-owned businesses

Virtual event
8 to 10 a.m. Thursday, Sept. 23

Join Graham and its electrical subcontractor, Elcon Corp., to hear about several upcoming contracting opportunities. Register for the online event.

On site
8 to 10 a.m. Friday, Sept. 24

American Bridge will cover contracting opportunities to work on demolition of the old SR 520 west approach bridge on Union Bay, followed by a tour of the site. RSVP to Darling Nava, Diversity & Inclusion Specialist (darling@zanninc.com or 813-947-8586) for details and location.

Noisy nighttime work at Roanoke St. and Harvard Ave. intersection

Expect noisy nighttime work next week at the intersection of East Roanoke Street and Harvard Avenue East. Crews will start working at 8 p.m. Monday and Tuesday, Sept. 27 and 28, and wrap up by 5 a.m. the following days. Crews will work overnight potholing the intersection to locate utilities. To learn more about the authorized noise limits for this work, visit the SR 520 Construction Corner and read the MPPCNV for the I-5 Express Lanes Connection Project.

The following mitigation measure will be implemented:

  • Use of noise blankets, skirts, and other available means for mobile equipment to lessen noise.
  • Noise monitors will be placed in the area to track noise levels.
  • An independent noise specialist will be in the field monitoring during work hours.
  • A uniformed police officer will direct traffic through the intersection.

For more information or to contact WSDOT with concerns about nighttime noise, please call the 24-hour SR 520/I-5 construction hotline: 206-316-2559.

Construction Corner roundup

Plan ahead for upcoming closures, including directional overnight closures of SR 520 this week.

September 14, 2021 | Rest of the West news

In this update:

Nightly directional closures of SR 520 for next two weeks

Over the next two weeks, we’ll close SR 520 in one direction across Lake Washington Monday through Thursday nights, 9 p.m. to 5 a.m. Crews will use this time to work underneath the Montlake lid.

Tonight, Sept. 14, and Monday and Tuesday nights, Sept. 20 and 21: Eastbound SR 520 fully closed

Illustrative map of SR 520 eastbound lane closure between Montlake Boulevard and 92nd Avenue.

Details:

  • Note: The ramp from southbound I-5 to eastbound SR 520 will be closed from 9 p.m.tonight (9/14) to 5 a.m. tomorrow. This ramp closure will not take place the nights of Sept. 20 and 21.
  • All lanes and ramps of eastbound SR 520 will be closed between Montlake Boulevard and 92nd Avenue Northeast.
  • Eastbound traffic on SR 520 from I-5 must exit at Montlake Boulevard.
  • The SR 520 Trail will be open across Lake Washington.

Nights of Sept. 15, 16, 22 and 23: Westbound SR 520 fully closed

Illustrative map of SR 520 westbound lane closure between Montlake Boulevard and 92nd Avenue.

Details:

  • All lanes and ramps of westbound SR 520 will be closed between 92nd Avenue Northeast and Montlake Boulevard.
  • Westbound traffic on SR 520 must exit at 92nd Avenue Northeast.
  • The HOV ramp from 108th Avenue Northeast to westbound SR 520 will be closed.
  • The SR 520 Trail will be open across Lake Washington.

Construction Corner roundup

We periodically will close the highway and nearby streets in Montlake this fall as we continue working on the Montlake lid. Please check the Construction Corner map for the latest updates as you plan your routes.

September 10, 2021 | Rest of the West news

In this update:

Montlake Bridge closed this weekend, Sept. 10-13

Crews will close the Montlake Bridge to vehicles this weekend to continue much-needed repairs and upgrades to the aging structure. Bicycles and pedestrians should follow detour signs at Northeast Pacific Street or East Shelby Street to use the west sidewalk across the Montlake Cut. Bus reroutes can be found on the King County Metro website.

The bridge closure extends from 10 p.m. Friday, Sept. 10 until 5 a.m. Monday, Sept. 13.

Please note: Aside from the Montlake Bridge closure, all other streets and SR 520 ramps in Montlake will be open this weekend. We previously said that streets and ramps south of the Montlake Cut would be closed, but that work has been postponed for this weekend.

Heads up – nighttime, directional closures of SR 520 next week

Plan ahead night owls! We’re closing SR 520 in one direction next week on four successive nights. Monday through Thursday between 9 p.m. and 5 a.m., crews will close one direction of the highway to work on the underside of the Montlake lid. One thing to note: We’ll do this again over the course of four nights later this month.

Nights of Sept. 13 and 14: Eastbound SR 520 fully closed

Illustrative map of SR 520 eastbound lane closure between Montlake Boulevard and 92nd Avenue.

Details:

  • Eastbound SR 520 lanes will be closed between Montlake Boulevard and 92nd Avenue Northeast.
  • All eastbound SR 520 on- and off-ramps between Montlake Boulevard and 92nd Avenue Northeast will be closed.
  • Eastbound traffic on SR 520 from I-5 must exit at Montlake Boulevard.
  • The SR 520 Trail will be open across Lake Washington.

Nights of Sept. 15 and 16: Westbound SR 520 fully closed

Map of SR 520 westbound closure between 92nd Avenue and Montlake Boulevard.

Details:

  • Westbound SR 520 lanes will be closed between 92nd Avenue Northeast and Montlake Boulevard.
  • All westbound SR 520 on- and off-ramps between 92nd Avenue Northeast and Montlake Boulevard will be closed.
  • Westbound traffic on SR 520 must exit at 92nd Avenue Northeast.
  • The Montlake Boulevard on-ramp to eastbound SR 520 will be closed (this is a recurring weeknight closure).
  • The SR 520 Trail will be open across Lake Washington.

September 3, 2021 | Rest of the West news

In this update:

Montlake Bridge reopened this morning, weekend closures on the horizon

The Montlake Bridge reopened at 5 a.m. today to all traffic following a 26-day closure to vehicles. Crews fit A LOT of work into the closure:

  • Set up scaffolding and containment around the bridge.
  • Replaced over half of the aging and cracked steel roadway panels. Panel replacement will be completed during upcoming weekend closures.
  • Added additional steel supports below the panels to increase the lifespan of the new deck.
  • Started the mechanical rehabilitation work.
  • Repaved each end of the bridge where Montlake Boulevard meets the bridge. This involved grinding down the old pavement, making necessary concrete repairs, adding waterproof material and repaving with fresh asphalt.
Crews place new metal deck panels on the Montlake Bridge.
Crews place new metal deck panels on the Montlake Bridge.
Phase 2 of the project requires closing the bridge to vehicles over five weekends, the first of which is scheduled for the busy weekend of Sept. 10-13. These closures will occur through the fall but will not conflict with Husky football home games. Our contractor has identified the following weekends to get the work done:
  • Sept. 10-13
  • Oct. 8-11
  • Oct. 22-25
  • Oct. 29-Nov. 1
  • Nov. 19-22

We will be able to maintain sidewalk access on one side of the bridge for the first two weekends but may need to restrict some access as work progresses. We’ll provide updates through these emails and on our project webpage. This is vital preservation work for a bridge that hasn’t been significantly updated since the 1990s. We greatly appreciate everyone who has stuck out these closures and switched up how they travel through the area.

Montlake Boulevard has shifted - thanks for your cooperation

You’ll notice that Montlake Boulevard now follows a curved path across SR 520, taking vehicles onto the new lid. This will allow crews to remove the old Montlake overpass this fall, extend the lid westward, and then build a new, improved crossing. You can view our video to see the Montlake lid’s transformation.

We know it is not easy to navigate through large-scale construction with changing schedules. We will continue to keep you up to date about closures and detours.

Before and after image of Montlake Boulevard realignment on to the Montlake lid.
Crews worked around the clock Aug. 27-30 to shift Montlake Boulevard onto the new lid to make way for work on the old Montlake overpass.

August 25, 2021 | Rest of the West news

In this update:

Construction underway for SR 520/I-5 Express Lanes Connection Project

Crews hit a big milestone this week as they began construction on the SR 520/I-5 Express Lanes Connection Project! This project will provide a dedicated, reversible bus and carpool connection between SR 520 and the I-5/Mercer Street interchange via the I-5 express lanes. In the coming weeks, you’ll see crews add fencing to define work limits, implement erosion control measures, and confirm utility locations and soil conditions for the upcoming work. The bulk of construction will occur at night or off the roadway. There will be frequent evening and weekend ramp and lane closures, and lane reductions on SR 520 and the I-5 express lanes.

There are many ways to learn more about the project:

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 (206-770-3554, 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.
  • Follow us on Twitter @wsdot_520 to get key news and updates about the SR 520 program.

Get weekly updates via email

Visit the WSDOT email updates page, enter your email address, and under "Construction Reports" select one of the following:

"SR 520 Bridge Replacement and HOV Program"
The email update on the entire program, from I-5 to I-405. Includes information on highway closures, construction milestones, and upcoming public meetings.

"SR 520 Rest of the West News"
Construction is underway on our next stage of construction in Seattle -- the Montlake Project. This update focuses squarely on SR 520 construction activities and other project updates in Seattle.