SR 520 Bridge Replacement and HOV Program - News and updates

April 19, 2019 | Rest of the West News

Preconstruction work, traffic restrictions continue the week of April 22 near SR 520 / I-5 interchange

In preparation for building a new transit and HOV connection between SR 520 and Seattle’s booming South Lake Union neighborhood, crews working for WSDOT will continue soil and geotechnical evaluations the week of April 22 near the SR 520 / I-5 interchange. Below are the traffic and neighborhood effects of this work:

  • 9 a.m. to 3 p.m. Monday, April 22, Delmar Drive lane closure: Crews will close the bicycle lane and one southbound vehicle lane on the west side of the Delmar Drive overpass. Nearby neighbors may hear drilling equipment as crews bore a hole in the roadway. Flaggers will be on hand to direct cars and bikes around the work zone. The sidewalk will remain open to pedestrians.

map of Delmar Drive traffic restriction

  • 11 p.m. Friday, April 26, to 4 a.m. Saturday, April 27, single-lane closure of the westbound SR 520 ramp to southbound I-5: Crews will close one of westbound SR 520’s two on-ramp lanes to southbound I-5. This closure will allow crews to locate underground utilities. Nearby neighbors may see lights and hear intermittent noise from pavement coring and soil excavation. This work is occurring at night to limit traffic impacts and protect the safety of workers and the traveling public. WSDOT has applied for a temporary noise variance from the city of Seattle to complete the activity. If you have a noise complaint during this nighttime work, please contact our on-call SR 520 representative at 206-200-9484.

For general information on either of these activities, please contact 206-770-3554 from 8 a.m. to 5 p.m., Monday through Friday, or email This information is also available on the SR 520 Construction Corner map.  

map of I-5 ramp lane closure

March 22, 2019 | News of the week

Montlake Market community survey report now available

You can now read the complete results of our recent public survey regarding the SR 520 Montlake Project, its possible effects on the Montlake Market, and the practicability of potentially preserving the market during upcoming SR 520 construction. The survey report - 2019 Community Survey: SR 520 Montlake Project and Montlake Market Property (pdf 3.7 mb) – includes more than 1,700 responses to an online questionnaire and more than 880 written comments from community members.

The survey was open from Jan. 30 to Feb. 14. The report includes, verbatim, all 83 pages of written comments. We want to thank everyone who took the time to provide feedback. Respondents’ questions, concerns and opinions cover a wide variety of topics and viewpoints.

We’ve provided the survey results to senior WSDOT leadership to help inform their deliberations regarding the practicability of preserving the Montlake Market building. State legislators and city of Seattle representatives also received the report.

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 expected to begin in spring 2019 on our next stage of construction in Seattle -- the Montlake Phase. This update focuses squarely on SR 520 construction activities and impacts in Seattle.