SR 526 - Corridor Improvements

Project news

  • WSDOT selected a preferred alternative that includes a new eastbound lane from Seaway Boulevard to I-5.

Needs & benefits

Continued economic and population growth in Everett means more vehicles are using State Route 526. We estimated around 74,000 each day pre-COVID. In 2017, the Washington State Legislature directed WSDOT to identify improvements that address a variety of issues affecting SR 526 users—from airport travelers to freight haulers. To help, WSDOT convened a project advisory group made up of representatives from the cities of Everett and Mukilteo, Snohomish County, Boeing, Community Transit, Sound Transit, Washington Trucking Association, and the Economic Alliance Snohomish County.

After considering various options through the lens of the project needs and the available budget, WSDOT selected a preferred alternative made up of several improvements:

  • A new eastbound lane between Seaway Boulevard and I-5
  • A widened Seaway Boulevard on-ramp to SR 526
  • Better signal operations at the SR 526/SR 527 intersection
  • Improvements at the SR 526 ramp to northbound I-5

Bike access and shoulder widths on the west end of SR 526, from Seaway to Evergreen, are maintained. People are not permitted to ride bikes on SR 526 east of Evergreen Way. 

These improvements will bring the following benefits to the project area:

  • Reduced travel times during the afternoon peak period and less neighborhood cut-through traffic
  • Improved freight access to and from SR 526 and the SW Everett and Paine Field/Boeing industrial areas
  • Allows for future transit, including the light rail expansion


  • 2017: Funding allocated from the Connecting Washington transportation package
  • 2018-2020: Community engagement and concept development
  • 2020-2022: Design and engineering
  • 2022-2023: Construction


Financial Data for PIN 152604K
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $0
CWA $47,197
Total $47,197


Kris Olsen

SR 526 corridor in Everett, WA at Hardeson Road