Ramp Removal Work Planned for I-405 and SR 522

Closures expected over next 4 weeks as crews prepare for future construction

Published on Mar. 2, 2026

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Drivers in the Seattle area should expect closures on I-405 and SR 522 over the next four weeks as crews work to remove old ramps at the interchange. This preparatory work is being done to set the stage for future construction projects in the area.

Why it matters

The I-405/SR 522 interchange is a major transportation hub in the Seattle region, so any closures or disruptions can have significant impacts on traffic flow and commute times for many drivers. Advance notice of these closures allows people to plan ahead and find alternate routes.

The details

The ramp removal work will take place over the next four weeks and will require various lane and ramp closures on both I-405 and SR 522. Crews will be working to remove old ramps that are no longer in use in order to prepare the area for future construction projects.

  • The closures are planned to begin on February 20, 2026 and continue over the next 4 weeks.
  • Specific lane and ramp closures will vary day-to-day during this 4-week period.

The players

Washington State Department of Transportation

The state agency responsible for managing and maintaining the highway infrastructure in Washington, including I-405 and SR 522.

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What’s next

Once the ramp removal work is complete, the Washington State Department of Transportation will begin planning and preparing for future construction projects in the I-405/SR 522 interchange area.

The takeaway

This ramp removal work is an important first step in improving the I-405/SR 522 interchange, which is a critical transportation hub for the Seattle region. While the upcoming closures will cause some temporary disruptions, the long-term benefits of this preparatory work will help reduce congestion and improve traffic flow in the area.