Drivers Advised of Ongoing I-405 Construction Work

Weekend closures and lane restrictions continue on the Eastside and in the South Sound.

Apr. 19, 2026 at 10:07pm

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An abstract, colorful image with sweeping, blurred lines representing the motion and energy of a busy highway scene.Blurred lines of traffic and construction equipment convey the disruption and chaos of the ongoing I-405 project.Bellevue Today

The Washington State Department of Transportation (WSDOT) is continuing work on the I-405/Renton to Bellevue Widening and Express Toll Lanes project, resulting in lane closures, ramp closures, and other disruptions for drivers in the Bellevue, Newcastle, and Renton areas over the next week.

Why it matters

The I-405 corridor is a critical transportation artery for the Puget Sound region, and the ongoing construction project aims to add capacity and improve traffic flow. However, the work is causing significant delays and disruptions for commuters and travelers in the affected areas.

The details

The construction work includes installing sign structures, illumination wiring, precast barriers, noise wall panels, and performing various other tasks like grading, drainage work, and bridge work. Specific lane and ramp closures are planned for northbound and southbound I-405 in Bellevue, Newcastle, and Renton over the next week.

  • The work will take place from April 19-April 25, 2026.
  • All lanes of northbound I-405 from North Southport Drive to Coal Creek Parkway Southeast will be closed day and night on April 19.
  • All lanes of southbound I-405 from Sunset Boulevard Northeast to the SR 167 on-ramp will be closed day and night from April 24-26.

The players

Washington State Department of Transportation (WSDOT)

The state transportation agency overseeing the I-405/Renton to Bellevue Widening and Express Toll Lanes project.

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What’s next

Drivers should plan for delays and consider alternate routes during the upcoming weekend closures and lane restrictions on I-405.

The takeaway

The ongoing construction work on I-405 is necessary to improve traffic flow and capacity in the region, but it is causing significant disruptions for drivers in the short term. Travelers should closely monitor WSDOT updates and plan ahead to avoid delays.