Infrastructure

Tri-Cities roads face multiple closures this week

Monday, August 3, 2026

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WSDOT announced multiple highway closures and lane restrictions in the Tri-Cities area for maintenance and utility work beginning August 3 and extending through August 10.

The closures include a full closure of northbound I-405 from August 7-10, a two-lane closure on I-90 from August 4-5, and a single-lane closure on SR 20 from August 4-5. Other affected routes include SR 522, SR 526, US 2, and SR 22. Each closure has specific start and end times and locations as noted in the WSDOT announcement.

WSDOT states that signed detours will be in place for the I-405 closures, and flaggers will be used for some lane restrictions. The closures are scheduled for overnight hours or specific daytime windows to minimize disruption to daily traffic patterns.

📄 Source: WSDOT — Highway Construction & Closures — https://wsdot.wa.gov/travel/road-construction

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WSDOT announced multiple highway closures and lane restrictions in the Tri-Cities areaNo usable supporting receipt — unverified.
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The closures are for maintenance and utility workNo usable supporting receipt — unverified.
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The closures will begin on August 3“002: Nightly from 9 p.m. to 5 a.m. the next morning beginning Monday, Aug. 3 to 5 a.m. Friday, Aug. 7, US 2 traffic will alternate with flaggers from Money Creek Campground (milepost 46) to Skykomish east city limits (milepost 49) for utilities work.”
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The closures will extend through August 10No usable supporting receipt — unverified.
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There is a full closure of northbound I-405 from August 7-10“405: All lanes of northbound I-405 from North Southport Drive / Northeast Sunset Boulevard to Coal Creek Parkway Southeast will be fully closed day and night, 11:30 p.m. Friday, Aug. 7 – 4 a.m. Monday, Aug. 10. A signed detour will be in place.”
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There is a two-lane closure on I-90 from August 4-5“090: From 8 p.m. Tuesday, Aug. 4 to 3 a.m. Wednesday, Aug. 5, two lanes of Interstate 90 will close in both directions between Eighth Avenue South (milepost 2) and the floating bridge (milepost 4) for maintenance.”
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There is a single-lane closure on SR 20 from August 4-5No usable supporting receipt — unverified.
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Other affected routes include SR 522No usable supporting receipt — unverified.
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Other affected routes include SR 526No usable supporting receipt — unverified.
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Other affected routes include US 2No usable supporting receipt — unverified.
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Other affected routes include SR 22No usable supporting receipt — unverified.
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Each closure has specific start and end times“522: From 8 p.m. Wednesday, Aug. 5 to 3 a.m. Thursday, Aug. 6, the right lane of northbound State Route 522 from State Route 202/132nd Avenue to the State Route 9 overpass (milepost 12-13) will close for maintenance.”
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Each closure has specific locations“522: From 8 p.m. Wednesday, Aug. 5 to 3 a.m. Thursday, Aug. 6, the right lane of northbound State Route 522 from State Route 202/132nd Avenue to the State Route 9 overpass (milepost 12-13) will close for maintenance.”
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Signed detours will be in place for the I-405 closures“405: All lanes of northbound I-405 from North Southport Drive / Northeast Sunset Boulevard to Coal Creek Parkway Southeast will be fully closed day and night, 11:30 p.m. Friday, Aug. 7 – 4 a.m. Monday, Aug. 10. A signed detour will be in place.”
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Flaggers will be used for some lane restrictionsNo usable supporting receipt — unverified.
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The closures are scheduled for overnight hoursNo usable supporting receipt — unverified.
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The closures are scheduled for specific daytime windowsNo usable supporting receipt — unverified.
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The closures are scheduled to minimize disruption to daily traffic patternsNo usable supporting receipt — unverified.