Infrastructure

Tri-Cities Highway Closures Begin Aug. 4

Wednesday, August 5, 2026

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WSDOT announced multiple highway closures effective this week for construction and maintenance work. The most immediate changes begin Tuesday evening, Aug. 4, with lane closures on SR 538, I-90, and I-405.

Closures include a single-lane closure on US 97 between Wapato and Union Gap, a two-lane closure on I-90 between Eighth Avenue South and the floating bridge, and a lane shift on SR 538 for paving. Most closures will end early Wednesday morning, Aug. 5, with some extending through the week.

WSDOT advises travelers to expect delays and plan ahead. The agency provided specific dates, times, and locations for each closure, including expected end times. The longest ongoing closure is on SR 203, which will alternate traffic with flaggers from Aug. 3 through Aug. 28.

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

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WSDOT announced multiple highway closures effective this week for construction and maintenance work“WSDOT statewide highway construction and road closure updates — 8/4/2026:”
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The most immediate changes begin Tuesday evening, Aug. 4“538: From 8 p.m. Tuesday, Aug. 4 to 5 a.m. Wednesday, Aug. 5, eastbound traffic on SR 538/College Way between Leigh Way and Windsor Drive (milepost 0) will see a lane shift for maintenance paving.”
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Lane closures on SR 538, I-90, and I-405 begin Tuesday evening, Aug. 4“538: From 8 p.m. Tuesday, Aug. 4 to 5 a.m. Wednesday, Aug. 5, eastbound traffic on SR 538/College Way between Leigh Way and Windsor Drive (milepost 0) will see a lane shift for maintenance paving. 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. 405: Up to three lanes of northbound I-405 from 112th Avenue Southeast (milepost 7) to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 8:45 p.m. Tuesday, Aug. 4 – 5 a.m. Wednesday, Aug. 5.”
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Closures include a single-lane closure on US 97 between Wapato and Union Gap“097: US 97 milepost 74 to 75, between Wapato and Union Gap. Until further notice, there will be a continuous single-lane closure both directions and 10-ft width restriction for construction work.”
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Closures include a two-lane closure on I-90 between Eighth Avenue South and the floating bridge“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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Closures include a lane shift on SR 538 for paving“538: From 8 p.m. Tuesday, Aug. 4 to 5 a.m. Wednesday, Aug. 5, eastbound traffic on SR 538/College Way between Leigh Way and Windsor Drive (milepost 0) will see a lane shift for maintenance paving.”
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Most closures will end early Wednesday morning, Aug. 5No usable supporting receipt — unverified.
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Some closures will extend through the weekNo usable supporting receipt — unverified.
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WSDOT advises travelers to expect delays and plan ahead“Flaggers will direct travelers through the area. Plan ahead and expect delays of up to 20 minutes.”
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The agency provided specific dates, times, and locations for each closureNo usable supporting receipt — unverified.
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The agency provided expected end times for each closureNo usable supporting receipt — unverified.
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The longest ongoing closure is on SR 203No usable supporting receipt — unverified.
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Traffic on SR 203 will alternate with flaggers from Aug. 3 through Aug. 28“203: From 7 p.m. to 6 a.m. Sunday nights through Friday mornings crews will alternate traffic with flaggers and pilot cars in sections between a nearly 11-mile stretch of SR 203, just south of Duvall to the Monroe city limits (mileposts 12.53 to 23.20). Effective: Aug 3, 2026, 12:19 PM Expected end: Aug 28, 2026, 6:00 AM”