I-405 and SR 9 Work to Continue Through September

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  WSDOT has announced multiple highway construction and closure projects“WSDOT statewide highway construction and road closure updates — 8/25/2026:”
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  WSDOT's projects will affect Longview and surrounding areasNo usable supporting receipt — unverified.
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  Work on the projects is scheduled through late August and early SeptemberNo usable supporting receipt — unverified.
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  Northbound I-405 will see lane closures from August 24 to 26“405: Up to two lanes of northbound I-405 from I-5 (milepost 0) to milepost 1.5 will be closed nightly, 9 p.m. Monday, Aug. 24 – 5 a.m. Wednesday, Aug. 26.”
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  Northbound I-405 will see lane closures from August 28 to 31“405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
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  The southbound HOV lane will be closed nightly through August 28“405: The HOV lane of southbound I-405 from SR 181 (milepost 1) to I-5 (milepost 0) will be closed nightly, 9:30 p.m. Monday, Aug. 24 – 5 a.m. Friday, Aug. 28.”
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  SR 9 near Kalloch Road will operate on a single lane with alternating traffic until September 14“009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 42 days, until Sept. 14 for fish passage construction. Expect delays in the area.”
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  SR 9's fish passage construction is scheduled until September 14“009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 42 days, until Sept. 14 for fish passage construction. Expect delays in the area.”
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  SR 211 will have a one-day lane closure on August 25 for paving“211: Lane Closure on SR 211 both directions at milepost Marker 13 to milepost 15 paving beginning at 6:35 am on August 25, 2026, until 8pm. Expect delays Effective: Aug 25, 2026, 6:35 AM Expected end: Aug 25, 2026, 8:00 PM”
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  Drivers should expect delays during these work periods“Travelers on SR 20 near Loup Loup Pass will encounter slowdowns and delays while contractor crews perform pavement repairs and paving throughout the pass Mondays to Thursdays from 6 a.m. to 8 p.m. until Aug. 27. Expect alternating, one-lane, two-way traffic, automatic flaggers, temporary rumble strips and reduced speed limits.”
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  Drivers should expect detours during these work periodsNo usable supporting receipt — unverified.
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  The fish passage project on SR 9 will continue with alternating traffic through September 3“009: Northbound and southbound traffic will alternate from 10 a.m. to 4 p.m. daily Mondays through Thursday through Thursday, Sept. 3, just south of Mount Vernon Big Lake Road (milepost 49) for fish passage construction. Expect delays in the area.”
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  The fish passage project on SR 9 will have specific hours of 10 a.m. to 4 p.m. on weekdays for construction work“009: Northbound and southbound traffic will alternate from 10 a.m. to 4 p.m. daily Mondays through Thursday through Thursday, Sept. 3, just south of Mount Vernon Big Lake Road (milepost 49) for fish passage construction. Expect delays in the area.”