I-405, SR 9, and SR 20 closures for construction

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  New lane closures and detours begin on I-405, SR 9, and SR 20 starting this week“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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  I-405 will see nightly closures from 9 p.m. to 5 a.m. Monday through Wednesday“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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  The closures on I-405 will occur from Aug. 24 to Aug. 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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  I-405 will have closures on northbound lanes near I-5“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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  A second closure on northbound I-405 will occur from Friday, Aug. 28, to Monday, Aug. 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 closure will be on northbound I-405 from Northeast 85th Street to Northeast 100th Street“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 I-405 HOV lane will close nightly from Monday, Aug. 24, to Friday, Aug. 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 be reduced to one lane with alternating traffic until Sept. 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 will have alternating traffic for fish passage construction“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.”
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  SR 20 near Loup Loup Pass will have alternating one-lane traffic Mondays through Thursdays“020: 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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  The alternating one-lane traffic on SR 20 will continue until Aug. 27“020: 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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  WSDOT advises travelers to expect delays“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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  WSDOT advises travelers to use detours where availableNo usable supporting receipt — unverified.
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  The full schedule and project details are available on WSDOT’s websiteNo usable supporting receipt — unverified.