I-405 and SR 9 Closures Begin Friday

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  Multiple road closures will begin in Moses Lake starting Friday, August 28, 2026No usable supporting receipt — unverified.
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  The most significant change is the closure of up to four lanes of southbound I-405No usable supporting receipt — unverified.
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  The closure of up to four lanes of southbound I-405 is from milepost 14.25 to milepost 12.5“405: Up to four lanes of southbound I-405 from milepost 14.25 to milepost 12.5 will be closed overnight, 10 p.m. Friday, Aug. 28 – 8 a.m. Saturday, Aug. 29.”
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  The closure of up to four lanes of southbound I-405 will occur overnight from 10 p.m. Friday to 8 a.m. Saturday“405: Up to four lanes of southbound I-405 from milepost 14.25 to milepost 12.5 will be closed overnight, 10 p.m. Friday, Aug. 28 – 8 a.m. Saturday, Aug. 29.”
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  Northbound I-405 will close 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 5 a.m. Monday, Aug. 31. A signed detour will be in place.”
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  The closure of northbound I-405 will occur from 11 p.m. Friday to 5 a.m. Monday“405: All lanes of northbound I-405 will close from Northeast 70th Place to Northeast 85th Street from 11 p.m. Friday Aug. 28 to 5 a.m. Monday, Aug. 31. A signed detour will be in place.”
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  A signed detour will be in place for the closure of northbound I-45No usable supporting receipt — unverified.
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  State Route 9 will be reduced to a single lane near Kalloch Road (MP 59)“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.”
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  The reduction of State Route 9 to a single lane will last through 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.”
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  The reduction of State Route 9 to a single lane is for fish passage construction“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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  State Route 9 will have another closure from 10 a.m. to 4 p.m. daily 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 additional closure of State Route 9 is just south of Mount Vernon Big Lake Road (MP 49)No usable supporting receipt — unverified.
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  WSDOT encourages drivers to expect delays during these closuresNo usable supporting receipt — unverified.
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  WSDOT encourages drivers to plan for alternate routes during these closuresNo usable supporting receipt — unverified.