SR 9 lane reductions, I-5 closures for fish passage, maintenance

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  WSDOT announced multiple lane reductions and closures for construction and maintenance on several Washington state highways“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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  The closures begin on August 24, 2026“005: Nightly from 9 p.m. to 5 a.m. the next day beginning Monday, Aug. 24 to 5 a.m. Wednesday, Aug. 26, three left lanes of northbound Interstate 5 will close from State Route 526/State Route 527 (milepost 189) to Lowell Road (milepost 191) for maintenance.”
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  SR 9 will have single-lane traffic with alternating signals 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. Expect delays in the area.”
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  The single-lane traffic on SR 9 near Kalloch Road (MP 59) is 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. Expect delays in the area.”
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  The single-lane traffic on SR 9 near Kalloch Road (MP 59) 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.”
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  On SR 9 near Mount Vernon Big Lake Road (MP 49), traffic will alternate daily“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 traffic alternation on SR 9 near Mount Vernon Big Lake Road (MP 49) is from 10 a.m. to 4 p.m.“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 traffic alternation on SR 9 near Mount Vernon Big Lake Road (MP 49) is on Mondays through Thursdays“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 traffic alternation on SR 9 near Mount Vernon Big Lake Road (MP 49) is 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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  I-5 will have three northbound lanes closed nightly from August 24 to 26No usable supporting receipt — unverified.
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  The three northbound lanes closure on I-5 is between SR 526 and Lowell Road“005: Nightly from 9 p.m. to 5 a.m. the next day beginning Monday, Aug. 24 to 5 a.m. Wednesday, Aug. 26, three left lanes of northbound Interstate 5 will close from State Route 526/State Route 527 (milepost 189) to Lowell Road (milepost 191) for maintenance.”
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  I-405 will have rolling slowdowns nightly and lane closures for utility work through August 26“405: Nightly from 11:59 p.m. to 4 a.m. the next day beginning Monday, Aug. 24 to 4 a.m. Wednesday, Aug. 26, expect intermittent rolling slowdowns on both directions of Interstate 405 from Northeast 145th Street (milepost 21) to Coal Creek Parkway/Newport Way (milepost 10) for PSE utilities work.”
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  The closures impact commuters and local traffic on major routes through the regionNo usable supporting receipt — unverified.
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  WSDOT advises drivers to expect delays and plan accordingly“Expect delays in the area.”
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  All closures are scheduled to end by early SeptemberNo usable supporting receipt — unverified.
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  The SR 9 fish passage project continues 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. Expect delays in the area.”