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Infrastructure

SR 20, I-405, SR 9 closures update

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WSDOT announced several road closures affecting Tri-Cities area highways starting late August through early September. SR 20 near Loup Loup Pass will have reduced lanes until August 27. I-405 will see multiple lane closures including HOV lane restrictions and full lane closures from August 28 to 31.

SR 9 near Kalloch Road (MP 59) will be reduced to single lane with alternating traffic until September 14 for fish passage construction. A second SR 9 closure will alternate traffic daily through September 3 near Mount Vernon Big Lake Road. The fish passage project is ongoing at multiple locations along SR 9.

WSDOT recommends travelers plan for delays and check their website for updates. The closures are part of routine maintenance and infrastructure projects.

πŸ“„ Source: WSDOT β€” Highway Construction & Closures β€” https://wsdot.wa.gov/travel/road-construction
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  • ⚠
    WSDOT announced several road closures affecting Tri-Cities area highwaysNo usable supporting receipt β€” unverified.
  • βœ“
    The road closures will start late August through early Septemberβ€œ009: 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. ... 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. ... 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. ... 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.”
  • βœ“
    SR 20 near Loup Loup Pass will have reduced lanesβ€œ020: 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.”
  • βœ“
    SR 20 near Loup Loup Pass will have reduced lanes until August 27β€œ020: 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.”
  • βœ“
    I-405 will see multiple lane closuresβ€œ405: 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. 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. 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.”
  • ⚠
    I-405 will see HOV lane restrictionsNo usable supporting receipt β€” unverified.
  • βœ“
    I-405 will see full lane closures from August 28 to 31β€œ405: 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.”
  • βœ“
    SR 9 near Kalloch Road (MP 59) will be reduced to single lane with alternating trafficβ€œ009: 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.”
  • βœ“
    SR 9 near Kalloch Road (MP 59) will be reduced to single lane with alternating traffic until September 14β€œ009: 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.”
  • βœ“
    The closure near Kalloch Road (MP 59) is for fish passage constructionβ€œ009: 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.”
  • βœ“
    A second SR 9 closure will alternate traffic daily through September 3β€œ009: 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.”
  • βœ“
    The second SR 9 closure will be near Mount Vernon Big Lake Roadβ€œ009: 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.”
  • βœ“
    The fish passage project is ongoing at multiple locations along SR 9β€œ009: 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. ... 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.”
  • ⚠
    WSDOT recommends travelers plan for delaysNo usable supporting receipt β€” unverified.
  • ⚠
    Travelers should check their website for updatesNo usable supporting receipt β€” unverified.
  • ⚠
    The closures are part of routine maintenance and infrastructure projectsNo usable supporting receipt β€” unverified.

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