← The Tri-Cities Wire
Infrastructure

I-405, SR 20, SR 9 work affects Tri-Cities drivers

πŸ”Š Listen Β· narrated by Aiden

WSDOT announced multiple road closures and lane reductions affecting Tri-Cities drivers starting this week. I-405 will see nightly closures from I-5 to milepost 1.5, with two northbound lanes closed from 9 p.m. to 5 a.m. through Aug. 26. Another northbound I-405 closure will begin Aug. 28, closing up to three lanes from Northeast 85th Street to Northeast 100th Street until Aug. 31.

SR 20 near Loup Loup Pass will have pavement repairs Mondays through Thursdays until Aug. 27, causing alternating one-lane traffic. SR 211 will close both directions from milepost 13 to 15 on Aug. 25 for paving. SR 9 near Kalloch Road will operate on alternating single-lane traffic until Sept. 14 for fish passage construction, with another alternating section near Mount Vernon Big Lake Road through Sept. 3.

Drivers should plan for delays on these routes, with specific times and locations provided by WSDOT. The agency has provided project webpages for more details on the construction work.

πŸ“„ Source: WSDOT β€” Highway Construction & Closures β€” https://wsdot.wa.gov/travel/road-construction
Source receipts12 of 19 claims supported Β· 63%

Legacy automated check: the original source text was not preserved. These earlier verdicts have not passed the current publication checks and may contain errors. Source: original document β†—

  • ⚠
    WSDOT announced multiple road closures and lane reductions affecting Tri-Cities driversNo usable supporting receipt β€” unverified.
  • ⚠
    WSDOT announced multiple road closures and lane reductions affecting Tri-Cities drivers starting this weekNo usable supporting receipt β€” unverified.
  • βœ“
    I-405 will see nightly closures from I-5 to milepost 1.5β€œ405: 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.”
  • βœ“
    Two northbound lanes will be closed on I-405 from 9 p.m. to 5 a.m.β€œ405: 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.”
  • ⚠
    The I-405 closures will continue through Aug. 26No usable supporting receipt β€” unverified.
  • ⚠
    Another northbound I-405 closure will begin Aug. 28No usable supporting receipt β€” unverified.
  • βœ“
    The I-405 closure will close up to three lanes from Northeast 85th Street to Northeast 100th Streetβ€œ405: 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.”
  • ⚠
    The I-405 closure will last until Aug. 31No usable supporting receipt β€” unverified.
  • βœ“
    SR 20 near Loup Loup Pass will have pavement repairs Mondays through Thursdaysβ€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“
    The SR 20 pavement repairs will continue until Aug. 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“
    The SR 20 pavement repairs will cause alternating one-lane trafficβ€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 211 will close both directions from milepost 13 to 15 on Aug. 25β€œ211: 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.”
  • βœ“
    SR 211 closure is for pavingβ€œ211: 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”
  • βœ“
    SR 9 near Kalloch Road will operate on alternating single-lane traffic until Sept. 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. Expect delays in the area.”
  • βœ“
    The SR 9 alternating single-lane traffic 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.”
  • ⚠
    Another alternating section of SR 9 near Mount Vernon Big Lake Road will be in place through Sept. 3No usable supporting receipt β€” unverified.
  • ⚠
    Drivers should plan for delays on these routesNo usable supporting receipt β€” unverified.
  • βœ“
    WSDOT provided specific times and locations for the closures and lane reductionsβ€œ405: 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.”
  • βœ“
    WSDOT provided project webpages for more details on the construction workβ€œMore information on the <a href="https://wsdot.wa.gov/construction-planning/search-projects/sr-9-unnamed-tributaries-nookachamps-hansen-creeks-fish-passage">project webpage</a>.”

The Tri-Cities Wire is free. Get Tri-Cities's news delivered every morning.