Infrastructure

I-405, SR 9, I-5 closures for work

Saturday, August 29, 2026

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I-405 southbound lanes from milepost 14.25 to 12.5 close overnight Aug. 28–29. I-405 northbound lanes from Northeast 85th Street to 100th Street close Aug. 28–31. SR 9 near Kalloch Road (MP 59) reduces to one lane until Sept. 14 for fish passage work. SR 9 traffic alternates daily Sept. 3. The closures affect daily commutes and local traffic patterns. WSDOT cites fish passage construction and utility work as reasons for the changes. Detours are in place for some closures. The I-5 lane closure near Fife remains until Aug. 2027 for the Port of Tacoma Phase 2 project.

📄 Source: WSDOT — Highway Construction & Closures — https://wsdot.wa.gov/travel/road-construction

Source receipts10 of 14 claims supported · 71%

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I-405 southbound lanes from milepost 14.25 to 12.5 close overnight“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 I-405 southbound lanes is from Aug. 28–29“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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I-405 northbound lanes from Northeast 85th Street to 100th Street close“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 I-405 northbound lanes is from Aug. 28–31“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 5 a.m. Monday, Aug. 31. A signed detour will be in place.”
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SR 9 near Kalloch Road (MP 59) reduces to one lane“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 SR 9 to one lane is 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.”
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SR 9 traffic alternates dailyNo usable supporting receipt — unverified.
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The traffic alternation on SR 9 starts Sept. 3No usable supporting receipt — unverified.
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The closures affect daily commutes and local traffic patternsNo usable supporting receipt — unverified.
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WSDOT cites fish passage construction as a reason for the changes“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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WSDOT cites utility work as a reason for the changesNo usable supporting receipt — unverified.
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Detours are in place for some closures“A signed detour will be in place.”
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The I-5 lane closure near Fife remains until Aug. 2027“The right lane of northbound I-5 is closed from East 28th Street in Tacoma to 20th Street East in Fife. The lane closure will remain in place through August 2027. The off-ramp to 20th Street East is open. Work is for the City of Fife <a href="https://fifewa.gov/m/newsflash/home/detail/186">Port of Tacoma Phase 2 project</a>.”
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The I-5 lane closure near Fife is for the Port of Tacoma Phase 2 project“The right lane of northbound I-5 is closed from East 28th Street in Tacoma to 20th Street East in Fife. The lane closure will remain in place through August 2027. The off-ramp to 20th Street East is open. Work is for the City of Fife <a href="https://fifewa.gov/m/newsflash/home/detail/186">Port of Tacoma Phase 2 project</a>.”