Public Safety

I-405, I-5, I-90 closures for work

Thursday, September 3, 2026

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I-405 will have overnight lane closures from Sept. 3-4 for southbound work and nightly closures through Sept. 4 for northbound work. I-5 will have single-lane reductions nightly near Alger/Lake Samish Road through Sept. 10. I-90 will have nightly off-ramp closures through Sept. 4. The Washington State Department of Transportation (WSDOT) reported these closures for highway construction and utility work. The I-405 southbound closure affects mileposts 12 to 10, while northbound work impacts mileposts 7 to 8. 5. I-90's Factoria Boulevard off-ramp will close nightly through Sept. 4. WSDOT advises drivers to plan ahead for overnight and daily lane closures. Some closures, like I-5's single-lane reduction, will extend through Sept. 10. The agency's project webpage provides more details on the fish passage construction near exit 240.

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

Source receipts7 of 11 claims supported · 64%

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 ↗

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I-405 will have overnight lane closures from Sept. 3-4 for southbound work“405: Up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 9 p.m. Thursday, Sept. 3 – 5 a.m. Friday, Sept. 4.”
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I-405 will have nightly closures through Sept. 4 for northbound work“405: Up to two lanes of northbound I-405 from milepost 7 to milepost 8.5 will be closed nightly, 9 p.m. Monday, Aug. 31 – 4:30 a.m. Friday, Sept. 4.”
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I-5 will have single-lane reductions nightly near Alger/Lake Samish Road through Sept. 10“005: The northbound and southbound I-5 will be reduced to a single lane from 8 p.m. to 5 a.m. nightly Monday, Aug. 31, through Friday morning, Sept. 4, near Alger/Lake Samish Road (exit 240) for fish passage construction.”
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I-90 will have nightly off-ramp closures through Sept. 4“090: The eastbound I-90 off-ramp to Factoria Boulevard will be closed nightly, 9 p.m. Monday, Aug. 31 – 5 a.m. Friday, Sept. 4. A signed detour will be in place.”
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The Washington State Department of Transportation (WSDOT) reported these closures for highway construction and utility work“WSDOT statewide highway construction and road closure updates — 9/2/2026:”
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The I-405 southbound closure affects mileposts 12 to 10No usable supporting receipt — unverified.
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The I-405 northbound work impacts mileposts 7 to 8No usable supporting receipt — unverified.
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I-90's Factoria Boulevard off-ramp will close nightly through Sept. 4“090: The eastbound I-90 off-ramp to Factoria Boulevard will be closed nightly, 9 p.m. Monday, Aug. 31 – 5 a.m. Friday, Sept. 4. A signed detour will be in place.”
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WSDOT advises drivers to plan ahead for overnight and daily lane closuresNo usable supporting receipt — unverified.
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Some closures, like I-5's single-lane reduction, will extend through Sept. 10No usable supporting receipt — unverified.
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The agency's project webpage provides more details on the fish passage construction near exit 240“More information on the <a href="https://wsdot.wa.gov/construction-planning/search-projects/i-5-tributaries-friday-lake-chuckanut-creeks-fish-passage">project webpage</a>.”