Public Safety

I-405, I-90 Closures Begin Overnight

Thursday, September 3, 2026

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Starting Thursday night, Sept. 3, up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway will close from 9 p.m. to 5 a.m. Friday, Sept. 4.

Northbound I-405 lanes will also close nightly from 9 p.m. to 4:30 a.m. through Sept. 4 near mileposts 7.5 and 11.5 to 13.7. The eastbound I-90 off-ramp to Factoria Boulevard will close nightly from 9 p.m. to 5 a.m. through Sept. 4.

WSDOT advises drivers to plan for overnight delays and follow detour signs. The closures are part of ongoing construction and repair projects, including emergency repairs on US 101 Hoh River Bridge, which will begin Sept. 14.

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

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Starting Thursday night, Sept. 3, up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway will close“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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The closure of southbound I-405 lanes will be from 9 p.m. to 5 a.m. Friday, Sept. 4No usable supporting receipt — unverified.
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Northbound I-405 lanes will also close nightly from 9 p.m. to 4:30 a.m. through Sept. 4“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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The closure of northbound I-405 lanes is near mileposts 7.5 and 11.5 to 13.7No usable supporting receipt — unverified.
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The eastbound I-90 off-ramp to Factoria Boulevard will close nightly from 9 p.m. to 5 a.m. 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.”
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WSDOT advises drivers to plan for overnight delays“Travelers will need to prepare for overnight and around-the-clock closures at the US 101 Hoh River Bridge. From Monday, Sept. 14 to Tuesday, Sept. 22, each night from 10:30 p.m. to 5:30 a.m., the US 101 Hoh River Bridge will close to all traffic for emergency repairs.”
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WSDOT advises drivers to follow detour signsNo usable supporting receipt — unverified.
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The closures are part of ongoing construction and repair projects“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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Emergency repairs on US 101 Hoh River Bridge will begin Sept. 14“101: Travelers will need to prepare for overnight and around-the-clock closures at the US 101 Hoh River Bridge. From Monday, Sept. 14 to Tuesday, Sept. 22, each night from 10:30 p.m. to 5:30 a.m., the US 101 Hoh River Bridge will close to all traffic for <a href="https://wsdot.wa.gov/construction-planning/search-projects/us-101-hoh-river-bridge-emergency-repair">emergency repairs</a>.”