Infrastructure

I-405, I-5 lanes closed for overnight work

Friday, August 14, 2026

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Two sections of I-405 and I-5 will have overnight lane closures starting Monday, August 10, through Friday, August 14, according to Washington State Department of Transportation (WSDOT) public records. The I-405 closures will affect northbound lanes between mileposts 17.45 and 18.12 nightly from 8:30 p.m. to 5 a.m., with a separate notice indicating 11:30 p.m. to 4:30 a.m. for a different section. On I-5, northbound lanes will close between mileposts 252 and 254 from 6 a.m. to 10 a.m. on Saturday, August 15, and Sunday, August 16, while a southbound off-ramp to Southcenter Parkway will close nightly from 9 p.m. to 5 a.m. until August 14. The closures are part of ongoing maintenance and paving projects. The I-5 paving project near Grand Mound will have double lane closures and rest area closures from August 11 through August 29, with specific overnight hours. US 2 west of Cashmere will have single-lane closures Mondays through Thursdays until mid-to-late September for paving.

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

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Two sections of I-405 and I-5 will have overnight lane closures starting Monday, August 10“405: Monday, August 10 to the morning of Friday, August 14: Two Express Toll Lanes (ETL’s) of northbound I-405 between milepost 17.45 and milepost 18.12 will be closed, nightly from 8:30 p.m. - 5 a.m.”
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The overnight lane closures will continue through Friday, August 14“005: Nightly from 9 p.m. to 5 a.m. the next day beginning Monday, Aug. 10 to 5 a.m. Friday, Aug. 14, the northbound Interstate 5 off-ramp to northbound Southcenter Parkway (milepost 154) will close for maintenance. The off-ramp to southbound Southcenter Parkway will remain open.”
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The I-405 closures will affect northbound lanes between mileposts 17.45 and 18.12 nightly“405: Monday, August 10 to the morning of Friday, August 14: Two Express Toll Lanes (ETL’s) of northbound I-405 between milepost 17.45 and milepost 18.12 will be closed, nightly from 8:30 p.m. - 5 a.m.”
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The I-405 closures will be from 8:30 p.m. to 5 a.m.“405: Monday, August 10 to the morning of Friday, August 14: Two Express Toll Lanes (ETL’s) of northbound I-405 between milepost 17.45 and milepost 18.12 will be closed, nightly from 8:30 p.m. - 5 a.m.”
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A separate notice indicates 11:30 p.m. to 4:30 a.m. for a different sectionNo usable supporting receipt — unverified.
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On I-5, northbound lanes will close between mileposts 252 and 254No usable supporting receipt — unverified.
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The I-5 northbound lane closures will be from 6 a.m. to 10 a.m.No usable supporting receipt — unverified.
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The I-5 northbound lane closures will occur on Saturday, August 15No usable supporting receipt — unverified.
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The I-5 northbound lane closures will occur on Sunday, August 16No usable supporting receipt — unverified.
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A southbound off-ramp to Southcenter Parkway will close nightly from 9 p.m. to 5 a.m.No usable supporting receipt — unverified.
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The southbound off-ramp closure will continue until August 14No usable supporting receipt — unverified.
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The closures are part of ongoing maintenance and paving projects“005: Overnight lane and ramp closures on I-5 between Maytown Rd and Old Hwy 99 for a <a href="https://wsdot.wa.gov/construction-planning/search-projects/i-5-old-highway-99-maytown-road-paving ">paving project</a> near Grand Mound.”
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The I-5 paving project near Grand Mound will have double lane closuresNo usable supporting receipt — unverified.
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The I-5 paving project near Grand Mound will have rest area closuresNo usable supporting receipt — unverified.
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The I-5 paving project near Grand Mound will run from August 11 through August 29No usable supporting receipt — unverified.
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The I-5 paving project near Grand Mound will have specific overnight hoursNo usable supporting receipt — unverified.
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US 2 west of Cashmere will have single-lane closures Mondays through Thursdays“002: Travelers on US 2 west of Cashmere will encounter single-lane closures in both directions while crews pave the roadway from milepost 105 to 109, Mondays through Thursdays from 6 a.m. to 6 p.m. until mid-to-late September.”
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The US 2 single-lane closures will continue until mid-to-late September“002: Travelers on US 2 west of Cashmere will encounter single-lane closures in both directions while crews pave the roadway from milepost 105 to 109, Mondays through Thursdays from 6 a.m. to 6 p.m. until mid-to-late September.”
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The US 2 single-lane closures are for paving“002: Travelers on US 2 west of Cashmere will encounter single-lane closures in both directions while crews pave the roadway from milepost 105 to 109, Mondays through Thursdays from 6 a.m. to 6 p.m. until mid-to-late September.”