Infrastructure

I-405, I-5, and SR 169 closures planned

Tuesday, August 11, 2026

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Two Express Toll Lanes on northbound I-405 will close nightly from August 10 to 14 between mileposts 17.45 and 18.12, WSDOT announced. The closure runs from 8:30 p.m. to 5 a.m. each night.

Northbound I-5 will have lane closures from August 15 to 16, with the Iowa Street on-ramp closed from 6 a.m. to 1 p.m. on August 15. A separate I-5 off-ramp to Southcenter Parkway will close nightly from August 10 to 14.

SR 169 will close both directions from August 17 to September 21 for fish barrier removal, with detours in place. Single-lane closures on US 2 west of Cashmere will continue through late September.

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

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Two Express Toll Lanes on northbound I-405 will close 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 closure will run from August 10 to 14“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 closure is between mileposts 17.45 and 18.12“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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WSDOT announced the closure“WSDOT statewide highway construction and road closure updates — 8/11/2026:”
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The closure runs from 8:30 p.m. to 5 a.m. each night“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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Northbound I-5 will have lane closures from August 15 to 16“005: Daily from 6 to 10 a.m. starting Saturday, Aug. 15 to Sunday, Aug. 16, the left lane of northbound Interstate 5 will be closed for maintenance between Samish Way (milepost 252) and Iowa Street (milepost 254). The Iowa Street on-ramp to northbound I-5 will close from 6 a.m. to 1 p.m. Saturday, Aug. 15.”
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The Iowa Street on-ramp will be closed from 6 a.m. to 1 p.m. on August 15“The Iowa Street on-ramp to northbound I-5 will close from 6 a.m. to 1 p.m. Saturday, Aug. 15.”
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A separate I-5 off-ramp to Southcenter Parkway will close nightlyNo usable supporting receipt — unverified.
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The off-ramp closure is from August 10 to 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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SR 169 will close both directions from August 17 to September 21“Starting at 12:01 a.m. Monday, Aug. 17, both directions of SR 169 will close between Southeast 332nd Street and Plass Road near Jones Lake for 35 days for fish barrier removal. Separate signed detours will guide people around the closure. Local access is permitted north and south of the closure, and businesses are open and accessible along SR 169. Effective: Aug 5, 2026, 11:19 AM Expected end: Sep 21, 2026, 5:00 AM”
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The closure is for fish barrier removalNo usable supporting receipt — unverified.
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Detours will be in place during the SR 169 closure“Separate signed detours will guide people around the closure.”
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Single-lane closures on US 2 west of Cashmere will continue through late September“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.”