Infrastructure

I-405 and I-5 lane closures begin Monday

Thursday, August 13, 2026

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Starting Monday, August 10, two northbound I-405 lanes between mileposts 17.45 and 18.12 will close nightly from 8:30 p.m. to 5 a.m. until Friday, August 14.

I-5 will see lane closures on northbound lanes between mileposts 252 and 254 daily from 6 a.m. to 10 a.m. on August 15-16. A northbound I-5 off-ramp to Southcenter Parkway will close nightly from 9 p.m. to 5 a.m. through August 14.

Travelers should expect delays and plan ahead for these closures.

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

Source receipts7 of 9 claims supported · 78%

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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Two northbound I-405 lanes will close 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 closure of two northbound I-405 lanes will be 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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The closure of two northbound I-405 lanes will occur nightly 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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The closure of two northbound I-405 lanes will last until Friday, August 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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I-5 will see lane closures on northbound lanes between mileposts 252 and 254“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 lane closures on I-5 will occur daily from 6 a.m. to 10 a.m.No usable supporting receipt — unverified.
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The lane closures on I-5 will be on August 15-16No usable supporting receipt — unverified.
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A northbound I-5 off-ramp to Southcenter Parkway will close nightly from 9 p.m. to 5 a.m.“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 closure of the northbound I-5 off-ramp to Southcenter Parkway will last through 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. Effective: Aug 7, 2026, 10:17 AM Expected end: Aug 14, 2026, 5:00 AM”