Infrastructure

WSDOT Closes Lanes on I-5, I-405, SR 527

Thursday, July 30, 2026

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WSDOT began lane closures on I-5 northbound near 179th Street and on I-405 southbound starting July 29, 2026. The I-5 closure will use the right shoulder, while I-405 will close up to two lanes nightly until July 31.

SR 527 will close its center lane nightly from July 27 to July 30. SR 9 will alternate traffic at Kalloch Road and near Nooksack Road starting July 29. WSDOT advises drivers to use caution and expect delays.

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

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WSDOT began lane closures on I-5 northbound near 179th Street starting July 29, 2026“005: Maintenance on I-5 northbound from milepost 9.3 near 179th Street to milepost 11.3 near North Bound Gee Creek Rest Area will have the right shoulder closed, use caution beginning at 7:31 am on July 29, 2026 until further notice.”
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WSDOT began lane closures on I-405 southbound starting July 29, 2026“405: Up to four lanes of southbound I-405 from Southeast Eighth Street (milepost 13) to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 8 p.m. Wednesday, July 29 – 5 a.m. Thursday, July 30. Effective: Jul 29, 2026, 12:00 AM Expected end: Jul 30, 2026, 5:00 AM”
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The I-5 closure will use the right shoulderNo usable supporting receipt — unverified.
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I-405 will close up to two lanes nightly until July 31“405: Monday, July 27 to the morning of Friday, July 31: Up to two lanes of southbound I-405 between milepost 18.11 and milepost 16.45 will be closed, nightly from 11 p.m. – 4 a.m.”
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SR 527 will close its center lane nightly from July 27 to July 30“527: The center lane of southbound SR 527 from 214th Street Southeast to the southbound I-405 off-ramp will be closed nightly from 9 p.m. Monday, July 27 to 12 a.m. Thursday, July 30.”
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SR 9 will alternate traffic at Kalloch Road starting July 29“009: Northbound & southbound traffic is alternating on SR 9 at Kalloch Rd (MP 59) due to roadwork. Effective: Jul 29, 2026, 7:09 AM”
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SR 9 will alternate traffic near Nooksack Road starting July 29“009: Northbound & southbound traffic is alternating on SR 9 from just north of Nooksack Rd (MP 88) to just north of Hughes Rd (MP 90) due to roadwork. Effective: Jul 29, 2026, 6:59 AM”
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WSDOT advises drivers to use cautionNo usable supporting receipt — unverified.
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WSDOT advises drivers to expect delaysNo usable supporting receipt — unverified.