I-405, SR 155 closures impact Skagit Valley

Tuesday, July 28, 2026

2 min read

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Starting Monday, July 27, several road closures and lane restrictions will impact Skagit Valley travelers. Southbound I-405 will have up to two lanes closed nightly from 11 p.m. to 4 a.m. through July 31 between mileposts 18. 11 and 16. 45. A separate I-405 off-ramp closure will run nightly from 9 p.m. to 5 a.m. through July 29.

SR 155 remains closed from milepost 46 to 78 due to a wildfire, with no estimated reopening time. SR 527 will have its center lane closed nightly from 9 p.m. to 12 a.m. through July 30. These changes affect daily commutes and travel routes in Skagit Valley.

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

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Starting Monday, July 27, several road closures and lane restrictions will impact Skagit Valley travelersNo usable supporting receipt — unverified.
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Southbound I-405 will have up to two lanes closed nightly from 11 p.m. to 4 a.m.“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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The closure of Southbound I-405 will run through July 31“405: Up to two lanes of southbound I-405 from Lake Washington Boulevard Southeast (milepost 9) to North 30th Street (milepost 6.5) will be closed nightly, 9:30 p.m. Monday, July 27 – 5 a.m. Friday, July 31.”
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The closure of Southbound I-405 will be between mileposts 18. 11 and 16. 45“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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A separate I-405 off-ramp closure will run nightly from 9 p.m. to 5 a.m.“The southbound I-405 off-ramp to Northeast 30th Street will be closed nightly, 9 p.m. Monday, July 27 – 5 a.m. Wednesday, July 29. A signed detour will be in place.”
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The I-405 off-ramp closure will run through July 29“The southbound I-405 off-ramp to Northeast 30th Street will be closed nightly, 9 p.m. Monday, July 27 – 5 a.m. Wednesday, July 29. A signed detour will be in place.”
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SR 155 remains closed from milepost 46 to 78“155: SR 155 is closed from milepost 46, two miles north of Nespelem to milepost 78, two miles east of Omak, due to a wildfire. An estimated reopening time is not determined.”
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SR 155 remains closed due to a wildfire“155: SR 155 is closed from milepost 46, two miles north of Nespelem to milepost 78, two miles east of Omak, due to a wildfire. An estimated reopening time is not determined.”
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SR 527 will have its center lane closed nightly from 9 p.m. to 12 a.m.“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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The closure of SR 527 will run through 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.”