Infrastructure

I-405, SR 527 closures this week

Wednesday, July 29, 2026

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WSDOT will close lanes and ramps on I-405 and SR 527 overnight starting Monday, July 27, through July 31. The closures include southbound I-405 between mileposts 18.11 and 16.45, southbound SR 527 from 214th Street Southeast to I-405, and southbound SR 527 at 220th Street Southeast.

The closures run nightly from 9 p.m. to 4 a.m., with some ending earlier. I-90's eastbound off-ramp to 148th Avenue SE will also close nightly through July 29 for guardrail work. Detours will be posted for all closures. WSDOT notes these closures may cause delays for commuters using these routes.

Puyallup residents traveling on these highways should plan for overnight delays. The work is part of ongoing maintenance projects to improve road safety and infrastructure.

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

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WSDOT will close lanes and ramps on I-405 and SR 527 overnight starting Monday, July 27“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 closures will run through July 31“527: The right lane of southbound SR 527 at 220th Street Southeast will be closed nightly from 9 p.m. Monday, July 27 to 3 a.m. Friday, July 31.”
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The closures include southbound I-405 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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Southbound SR 527 from 214th Street Southeast to I-405 will be closed“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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Southbound SR 527 at 220th Street Southeast will be closed“527: The right lane of southbound SR 527 at 220th Street Southeast will be closed nightly from 9 p.m. Monday, July 27 to 3 a.m. Friday, July 31.”
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The closures run nightly from 9 p.m. to 4 a.m.No usable supporting receipt — unverified.
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Some closures will end earlierNo usable supporting receipt — unverified.
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I-90's eastbound off-ramp to 148th Avenue SE will also close nightlyNo usable supporting receipt — unverified.
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The closure of I-90's eastbound off-ramp to 148th Avenue SE will run through July 29“Effective: Jul 24, 2026, 10:42 AM Expected end: Jul 29, 2026, 5:00 AM”
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The closures will include guardrail workNo usable supporting receipt — unverified.
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Detours will be posted for all closuresNo usable supporting receipt — unverified.
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WSDOT notes these closures may cause delays for commuters using these routesNo usable supporting receipt — unverified.
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Puyallup residents traveling on these highways should plan for overnight delaysNo usable supporting receipt — unverified.
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The work is part of ongoing maintenance projectsNo usable supporting receipt — unverified.
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The work is part of ongoing projects to improve road safety and infrastructureNo usable supporting receipt — unverified.