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Infrastructure

I-405, SR 527 closures begin July 27

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WSDOT announced multiple highway construction and closure projects effective Monday, July 27, through the week of July 31.

Southbound I-405 will close up to two lanes nightly from 11 p.m. to 4 a.m. between mileposts 18.11 and 16.45, and again from 9:30 p.m. to 5 a.m. between mileposts 9 and 6.5. Southbound SR 527 will close its center lane nightly from 9 p.m. to midnight July 27-30. State Route 203 will close one lane nightly from 7 p.m. to 6 a.m. through July 31. State Route 96 will alternate traffic daily 7 a.m. to 2 p.m., and State Route 20 will alternate traffic daily 9 a.m. to 2:30 p.m. from July 28-30. US 2 will alternate traffic nightly from 9 p.m. to 4 a.m. through July 31. The I-5 project near Maytown Road will continue until August 8 with speed limits reduced to 55 mph.

Residents should plan for nighttime and daytime traffic changes on multiple highways. The WSDOT project webpage provides additional details for the I-5 project, but no additional details were provided for other projects in the announcement.

πŸ“„ Source: WSDOT β€” Highway Construction & Closures β€” https://wsdot.wa.gov/travel/road-construction
Source receipts17 of 20 claims supported Β· 85%

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  • βœ“
    WSDOT announced multiple highway construction and closure projects effective Monday, July 27β€œ405: 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.”
  • βœ“
    The highway construction and closure projects will continue through the week of July 31β€œ405: 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.”
  • βœ“
    Southbound I-405 will close up to two lanes nightly from 11 p.m. to 4 a.m.β€œ405: 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.”
  • βœ“
    The closure of Southbound I-405 will be between mileposts 18.11 and 16.45β€œ405: 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.”
  • βœ“
    Southbound I-405 will close up to two lanes nightly again from 9:30 p.m. to 5 a.m.β€œ405: 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.”
  • βœ“
    The closure of Southbound I-405 will be between mileposts 9 and 6.5β€œ405: 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.”
  • βœ“
    Southbound SR 527 will close its center lane nightly from 9 p.m. to midnightβ€œ527: 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.”
  • βœ“
    The closure of Southbound SR 527 will be July 27-30β€œ527: 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.”
  • βœ“
    State Route 203 will close one lane nightly from 7 p.m. to 6 a.m.β€œ203: From 7 p.m. to 6 a.m. Sunday nights through Friday mornings beginning Monday, July 27, one lane of State Route 203 will be closed for a paving project between just south of Duvall to the Monroe city limits (mileposts 12.53 to 23.20). Flaggers and pilot cars will direct alternating traffic through the remaining open lane.”
  • βœ“
    The closure of State Route 203 will be through July 31β€œ203: From 7 p.m. to 6 a.m. Sunday nights through Friday mornings beginning Monday, July 27, one lane of State Route 203 will be closed for a paving project between just south of Duvall to the Monroe city limits (mileposts 12.53 to 23.20). Flaggers and pilot cars will direct alternating traffic through the remaining open lane. Effective: Jul 24, 2026, 12:48 PM Expected end: Jul 31, 2026, 6:00 AM”
  • βœ“
    State Route 96 will alternate traffic daily 7 a.m. to 2 p.m.β€œ096: Daily from 7 a.m. to 2 p.m. beginning Monday, July 27 to 2 p.m. Friday, July 31, State Route 96 traffic will alternate with flaggers from East Lowell Larimer Road (milepost 4) to State Route 9 (milepost 6) for utilities work.”
  • ⚠
    State Route 20 will alternate traffic daily 9 a.m. to 2:30 p.m.No usable supporting receipt β€” unverified.
  • βœ“
    The traffic alternation for State Route 20 will be from July 28-30β€œ020: Daily from 9 a.m. to 2:30 p.m. beginning Tuesday, July 28 to 2:30 p.m. Thursday, July 30, State Route 20 traffic will alternate with flaggers from Lyman Hamilton Road (milepost 79) to Russell Road (milepost 82) for utilities work.”
  • βœ“
    US 2 will alternate traffic nightly from 9 p.m. to 4 a.m.β€œ002: Nightly from 9 p.m. to 4 a.m. the next day beginning Monday, July 27 to 5 a.m. Friday, July 31, US 2 traffic will alternate with flaggers from Money Creek Campground (milepost 45) to Skykomish east city limits (milepost 48) for utilities work. The shoulder of US 2 will also close.”
  • βœ“
    The traffic alternation for US 2 will be through July 31β€œ002: Nightly from 9 p.m. to 4 a.m. the next day beginning Monday, July 27 to 5 a.m. Friday, July 31, US 2 traffic will alternate with flaggers from Money Creek Campground (milepost 45) to Skykomish east city limits (milepost 48) for utilities work. The shoulder of US 2 will also close.”
  • βœ“
    The I-5 project near Maytown Road will continue until August 8β€œ005: Overnight lane and ramp closures on I-5 near Maytown Road for a paving project. Crews are working on southbound I-5 towards Old Highway 99. When finished, work will switch to the northbound direction near Grand Mound. The speed limit on I-5 will be reduced from 70 mph to 55 mph from milepost 88.9 to 95.7 when crews are working. More info on the <a href="https://wsdot.wa.gov/construction-planning/search-projects/i-5-old-highway-99-maytown-road-paving ">project webpage</a>. Effective: Jul 22, 2026, 4:52 PM Expected end: Aug 8, 2026, 6:30 AM”
  • βœ“
    The speed limits for the I-5 project near Maytown Road will be reduced to 55 mphβ€œThe speed limit on I-5 will be reduced from 70 mph to 55 mph from milepost 88.9 to 95.7 when crews are working.”
  • ⚠
    Residents should plan for nighttime and daytime traffic changes on multiple highwaysNo usable supporting receipt β€” unverified.
  • βœ“
    The WSDOT project webpage provides additional details for the I-5 projectβ€œMore info on the <a href="https://wsdot.wa.gov/construction-planning/search-projects/i-5-old-highway-99-maytown-road-paving ">project webpage</a>.”
  • ⚠
    No additional details were provided for other projects in the announcementNo usable supporting receipt β€” unverified.

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