Infrastructure

WSDOT Announces Multiple Road Closures July 27-31

Friday, July 31, 2026

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WSDOT announced multiple road closures for construction and maintenance work beginning Monday, July 27, and continuing through Friday, July 31.

Southbound I-405 will have up to two lanes closed nightly from 11 p.m. to 4 a.m. between mileposts 18.11 and 16.45. State Route 203 will have one lane closed nightly from 7 p.m. to 6 a.m. Sunday through Friday for paving between mileposts 12.53 and 23.20. State Route 96 will have alternating traffic with flaggers from 7 a.m. to 2 p.m. daily for utilities work between mileposts 4 and 6. State Route 20 will have alternating traffic with flaggers from 9 a.m. to 2:30 p.m. on July 28-30 between mileposts 79 and 82.

The closures affect travel on major routes through the region. Motorists should expect delays during the specified times. Most closures will end on July 31, except for SR 20, which ends July 30.

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

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WSDOT announced multiple road closures for construction and maintenance work“WSDOT statewide highway construction and road closure updates — 7/30/2026:”
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The road closures will begin on 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 road closures will continue through Friday, 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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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 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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State Route 203 will have one lane closed nightly from 7 p.m. to 6 a.m.No usable supporting receipt — unverified.
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State Route 203 closure will be Sunday through FridayNo usable supporting receipt — unverified.
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The closure of State Route 203 will be between mileposts 12.53 and 23.20 for paving“203: 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.”
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State Route 96 will have alternating traffic with flaggers from 7 a.m. to 2 p.m. daily“096: 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.”
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State Route 96 closure will be for utilities work“096: 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.”
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State Route 96 closure will be between mileposts 4 and 6“096: 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.”
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State Route 20 will have alternating traffic with flaggers from 9 a.m. to 2:30 p.m.“020: 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.”
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State Route 20 closure will be on July 28-30“020: 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.”
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State Route 20 closure will be between mileposts 79 and 82“020: 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.”
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The closures affect travel on major routes through the regionNo usable supporting receipt — unverified.
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Motorists should expect delays during the specified times“Flaggers and pilot cars will direct alternating traffic through the remaining open lane.”
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Most closures will end on July 31No usable supporting receipt — unverified.
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The closure of SR 20 will end on July 30“020: 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. Effective: Jul 24, 2026, 10:35 AM Expected end: Jul 30, 2026, 2:30 PM”