Infrastructure

SR 9 traffic alternating at Nelson Rd

Tuesday, August 11, 2026

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Northbound and southbound traffic on State Route 9 at Nelson Road (milepost 76) will alternate due to roadwork starting Monday, Aug. 10, according to WSDOT.

WSDOT also announced several other road closures this week, including nightly closures on I-5, SR 169, SR 96, SR 20, I-405, US 97, and US 12. Most closures will end by Friday, Aug. 14, except for SR 169, which will close for 35 days starting Aug. 17.

Drivers should expect delays and follow detour signs. WSDOT advises planning ahead for travel during these closures.

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

Source receipts7 of 15 claims supported · 47%

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Northbound and southbound traffic on State Route 9 at Nelson Road will alternate due to roadwork“009: Northbound & southbound traffic is alternating on SR 9 at Nelson Rd (MP 76) just north of Upper Samish Rd (MP 74) due to roadwork.”
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The roadwork on State Route 9 at Nelson Road will start on Monday, Aug. 10“009: Northbound & southbound traffic is alternating on SR 9 at Nelson Rd (MP 76) just north of Upper Samish Rd (MP 74) due to roadwork. Effective: Aug 10, 2026, 8:35 AM”
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WSDOT announced several other road closures this weekNo usable supporting receipt — unverified.
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Nightly closures on I-5 will occurNo usable supporting receipt — unverified.
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Nightly closures on SR 169 will occurNo usable supporting receipt — unverified.
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Nightly closures on SR 96 will occur“096: Daily from 7 a.m. to 2 p.m. beginning Monday, Aug. 10 to 2 p.m. Friday, Aug. 14, State Route 96 traffic will alternate with flaggers from East Lowell Larimer Road (milepost 5) to Lark Dairy Farm (milepost 6) for utilities work.”
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Nightly closures on SR 20 will occur“020: Nightly from 8:30 p.m. to 5 a.m. the next day beginning Sunday, Aug. 9 to 5 a.m. Wednesday, Aug. 12, State Route 20/North Cascades Highway traffic will alternate with flaggers and shift into the turn lane between Peacock Lane (milepost 61) and Vista View Drive (milepost 62) for maintenance.”
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Nightly closures on I-405 will occur“405: Up to two lanes of southbound I-405 from Lake Washington Boulevard Southeast (milepost 9) to milepost 6 will be closed nightly, 9:30 p.m. Monday, Aug. 10 to 5 a.m. Wednesday, Aug. 12.”
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Nightly closures on US 97 will occurNo usable supporting receipt — unverified.
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Nightly closures on US 12 will occurNo usable supporting receipt — unverified.
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Most closures will end by Friday, Aug. 14No usable supporting receipt — unverified.
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SR 169 will close for 35 days starting Aug. 17“169: Starting at 12:01 a.m. Monday, Aug. 17, both directions of SR 169 will close between Southeast 332nd Street and Plass Road near Jones Lake for 35 days for fish barrier removal.”
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Drivers should expect delays“Travelers will follow flaggers direction through the work zone.”
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Drivers should follow detour signsNo usable supporting receipt — unverified.
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WSDOT advises planning ahead for travel during these closuresNo usable supporting receipt — unverified.