Infrastructure

I-405, SR 20 closures for construction, work through Sept. 4

Sunday, August 30, 2026

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Okanogan–Omak area drivers will face multiple highway closures and lane reductions beginning late August through early September for infrastructure projects, according to Washington State Department of Transportation (WSDOT) public records.

I-405 will see southbound lane closures from milepost 12 to Coal Creek Parkway Southeast from 9 p.m. Thursday, Sept. 3, to 5 a.m. Friday, Sept. 4. Northbound I-405 will close up to three lanes from Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday, Aug. 28, to 5 a.m. Monday, Aug. 31. State Route 20 will alternate traffic with flaggers from Swin Slough Bridge to Laconner Whitney Road/Bay View Road daily except weekends through further notice.

WSDOT advises drivers to expect delays and follow detour signs. The closures are part of ongoing infrastructure work including fish passage construction near I-5 and utility work in Anacortes.

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

Checked against the public record7 of 11 claims · 64%

Every factual claim below was checked against the original public record. Source: original document ↗

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Okanogan–Omak area drivers will face multiple highway closures and lane reductions beginning late August through early September for infrastructure projects“null”
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The information is according to Washington State Department of Transportation (WSDOT) public records“null”
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I-405 will see southbound lane closures from milepost 12 to Coal Creek Parkway Southeast“405: Up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 9 p.m. Thursday, Sept. 3 – 5 a.m. Friday, Sept. 4.”
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The southbound lane closures on I-405 will occur from 9 p.m. Thursday, Sept. 3, to 5 a.m. Friday, Sept. 4“405: Up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) will be closed overnight, 9 p.m. Thursday, Sept. 3 – 5 a.m. Friday, Sept. 4.”
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Northbound I-405 will close up to three lanes from Northeast 85th Street on-ramp to Northeast 100th Street“405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 5 a.m. Monday, Aug. 31. A signed detour will be in place.”
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The northbound I-405 lane closures will occur from 11 p.m. Friday, Aug. 28, to 5 a.m. Monday, Aug. 31“405: Up to three lanes of northbound I-405 will close from the Northeast 85th Street on-ramp to Northeast 100th Street from 11 p.m. Friday Aug. 28 to 5 a.m. Monday, Aug. 31. A signed detour will be in place.”
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State Route 20 will alternate traffic with flaggers from Swin Slough Bridge to Laconner Whitney Road/Bay View Road“020: Daily (except Saturday, Sunday) beginning Aug. 21 until further notice: State Route 20 traffic will alternate with flaggers from the Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) for city Anacortes utilities work.”
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The traffic alternation on State Route 20 will occur daily except weekends through further notice“020: Daily (except Saturday, Sunday) beginning Aug. 21 until further notice: State Route 20 traffic will alternate with flaggers from the Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) for city Anacortes utilities work.”
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WSDOT advises drivers to expect delays and follow detour signs“Slow down, stay focused and watch for flaggers direction through the work zone.”
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The closures are part of ongoing infrastructure work including fish passage construction near I-5Not found in the source record — unverified.
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The closures are part of ongoing infrastructure work including utility work in Anacortes“null”