Public Safety

I-405, I-90, SR 20 closures for construction

Friday, September 4, 2026

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Okanogan–Omak area highways face multiple overnight closures through Sept. 4 for construction and maintenance work, according to Washington State Department of Transportation (WSDOT) records. The closures include southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) and northbound I-405 from milepost 7 to milepost 8. 5, both closing nightly from 9 p.m. to 5 a.m.

State Route 20 will alternate traffic with flaggers from Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) daily except weekends for city Anacortes utilities work. SR 9 near Kalloch Road (MP 59) is reduced to a single lane with alternating traffic through a bypass road until Sept. 24 for fish passage construction. I-5 near Alger/Lake Samish Road (exit 240) will be reduced to a single lane nightly from 8 p.m. to 5 a.m. through Sept. 4 for fish passage work.

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

Checked against the public record9 of 12 claims · 75%

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

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Okanogan–Omak area highways face multiple overnight closures through Sept. 4“null”
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The closures include southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10)“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 closures include northbound I-405 from milepost 7 to milepost 8“null”
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The closures include southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) and northbound I-405 from milepost 7 to milepost 8. 5“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 closures include southbound I-405 from milepost 12 to Coal Creek Parkway Southeast (milepost 10) and northbound I-405 from milepost 7 to milepost 8. 5, both closing nightly from 9 p.m. to 5 a.m.“null”
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State Route 20 will alternate traffic with flaggers from Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) daily except weekends“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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State Route 20 will alternate traffic with flaggers from Swin Slough Bridge (milepost 50) to Laconner Whitney Road/Bay View Road (milepost 53) daily except weekends for city Anacortes utilities work“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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SR 9 near Kalloch Road (MP 59) is reduced to a single lane with alternating traffic through a bypass road until Sept. 24“009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 52 days, until Sept. 24 for fish passage construction.”
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SR 9 near Kalloch Road (MP 59) is reduced to a single lane with alternating traffic through a bypass road until Sept. 24 for fish passage construction“009: SR 9 is reduced to a single lane near Kalloch Road (MP 59) with a signal alternating northbound and southbound traffic through a bypass road for 52 days, until Sept. 24 for fish passage construction.”
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I-5 near Alger/Lake Samish Road (exit 240) will be reduced to a single lane nightly from 8 p.m. to 5 a.m.“005: The northbound and southbound I-5 will be reduced to a single lane from 8 p.m. to 5 a.m. nightly Monday, Aug. 31, through Friday morning, Sept. 4, near Alger/Lake Samish Road (exit 240) for fish passage construction.”
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I-5 near Alger/Lake Samish Road (exit 240) will be reduced to a single lane nightly from 8 p.m. to 5 a.m. through Sept. 4“005: The northbound and southbound I-5 will be reduced to a single lane from 8 p.m. to 5 a.m. nightly Monday, Aug. 31, through Friday morning, Sept. 4, near Alger/Lake Samish Road (exit 240) for fish passage construction.”
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I-5 near Alger/Lake Samish Road (exit 240) will be reduced to a single lane nightly from 8 p.m. to 5 a.m. through Sept. 4 for fish passage work“005: The northbound and southbound I-5 will be reduced to a single lane from 8 p.m. to 5 a.m. nightly Monday, Aug. 31, through Friday morning, Sept. 4, near Alger/Lake Samish Road (exit 240) for fish passage construction.”