Starting Monday, Aug. 31, several road closures and lane restrictions will begin on Longview-area highways, according to Washington State Department of Transportation (WSDOT) records. The most significant changes include nightly closures of up to four lanes on northbound I-405 from milepost 11. 5 to 13. 7, and up to two lanes of southbound I-405 from milepost 12 to 10, both through Sept. 4. I-5 will see reduced lanes nightly from 8 p.m. to 5 a.m. through Sept. 4 near exit 240 for fish passage construction. WSDOT says the closures are for construction projects including fish passage work on I-5 and utility work on SR 20. The I-5 fish passage project is scheduled to continue through Sept. 10. Drivers should expect delays and check WSDOT's website for real-time updates.
I-405, I-5, SR 527 closures scheduled
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📄 Source: WSDOT — Highway Construction & Closures — https://wsdot.wa.gov/travel/road-construction
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- ⚠Starting Monday, Aug. 31, several road closures and lane restrictions will begin on Longview-area highwaysNo usable supporting receipt — unverified.
- ✓The information is according to Washington State Department of Transportation (WSDOT) records“WSDOT statewide highway construction and road closure updates — 8/31/2026:”
- ✓The most significant changes include nightly closures of up to four lanes on northbound I-405 from milepost 11.5 to 13.7“405: Up to four lanes of northbound I-405 from milepost 11.5 to milepost 13.7 will be closed nightly, 9:30 p.m. Monday, Aug. 31 – 4:30 a.m. Friday, Sept. 4.”
- ✓Nightly closures of up to four lanes on northbound I-405 will be through Sept. 4“405: Up to four lanes of northbound I-405 from milepost 11.5 to milepost 13.7 will be closed nightly, 9:30 p.m. Monday, Aug. 31 – 4:30 a.m. Friday, Sept. 4.”
- ✓Nightly closures of up to two lanes of southbound I-405 from milepost 12 to 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.”
- ✓Nightly closures of up to two lanes of southbound I-405 will be through 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.”
- ✓I-5 will see reduced lanes nightly from 8 p.m. to 5 a.m. through Sept. 4 near exit 240“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.”
- ✓The closures are for construction projects including fish passage work on I-5“005: The left lane of northbound I-5 will close from 8 p.m. to 5 a.m. nightly Sunday, Aug. 30, through Friday morning, Sept. 4, north of North Lake Samish (exit 246) for fish passage construction. More information on the <a href="https://wsdot.wa.gov/construction-planning/search-projects/i-5-tributaries-friday-lake-chuckanut-creeks-fish-passage">project webpage</a>.”
- ✓The closures are for construction projects including utility work on SR 20“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.”
- ⚠The I-5 fish passage project is scheduled to continue through Sept. 10No usable supporting receipt — unverified.
- ⚠Drivers should expect delaysNo usable supporting receipt — unverified.
- ⚠Drivers should check WSDOT's website for real-time updatesNo usable supporting receipt — unverified.
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