I-405 will see extended closures from Friday, August 28 through Monday, August 31, affecting both northbound and southbound lanes. The northbound closure extends from Northeast 70th Place to Northeast 85th Street, while the southbound HOV lane closure runs nightly until Friday, August 28. The SR 9 fish passage construction project near Kalloch Road will reduce traffic to a single lane through September 14, with alternating traffic at milepost 49 until September 3. WSDOT's project webpage provides more details on these construction zones. Drivers should expect delays and detours during these closures, with specific timeframes and locations provided in WSDOT's official updates.
I-405 closures extend through Labor Day
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📄 Source: WSDOT — Highway Construction & Closures — https://wsdot.wa.gov/travel/road-construction
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- ✓I-405 will see extended closures from Friday, August 28 through Monday, August 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 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
- ⚠The closures will affect both northbound and southbound lanesNo usable supporting receipt — unverified.
- ✓The northbound closure extends from Northeast 70th Place to Northeast 85th Street“405: All lanes of northbound I-405 will close from Northeast 70th Place to Northeast 85th Street from 11 p.m. Friday Aug. 28 to 4 a.m. Monday, Aug. 31. A signed detour will be in place.”
- ✓The southbound HOV lane closure runs nightly until Friday, August 28“405: The HOV lane of southbound I-405 from SR 181 (milepost 1) to I-5 (milepost 0) will be closed nightly, 9:30 p.m. Monday, Aug. 24 – 5 a.m. Friday, Aug. 28.”
- ✓The SR 9 fish passage construction project near Kalloch Road will reduce traffic to a single lane through September 14“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 42 days, until Sept. 14 for fish passage construction. Expect delays in the area.”
- ✓Alternating traffic will be at milepost 49 until September 3“009: Northbound and southbound traffic will alternate from 10 a.m. to 4 p.m. daily Mondays through Thursday through Thursday, Sept. 3, just south of Mount Vernon Big Lake Road (milepost 49) for fish passage construction. Expect delays in the area.”
- ✓WSDOT's project webpage provides more details on these construction zones“More information on the <a href="https://wsdot.wa.gov/construction-planning/search-projects/sr-9-unnamed-tributaries-nookachamps-hansen-creeks-fish-passage">project webpage</a>.”
- ✓Drivers should expect delays during these closures“Travelers on SR 20 near Loup Loup Pass will encounter slowdowns and delays while contractor crews perform pavement repairs and paving throughout the pass Mondays to Thursdays from 6 a.m. to 8 p.m. until Aug. 27. Expect alternating, one-lane, two-way traffic, automatic flaggers, temporary rumble strips and reduced speed limits.”
- ⚠Drivers should expect detours during these closuresNo usable supporting receipt — unverified.
- ⚠Specific timeframes and locations are provided in WSDOT's official updatesNo usable supporting receipt — unverified.
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