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Washington State Department of Transportation
I-405/SR 167 Corridor Program – 777 108th Ave. NE – Bellevue, WA 98004
TRAVEL ADVISORY
Oct. 6, 2026
Contact: Lauren Penning, communications, 206-380-2054
Full closure of southbound I-405 in Bothell for pavement reconstruction, drainage, Oct. 9-12
BOTHELL – Travelers should expect a full closure of southbound Interstate 405 in Bothell from Friday, Oct. 9 to Monday, Oct. 12. Crews working for the Washington State Department of Transportation will work on drainage, pavement reconstruction and bridge repairs as a part of the I-405/Brickyard to SR 527 Improvement Project.
Southbound I-405 full weekend closure, Oct. 9-12
Southbound I-405 will close from State Route 527 to SR 522 starting from 10 p.m. Friday, Oct. 9 to 4 a.m. Monday, Oct. 12. A detour will be in place.
The following ramps will also close:
- SR 527 on-ramp to southbound I-405
- Northeast 195th on-/off-ramps to I-405
- Southbound I-405 off-ramp to SR 522
The detour route on southbound SR 527 is limited and cannot carry normal I-405 freeway volumes. “Know before you go," or, if possible, delay discretionary travel to help minimize backups. Travelers are advised of delays on southbound I-5, especially on Sunday, Oct. 11 when the Seattle Seahawks host the San Francisco 49ers at Lumen Field.
Work is dependent on good weather and may be rescheduled. Schedule updates will be available on WSDOT’s Travel Center map, the WSDOT mobile app and by signing up for . Additional construction and closure information is available on the WSDOT Engage page.
Hyperlinks within the release:
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WSDOT keeps people, businesses and the economy moving by operating and improving the state's transportation systems. To learn more about what we're doing, go to www.wsdot.wa.gov/news for pictures, videos, news and blogs. Real-time traffic information is available at wsdot.com/traffic.
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