|
Ed. 10 | Oct. 6, 2026
Welcome to latest edition of the I-405/SR 167 Program newsletter, where we provide regular updates about impactful construction along the corridor.
People traveling southbound throughout the Puget Sound region should expect delays this weekend, Oct. 9-12, as all lanes of southbound I-405 in Bothell will close as a part of the I-405/Brickyard to SR 527 Improvement Project.
In this issue, you’ll find the latest closure information, a summary of work completed since last weekend, and a preview of what’s coming next so you can “know before you go.”
To learn more, visit our WSDOT Engage Page. This page brings together construction and closure information, and ways to share your feedback all in one place.
Southbound I-405 full closure in Bothell, Oct. 9-12
Southbound I-405 will close from SR 527 to SR 522 starting from 10 p.m. Friday, Oct. 9 to 4 a.m. Monday, Oct. 12. A signed detour will be in place. Crews will work on drainage, pavement reconstruction and bridge repair.
The following ramps will also close:
- SR 527 on-ramp to southbound I-405
- Northeast 195th on-/off-ramps to I-405
- SR 522 off-ramp to southbound I-405
 Detour map for the southbound I-405 closure in Bothell from SR 527 to SR 522.
People should expect heavier traffic and longer travel times on southbound I-5 and through Bothell, as drivers shift their routes during the closure. Travelers may experience additional congestion Sunday, Oct. 11, when the Seattle Seahawks host the San Francisco 49ers at Lumen Field.
Additionally, northbound I-5 in Seattle is reduced to two lanes across the Ship Canal Bridge until the end of 2026 as part of the Revive I-5 Ship Canal Bridge Preservation project.
Upcoming work on I-405
Oct. 9-12
- Full closure of southbound I-405 in Bothell
Oct. 16-19
- Full closure of northbound I-405 in Bellevue
Oct. 19-20
- Overnight closure of I-405/Northeast 132nd Street interchange in Kirkland
This schedule is subject to change due to the nature of construction. Weather, traffic conditions, equipment availability, and other factors can affect scheduled work.
In addition to these impactful closures, expect nighttime lane and ramp closures and ongoing construction along the I-405 corridor. Check the real-time travel map for alerts.
Over the summer, crews made significant progress on the three projects currently under construction along the I-405/SR 167 corridor:
Watch our highlight reel to see more construction highlights from summer 2026.
Recent accomplishments
Paving southbound I-405 in Tukwila
Last weekend, crews paved portions of southbound I-405 in Tukwila over a weekend closure, Oct. 3-4, as part of the I-405/Renton to Bellevue Widening and Express Toll Lanes Project.
 Crews began paving southbound I-405 in Tukwila on Saturday night, Oct. 3.
 Crews completed paving southbound I-405 in Tukwila on Sunday morning, Oct. 4.
Keep in touch
We want to hear from you. Please reach out if you have questions or comments.
Email: I405SR167Program@wsdot.wa.gov
24-hour hotlines for construction:
- I-405/Brickyard to SR 527 Improvement Project | 425-354-3232
- I-405/Northeast 85th Street Interchange and Inline BRT Station Project | 425-224-2423
- I-405/Renton to Bellevue Widening and Express Toll Lanes Project | 425-818-0161
Resources
WSDOT Engage | WSDOT travel map | WSDOT mobile app | Flickr
Social media
X | Threads | Facebook | Instagram | Reddit
Webpages
|
