Alameda County — Caltrans has scheduled overnight closures of the Webster Tube (State Route 61) on Friday October 3rd and Saturday October 4th 10:00PM to 4:30AM each night, for tunnel painting and maintenance. The closures will take place overnight, and the tube will remain open during the daytime.
Closure Details
- Friday, October 3, 2025 – 10:00 PM to 4:30 AM
- Saturday, October 4, 2025 – 10:00 PM to 4:30 AM
Traffic Control & Detour Information
- Changeable message and directional signs will be in place to assist drivers.
- The California Highway Patrol (CHP) will be onsite to support traffic management.
Important Notes
- The tunnel will remain open during the daytime hours; closures are nighttime only.
- Work is weather dependent.
Be Work Zone Alert and expect travel delays.
Caltrans will update its X page at https://twitter.com/CaltransD4 on the latest highway conditions, and drivers are encouraged to check out Quickmap http://quickmap.dot.ca.gov/
Motorists can also receive 24/7 highway condition information statewide by calling 1-800-427-ROAD or 1-800-427-7623. Thank you for your patience as we work to maintain our state’s highways, bridges, and tunnels.
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