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Published on September 29, 2025
Webster Tube (State Route 61) Overnight Closures for Maintenance Work
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.
District 4 Contact: DeNise Harding,Denise.harding@dot.ca.gov Phone: (279) 234-2175
Public Works Department