California Department of Transportation
10/15/2026 | Press release | Distributed by Public on 10/15/2026 12:16
State Route 24 (SR-24) Caldecott Tunnel Overnight Closures For Bores 1, 2 and 3
State Route 24 (SR-24) Caldecott Tunnel Overnight Closures For Bores 1, 2 and 3
Published: Oct 15, 2026
Beginning Monday, Oct. 26, 2026, from 10 p.m. to 4:30 a.m.
Alameda And Contra Costa Counties - Caltrans construction will conduct overnight closures of Caldecott Tunnel Bores 1, 2, and 3 on State Route 24 for fire safety inspections and routine maintenance. All work is weather-dependent and subject to change. Sign up for Caldecott Tunnel Traffic Advisories at Caldecott Tunnel Updates!
SR-24 closure schedule, 10 p.m. to 4:30 a.m.:
Bore No. 2 closure - eastbound SR-24
- Monday, Oct. 26, 2026
Bore No. 1 closure - eastbound SR-24
- Tuesday, Oct. 27, 2026
Bore No. 3 closure - westbound SR-24
- Wednesday, Oct. 28, 2026
During the work, at least one bore in each direction will remain open.
Traffic Control Measures:
Changeable message signs will be in place to assist motorists traveling in the area. Motorists are advised to expect delays and allow extra time. Please drive with caution through the construction zone. Slow for the Cone Zone.
For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay
For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov
Follow us on X: https://x.com/CaltransD4
Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.
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California Department of Transportation published this content on October 15, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on October 15, 2026 at 18:16 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]