California Department of Transportation
09/14/2026 | Press release | Distributed by Public on 09/14/2026 14:51
Caldecott Tunnel Overnight Closures on Eastbound State Route 24 Bore #1 for Maintenance Activities
Caldecott Tunnel Overnight Closures on Eastbound State Route 24 Bore #1 for Maintenance Activities
Published: Sep 14, 2026
Tuesday, September 15, 2026, and Wednesday, September 16, 2026
10:00 p.m. - 4:30 a.m.
Alameda And Contra Costa Counties - Caltrans has scheduled overnight closures of Bore 1 of the Caldecott Tunnel on eastbound SR-24 to perform lighting upgrades and routine tunnel maintenance. For current District 4 lane closure information click here.
Eastbound SR-24 Bore #1 (right) Closures:
WHEN:
- Tuesday, September 15, 2026
- Wednesday, September 16, 2026
TIME:
- 10:00 p.m. to 4:30 a.m., Nightly
During these closures, all other bores in each direction will remain open. All work is weather dependent.
Traffic Control Measures:
Changeable message signs will be in place to assist motorists traveling in the area. Motorists are advised to expect delays, prepare to merge and allow extra travel 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 September 14, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on September 14, 2026 at 20:51 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]