SR24 Caldecott Tunnel Overnight Bore Closures


District: 4 - Bay Area 
Contact: Marcus Wagner
Phone: (510) 715-7614

State Route 24 (SR-24)-Caldecott Tunnel 
Overnight Bore Closures
Maintenance Work

Thursday , June 3, 2021at 9:00 PM #1 and #2 Bores will be closed overnight

ALAMEDA AND CONTRA COSTA COUNTIES – Caltrans will alternate overnight closures of various bores of the State Route 24 (SR-24) Caldecott Tunnel beginning Thursday, June 3 at 9:00 PM. This is for regular tunnel washing work. While one bore is closed, the other bores will remain open to traffic.

E/B HWY 24, Bore #1 will be closed on the following Dates & Time:
- Thursday June 3, 2021 (Closed 9:00 PM - 1:00 AM)
E/B HWY 24, Bore #2 will be closed on the following Dates & Time:
- Friday June 4, 2021. (Closed 1:00 AM – 5:00 AM)

In case you missed it, see our Caltrans NewsFlash and how Caltrans washes the Caldecott; Caldecott Tunnel Maintenance - Caltrans News Flash #209 - Bing video

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, follow For real-time traffic, click on Caltrans QuickMap: