Caldecott tunnel restrictions, Credit: Bay Area Telegraph Caltrans says it will temporarily close three of the Caldecott Tunnel’s four bores on different nights in February for tunnel washing, routine maintenance, and drainage cleaning. Photo Albin Reinhart Tunnel building technology has changed significantly since a group of merchants from Oakland pooled their resources to fund the first hand-dug passageway through the hills over 100 years ago . Eastbound lanes on Highway 24 at the Caldecott Tunnel were blocked for part of the Wednesday evening commute after a vehicle fire in one of the bores. 1 day ago · Alameda and Contra Costa Counties – Caltrans will continue overnight closures of Bores 1, and 3 of the Caldecott Tunnel on State Route 24 (SR-24) for tunnel washing, CCTV, routine maintenance, and drainage cleaning. Feb 2, 2026 · It’s thus important to be aware of these dates even if you only use the tunnel during daylight hours. m. to 5 a The Caldecott Tunnel (originally known as the Broadway Low Level Tunnel) is a four bore east-west highway tunnel that connects Oakland to communities in Contra Costa County. Dec 8, 2010 · Construction on the east side of the 4th bore of the Caldecott Tunnel, October 2010. It serves over 160,000 commuters daily. 31301. S. State Route 24 (SR 24) is a heavily traveled east–west state highway in the U. state of California that serves the eastern side of the San Francisco Bay Area. Legal Truck Access Special Route Restrictions Special Route Restrictions Travel Alert: Permanent Truck Ban on SR 2 Effective August 6, 2009, Commercial Vehicles with 3 or more axles, or a gross vehicle weight of 9,000 pounds or more, are prohibited on Rte 2 between I-210 (City of La Canada Flintridge) and County Route N4 (Big Pines Highway). A freeway throughout its entire length, it runs from the Interstate 580 / Interstate 980 interchange (just east of the MacArthur Maze) in Oakland, and through the Caldecott Tunnel under the Berkeley Hills, to the Interstate 680 Jan 2, 2024 · The California Department of Transportation (Caltrans or the Department) proposes to rehabilitate the Caldecott Tunnel Bores 1, 2 and 3. Dec 25, 2025 · (KRON) — Two of the Caldecott Tunnel’s four bores remain closed due to a storm-related electrical emergency, according to Caltrans. Eastbound traffic on Highway 24 at the Nov 29, 2025 · Two bores in the Caldecott Tunnel, carrying state Highway 24 between Alameda and Contra Costa counties, will take turns being closed for maintenance on two evenings. May 10, 2023 · At about midnight on April 7, 1982, a woman - later ruled to be legally drunk - entered the third, northernmost bore of the tunnel between the North Oakland hills and Orinda. Eastbound Bore 1 and westbound Bore 3 were shut down, while… The Caldecott Tunnel runs east-west through the Berkeley Hills, connecting Contra Costa & Alameda Counties via SR 24. Its four bores carry California State Route 24. The Caldecott Tunnel is a four-bore highway tunnel through the Berkeley Hills between Oakland and Orinda, California. The project will preserve the structural integrity of the tunnel, improve ventilation performance and fire-fighting operational response, and extend its service life. (a) No person shall transport any explosive substance, flammable liquid, liquefied petroleum gas or poisonous gas in a tank truck, trailer, or semitrailer through the Caldecott Tunnel located on State Highway, Route 24, near the Alameda-Contra Costa County boundary, connecting Oakland with Contra Costa County in the East Bay area at any time other than between the hours of 3 a.


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