The Caldecott Tunnel is a three bore tunnel in Oakland, California. The tunnel is signed as a part of California State Highway 24, and connects Oakland to communities in Contra Costa County, through the Diablo Range. The tunnel is named after Thomas F. Caldecott, president of Joint Highway District 13, which built the first two tunnels.
Construction of the first two bores was started in 1929, and completed in 1937, and were originally known as the Brodway Low Level Tunnel. The third bore was opened in 1964 and suffered a significant tunnel fire in 1982, one of the few to have involved a gasoline truck. In 2000, the California Department of Transportation began planning the possibility of a fourth bore, due to increased traffic along the route.
Bore 1 and Bore 2 are each 3,610 feet long and carry two lanes of traffic. Bore 3 is 3,771 feet in length, and also carries two traffic lanes.
External links
Department of Tranportation page on the tunnel (http://www.dot.ca.gov/dist4/caldecott/index.html)
The freeway is eight lanes throughout except for the CaldecottTunnels.
Tunnel warning signage along eastbound California 24 indicates whether one or two bores of the tunnel are open to eastbound traffic and also advises certain vehicles to exit.
Prior to entering the CaldecottTunnels after the Orinda exit, travelers along westbound California 24 are advised to use the right tunnel lanes to reach California 13 or Old Tunnel Road, if the option for more than one tunnel bore is available (see eastbound for a more comprehensive description of the three-bore tunnel).
The CaldecottTunnel is a three bore tunnel in Oakland, California.
The east-west tunnel is signed as a part of California State Highway 24, and connects Oakland to communities in Contra Costa County, through the Berkeley Hills.
The CaldecottTunnel was designated a City of Oakland Landmark in 1980, and received a Preservation Award from the Art Deco Society of California in 1993.
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