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Today, the Caldecott Tunnel connects Alameda and Contra Costa Counties, located in the San Francisco Bay Area. The original two bores of this tunnel opened in 1937, the same year as the San FranciscoOakland Bay Bridge, and changed Contra Costa County from an area of small rural communities into one of growing suburbs. But this was not the first tunnel to connect these counties. The Kennedy Tunnel, opened in 1903, was accessed by steep and winding roads and located several hundred feet above todays tunnel. A third bore of the Caldecott Tunnel was opened in 1964 and a long-awaited fourth bore in late 2013. The tunnels have not been without disaster and tragedy over their hundred-plus years of existence, yet they remain an integral part of the commercial, social, and historic fabric of the region.
Mary Solon and Mary McCosker, coauthors of Arcadia Publishing's Images of America title Lafayette and members of the Lafayette Historical Society, have gathered photographs and information from local historical societies, transportation agencies, museums, personal interviews, and other historical sources to chronicle the history of this important regional transportation link.
