Building the Caldecott Tunnel

"Building the Caldecott Tunnel" offers an engaging historical account of the tunnels connecting Alameda and Contra Costa Counties in the San Francisco Bay Area. It covers the original Kennedy Tunnel, the construction and expansion of the Caldecott Tunnel's multiple bores from 1937 to 2013, and its significant impact on regional development. Parents will appreciate its detailed look at civil engineering, local history, and the challenges overcome in creating such a crucial piece of infrastructure. The book touches upon "disaster and tragedy" associated with the tunnels, presenting a realistic view of large-scale construction projects without dwelling on graphic details, making it suitable for children interested in history and how things are built.

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 Francisco-Oakland 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 today's 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.