Caldecott Tunnel is a tunnel located in the East Bay region of the San Francisco Bay Area in California. It connects the cities of Oakland and Orinda through the Berkeley Hills. The tunnel was named after Thomas E. Caldecott, a prominent highway commissioner in the 1930s.
The Caldecott Tunnel consists of four bores, two in each direction, which were constructed at different times. The original two bores were completed in 1937 and are known as the "1937 bores." In 1964, two additional bores were added to accommodate increasing traffic and are known as the "1964 bores."
The tunnel is a critical transportation artery for the East Bay region, carrying a significant amount of traffic between Oakland and the suburbs to the east. It is also an important link between the cities of San Francisco and Walnut Creek.
Caldecott Tunnel has undergone various renovations and upgrades over the years to improve safety and traffic flow. It is equipped with modern ventilation, lighting, and security systems to ensure the safety of drivers using the tunnel.
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