Oakland Bay Bridge
The San Francisco–Oakland Bay Bridge (known locally as the Bay Bridge). Its part of Interstate 80 offering a direct route between San Francisco and Oakland; carries approximately 270,000 vehicles per day on its two decks, and has one of the longest spans in the world. The toll bridge was conceived as early as the gold rush days, but construction did not begin until 1933. It opened for traffic on November 12, 1936, six months before the Golden Gate Bridge.