The Bay Bridge, officially known as the San Francisco-Oakland Bay Bridge, is a major bridge complex in California that connects the cities of San Francisco and Oakland. It spans approximately 7 miles and consists of two major spans, the western span and the eastern span, which were completed in 1936 and 1939, respectively. The bridge is a vital transportation link for commuters and freight traffic in the San Francisco Bay Area. The Bay Bridge is known for its impressive engineering and stunning views of the San Francisco skyline and the Bay. It features a unique design with a combination of suspension and cantilever sections. The bridge underwent significant retrofitting and upgrades after the 1989 Loma Prieta earthquake to enhance its safety and resilience against seismic activity.