San Franisco • Oakland Bay Bridge

The San Francisco – Oakland Bay Bridge, (legally the The James ‘Sunny Jim’ Rolph Bridge, known locally as the Bay Bridge) is a multi-structure toll bridge complex that spans San Francisco Bay and links the California cities of Oakland and San Francisco in the United States, as part of Interstate 80. It carries approximately 270,000 vehicles per day.[1]

Conceived as early as the gold rush days, construction on the bridge did not begin until 1933. Designed by Ralph Modjeski,[citation needed] it opened for traffic on November 12, 1936, six months before the Golden Gate Bridge.