San Francisco–Oakland Bay Bridge
suspension bridge connecting San Francisco and Oakland, California, USA
The San Francisco–Oakland Bay Bridge, commonly referred to as the Bay Bridge, is a complex of bridges spanning San Francisco Bay in California. As part of Interstate 80 and the direct road between San Francisco and Oakland, it carries about 260,000 vehicles a day on its two decks. It includes one of the longest bridge spans in the United States.
The toll bridge was conceived as early as the California gold rush days, with "Emperor" Joshua Norton famously advocating for it around 1855–1860, but construction did not begin until 1933. Designed by Charles H. Purcell, and built by American Bridge Company, with construction directed by the chairman of the engineering committee Edward Hansen Connor, it opened on Thursday, November 12, 1936, six months before the Golden Gate Bridge. It originally carried automobile traffic on its upper deck, with trucks, cars, buses and commuter trains on the lower, but after the Key System abandoned its rail service on April 20, 1958, the lower deck was converted to all-road traffic as well. On October 12, 1963, traffic was reconfigured to one-way traffic on each deck, westbound on the upper deck, and eastbound on the lower deck, with trucks and buses also allowed on the upper deck. In 1986, the bridge was unofficially dedicated to former California governor James Rolph.
The bridge has two sections of roughly equal length; the older western section, officially known as the Willie L. Brown Jr. Bridge (after former San Francisco mayor and California State Assembly speaker Willie L. Brown Jr.), connects downtown San Francisco to Yerba Buena Island, and the newer east bay section connects the island to Oakland.
“San Francisco–Oakland Bay Bridge” enters the record as suspension bridge connecting San Francisco and Oakland, California, USA. Crown Archives preserves that source wording while asking what Francisco, Oakland and Bridge can confirm, complicate or overturn.
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“San Francisco–Oakland Bay Bridge” is worth following because a concise public description often conceals a longer documentary argument. Here, Francisco, Oakland and Bridge provides the most credible route into that argument.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 10, 2026. The linked authority identifier is Q771404. VIAF identifies the subject as 315530258. The Library of Congress control number is sh86005270. Authority coordinates are 37.818, -122.347. 2 of 5 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1855, 1860, 1933 and 1936.
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This entry incorporates text from “San Francisco–Oakland Bay Bridge” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.