San Francisco–Oakland Bay Bridge

The San Francisco–Oakland Bay Bridge is a bridge complex linking San Francisco and Oakland across San Francisco Bay. Its western and eastern spans connect through Yerba Buena Island.

Yerba Buena Island: An island in San Francisco Bay connected to San Francisco and Oakland by the Bay Bridge. The island divides the bridge into western and eastern spans.
James B. Urquhart: A San Francisco engineer who promoted an early proposal for a bridge across San Francisco Bay. His advocacy helped make a bay crossing a serious civic proposal.
Suspension bridge: A bridge whose deck hangs from main cables supported by towers and anchored at each end. The western span uses suspension construction to cross deep water.
Bay Area Rapid Transit: A regional rapid-transit system serving San Francisco and surrounding parts of the San Francisco Bay Area. BART's parallel transbay service complements the bridge's highway connection.
Western span of the San Francisco–Oakland Bay Bridge: The suspension-bridge section connecting San Francisco to Yerba Buena Island. It forms the bridge complex's western crossing.
Charles H. Purcell: The California state engineer who led design and construction of the Bay Bridge. He directed the engineering program that brought the bridge into reality.
Self-anchored suspension bridge: A suspension bridge whose main cable is anchored to its own deck rather than to ground anchorages. The eastern span's signature bridge uses this less common design.
San Francisco–Oakland ferry: Passenger ferry services connecting San Francisco with Oakland and other East Bay cities. Ferries offer a waterborne alternative to crossing the bay by bridge.
Eastern span of the San Francisco–Oakland Bay Bridge: The section connecting Yerba Buena Island to Oakland, rebuilt with a self-anchored suspension bridge and viaduct. Its replacement transformed the complex's eastern crossing.
California Toll Bridge Authority: A California state agency created to finance and oversee toll bridges, including the Bay Bridge. The authority organized financing and construction for the crossing.

Linked from 1 page