Tour San Francisco home page internet tours logo
Google

Home<San Francisco<Treasure Island and Yerba Buena Island

Site Map

Yerba Buena & Treasure Islands and The Bay Bridge

There are two connected islands in San Francisco Bay. One, Treasure Island, is man-made. The other, Yerba Buena Island, connects the two sections of the San Francisco-Oakland Bay Bridge.

spacerclick images to enlarge

Yerba Buena Island has been known by many names including Seabird Island, Wood Island and Goat Island. Yerba Buena Island history includes a considerable amount of controversy over its use and ownership. Washington ordered its occupation in 1868 to keep Yerba Buena Island out of the hands of the Central Pacific Railroad.
spacer
Treasure Island, a man made island, has been used as an international airport, site of the 1939–40 World's Fair: Golden Gate International Exposition and as a military base. The Museum of The City of San Francisco has an article and links to additional World’s Fair information.
spacer
Clipper Cove—between Treasure Island and Yerba Buena Island was named for the airplanes that took off from the cove before the island was taken over by the Navy at the beginning of WWII. Clipper Cove and Treasure Island were recently host to the SF International Dragon Boat Festival.
spacer
In this 1935 historical aerial photo of the San Francisco, Oakland Bay Bridge construction you can see that Treasure Island does not yet exist!
spacer
The San Francisco-Oakland Bay Bridge, an 8.5 mile long combination suspension / cantilever structure, passes through Yerba Buena Island and connects San Francisco with Contra Costa and Alameda Counties.
spacer
Bay Bridge and Yerba Buena Island pictureWhen it was first constructed the Bay Bridge was the most expensive man-made structure ever built, the longest steel high-level bridge in the world and the 58 foot Yerba Buena Tunnel was the tallest bore in the world.
spacer
The part of the Bay Bridge that connects San Francisco and Yerba Buena Island is really two suspension bridges. A monolithic concrete pier in the middle supports one end of each to the two bridges.
spacer
The Bay Bridge foundations extend to 200 and 242 feet below water — 100 feet into the mud. The deeper pier required more concrete than the Empire State Building and is bigger than the largest of the Pyramids in Egypt. Statistics and history of the Bay Bridge are on this Caltrans™ site.
spacer
The Treasure Island Museum has information about Bay Area "treasures" from its rich history of military, world's fair and Panama Clipper flights.

A controversial design for replacing the east span of the San Francisco - Oakland BayEastern span of San Francisco Oakland Bay Bridge picture Bridge was accepted and construction begun, halted then started again. Part of the two tier span was damaged in the October 1989 Loma Prieta earthquake. Construction of the new East span is expected to be completed by the fall of 2013. State-owned bridges will have a toll increase to $4 to pay for cost overruns associated with delays as the governor and legislature debated design details.
spacer
The new East Span opened on September 9, 2013 with a much appreciated addition — a walking, hiking trail. I've posted a photo essay of the new Bay Bridge Trail with many pictures of the new span and shots of the beginning of the demolition of the original span.
spacer
San Francisco landmarks visible from Treasure Island and Yerba Buena Island include The Golden Gate Bridge, Alcatraz Island, Coit Tower and the Transamerica Pyramid in the Financial District.
spacer
After you've taken a virtual tour of San Francisco on iNeTours.com you might want to take a real San Francisco Tour.

Next: San Francisco International Dragon Boat Festival

Website and all photos copyright © 20012014 Lee W. Nelson