open-road tolling system which functions at highway speeds. Animal incidents In 1965, three circus lions escaped from a truck passing over the Antioch Bridge. Two were quickly recaptured, but one drowned after falling into the river. Humphrey the Whale was stranded near the Antioch Bridge in 1985. References Sources Caltrans Facts - Bay Area External links Bay Area FasTrak – includes toll information on this and the other Bay Area toll facilities Bridges in the San Francisco Bay Area Road bridges in California Plate girder bridges Toll bridges in California Bridges completed in 1930 Bridges completed in 1978 Bridges in Contra Costa County, California Bridges in Sacramento County, California Antioch, California San Francisco Bay Steel bridges in the United States Plate girder bridges in the United States