Despite the terrifying image of a 250-foot wave about to wash over the Golden Gate Bridge, tsunamis do not actually pose a considerable threat to the Bay Area. Bay Curious is a podcast that answers your questions about the Bay Area.
People Also Ask
The deck of the bridge is about 245 feet (75 m) above the water. After a fall of four seconds, jumpers hit the water at around 75 mph (120 km/h). Most of the jumpers die due to impact trauma. About 5% of the jumpers survive the initial impact but generally drown or die of hypothermia in the cold water.
In Ward's simulations, the wave reaches a maximum height of about 30 feet. “That's barely to the top the pylon,” says Ward, who is confident that the bridge would have no trouble withstanding the wave energy. “It probably wouldn't even touch the steel.”
It takes four seconds to fall the 220 feet from the Golden Gate Bridge to the waters of the San Francisco Bay below. In that brief instant, a falling body can reach speeds of 75 m.p.h. The impact is almost always fatal. Just three months after the bridge opened in 1937, a man jumped.
The forces carried down through the steel towers are resisted by the strength of the concrete foundations, which extend into bedrock. The pulling or tension forces in the cables are resisted by the massive concrete anchorages at both ends of the Bridge, and those anchorages are also embedded in bedrock.
Between 2000 and 2019, the bridge averaged between 30 and 40 suicides per year. It's been a long hard haul, and I'm delighted that the net is going forward and that suicides have decreased, said Bridge Rail Foundation co-founder David Hull.