A Bridge Built to Sway When the Earth Shakes

[This engineering feat is schedule to open sometime in 2013.  After opening, the existing bridge will be torn down.  Be sure to click on the interactive link below, very interesting……flagranny2]

 

SAN FRANCISCO — Venture deep inside the new skyway of the San Francisco-Oakland Bay Bridge, and it becomes clear that the bridge’s engineers have planned for the long term.

“We wanted to make this bridge flexible so that when the earthquake comes in, the flexibility of the system is such that it basically rides the earthquake,” said its lead designer, Marwan Nader, a vice president at the engineering firm T. Y. Lin International.