Simulation technology was used to help design and build the San Francisco-Oakland Bay Bridge in California -- and to communicate to the public about the work and closures. The technology shows how a bridge or other structure "will perform based on how it is used, the conditions around it, its design, materials and even variables such as the position of a joint" before anything is built. "Caltrans was the first to use animation in this manner and I think you're going to see this technology used by other transportation departments in the world to build the infrastructure we need," said bridge project spokesman Bart Ney.

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