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6 of 56: Bridge engineers (l-r) Charles E. Andrew, C. H. Purcell and Glenn Woodruff inspect the West Bay crossing of the San Francisco-Oakland Bay Bridge in 1933. Charles Henry Purcell was the Chief Engineer for the Bay Bridge. It was customary in that time to give credit to one engineer, but in reality not one person could have executed a project of this caliber. He relied heavily on a team of experts and an engineering committee. (Photo courtesy (KGO Photo)

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