A "side-by-side comparison" of the old and new eastern spans of the San Francisco-Oakland Bay Bridge in California is being prepared by Caltrans principal bridge engineer Brian Maroney for project status meetings scheduled today and Wednesday. This article details some of the key differences between the new $6.4 billion bridge span and the 1936-built truss span, including the width of travel lanes, the concrete and steel used, and the seismic design. "It's like comparing the safety features of a 1930s Model A Ford to a 2000 Volvo," said Maroney.

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