11/9/2009

A cracked eyebar on the Bay Bridge between San Francisco and Oakland led to closure of the east span for 5 1/2 days, but that is not the aging structure's biggest problem. According to seismic experts, the bridge is in danger of collapse from an earthquake of magnitude 6.5. The eastern span of the bridge, which opened in 1936, is scheduled for a $6.3 billion replacement.

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