Science of Bridge Safety

latitude 37.806191, longitude -122.474581

After the Loma Prieta earthquake in 1989, almost all of the Bay Area's toll bridges underwent major upgrades. Yet even with the focus on retrofitting, there are still 40 Bay Area bridges that rate lower than the one that collapsed in Minneapolis. How do we know which bridges are safe?

Air Date: Friday, Aug 10 2007 at 8:33AM
Duration: 05:45 Segment: 28

 

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