The Wikipedia article links to the Silver Bridge collapse of 1967, the outcome of the subsequent investigation suggests what may lie ahead:
I suspect we'll know within a few days which bridges in the US have a similar design.
... The collapse focused much needed attention on the condition of older bridges, leading to intensified inspection protocols and numerous eventual replacements. There were only three other bridges built to a similar design, one upstream at St Mary's and a longer bridge at Florianopolis, Brazil. They were both closed immediately, and the St Mary's bridge demolished in 1971....
Update 8/2/07: Culturally, slow to anger, but ....
Update 8/2/07: I've seen mentions of a bridge failure in 1983, the reference is to metal corrosion that caused the collapse of the Mianus River Bridge in Connecticut, killing 3 people and injuring 5 others. Wikipedia has a list of bridge disasters.
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