The column failures look very similar to Loma Prieta. I would agree, that reinforcing or lack thereof was a culprit. I know nothing of the building standards in Taiwan, but I would be interested to know when the bridge was originally constructed.
The collapse of that viaduct looks eerily similar to the collapse of the Hanchin Expressway in Kobe, Japan in 1995. Those single column, hammerhead supports are not my favorite.
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RE: Large Taiwan bridge collapses from earthquake
RE: Large Taiwan bridge collapses from earthquake
Rod Smith, P.E., The artist formerly known as HotRod10
RE: Large Taiwan bridge collapses from earthquake