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May 17, 2010

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Christopher

Sometimes life cycle costs provide for a bridge or culvert to fail at some point before civil engineers, public officials or the general public would like. In this case I'd guess cost was a driving concern on how the bridge was designed. The abutments encroach into the flood path, the bridge wasn't raised a great distance above the historic water flow. Both of these design elements point to cost saving measures. It appears to be a designed to fail situation to a specific probability event rather than the lack of planning your post implies. I don't think an assumption of bad planning can be determined without knowing more of the original design intent.

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