it's out there and must be answered now wrote:
the obvious question here is, why did they design bridges that could be so easily knocked down by a boat?
They are 100% safe unless a boat crashes into it, but consider the boat-crash factor and maybe a better bridge is needed. Apparently it is not the first boat-destroyed bridge.
Actually, the obvious question here is why you're too dim-witted to grasp that any bridge in the world would go down when a fully-loaded 1000-foot container ship blasted straight into its main support-pillar at 10 knots.

