The requirements for a bridge are set by people farther up the expertise chain than we are. Should an airport be able to handle a direct hit by a crashing 747? Should every highway lampost be able to handle a direct hit by a semi-trailer? There comes a point where the trade study incorporates the cost of preventive measures instead of the cost of building a miniature fortress that would experience damage anyway. I expect more will come out about the criteria used for the bridge design.
The requirements for a bridge are set by people farther up the expertise chain than we are. Should an airport be able to handle a direct hit by a crashing 747? Should every highway lampost be able to handle a direct hit by a semi-trailer? There comes a point where the trade study incorporates the cost of preventive measures instead of the cost of building a miniature fortress that would experience damage anyway. I expect more will come out about the criteria used for the bridge design.