Is there not some responsibility on the US govt to reasonably protect its infrastructure in a common maritime path? The harbor long preceded the bridge, and when the bridge was constructed, the harbor had massive container ships moving in and out. No dolphins or starlings around a single point of failure for an entire bridge span? Whole a bridge collapse like this is rare, bridge strikes are not uncommon.

It seems like even modest defenses to slow the ship or push some energy aside could have mitigated a collapse.