Close to my home, a causeway that connects South Padre Island to the mainland was hit by a barge about 2 1/2 years ago... It actually took out a portion of a bridge, and several people were killed because they couldn't see the part of the bridge that had fallen (it was at night). Since then, they've put in barriers to keep ships from getting close to hitting the bridge, and they have these lights over every section of the bridge that turn on, and warn motorists if there's something wrong...
At least nobody was hurt in this incident, and there wasn't much damage...