update on the most recent bridge collapse

The fact that the bridge was hit by a truck doesn't change the broader point about the need for redundancy and robust design in infrastructure. Any bridge should be able to survive some degree of vehicular impact. I remember how a bridge that crossed the Connecticut River on the New Hampshire/Vermont border had a huge dent in one of its steel girders that had been caused by a log truck. My father claimed to know the guy who had been driving the log truck. The bridge never fell down.