Sure, precautions might not work as well as intended. But my comment was in regards to having to build a really expensive bridge to make it crash resistant. I

Sure, precautions might not work as well as intended. But my comment was in regards to having to build a really expensive bridge to make it crash resistant. I pointed out that you can instead build a cheap flimsy bridge and put the protection in the water around the pylons. My impression is that the Baltimore bridge had no such extra protection (?) In that case, it's not really "the best design", right?