"This bridge proudly shows the world how many Americans flunked their Mathematics and Reading classes."
Too-tall vehicles are detected well before the bridge, and that turns on the flashing lights.
They don't hit the actual bridge, but a massive steel beam, which has already needed to be replaced...
I say keep it that way, we need the entertainment.
Did I mention that the bridge has it's own website - 11foot8.com?
Verum audaces non gerunt indusia alba. - Ipsi dixit MCMLXXII