Somebody actually did it?
Holy cow! Its been discussed at length by many up there. Even a B52 crew had the thoughts of doing it, but they decided it might not be a good thing if they hit one side or the other. Matter of fact, I logged a piece of property of a B52 crewman who said that the pilot had got onto the deck and was actually gonna do it. He said that he had the ejection lever ready in case he kept up the run. He didnt and pulled up a couple miles from the bridge.
Hmm. Wikipedia says a B-52H is 40’ tall and also that clearance beneath the Mackinac Bridge is 155’. That means it needs to be at least 110’ off the deck or lower to clear the bridge!