Some Spanish guys flew under the Ballachulish bridge - and the Court let them off. Downdraft excuse. Then an English guy (RAF?) flew (a Pa28) under the Skye bridge, avoiding birds, - and I think got away with it. Unlikely excuses are only accepted by Scottish courts if you are not a native.
A Chinook flew under the Kessock bridge, with authorisation by the military.
A light aircraft flew under the Kessock bridge soon after it opened. The pilot was never traced. As he was a local, he would have got a severe sentence if caught. (He is now deceased.)