Worlds Toughest Bridge

A railway bridge in Durham, North Carolina is (unofficially) the toughest bridge in the world.
 Standing 11 feet and 8 inches high at Peabody and Gregson streets, the railway bridge is an insurmountable obstacle for drivers of large trucks and other oversized vehicles.  This is despite the yellow warning lights, which start flashing on the bridge when the electronic height sensor detects that an approaching vehicle is too tall. 
Music: "Gonna Fly Now" (theme song from the movie Rocky) by Bill Conti.