I expect they check it after every bridge strike, but steel ones like that are much more tolerant of getting hit than our Victorian brick structures. Also quite likely that the beam being hit is just there to be hit, and not part of the essential structure.
I expect they check it after every bridge strike, but steel ones like that are much more tolerant of getting hit than our Victorian brick structures. Also quite likely that the beam being hit is just there to be hit, and not part of the essential structure.