I had queried something I’d seen on the trestle bridge in one of my photos recently and was told that the rail bridge has an annual inspection and then an independently structural integrity inspection every 5 years. They also inspect for pest infestation. Some of the bridge uprights date back to 1920 and are still in perfect condition which speaks a lot for what the early pioneer railway men knew in those days. I was thanked for my concern and I appreciated being given the above information.
This is a span of the trestle bridge in Belgrave.