That makes it much easier. Its Bridge Andau connecting Austria and Hungary. If I'm not mistaken you already said the answer for the second part, when you said many people fled to the west, so it is a symbol which is related to the end of the Hungarian Uprising.James Michener wrote a book about this bridge.
My mother family is form Hungary. Her mother and father came to USA prior to the start of WWI. Many Great Uncle's, Aunts, etc still in Hungary. Mom married my dad whose family came from Wales. Small world, as The Lord says, we are all one.It's a small bridge over Einserkanal, which partly forms the border between Austria and Hungary.
In 1956, many Hungarians fled to the west using that bridge.