The Soup Bridge

I found this bridge while looking for fossils in hungry hollow north pit for their quarry. All that left of the bridge is the support columns. I suspect it was a train bridge. On the side where the north pit is, you can see where the bridge would have ended. My best parking sugestion is to park on fossil road. If you are wondering why it is called soup bridge, when you get there you will find an word etched into the wall. Upon closer inspection the word is visible as soup. Any info or history would be appreciated.