This is another picture from the Mon. I'm not entirely sure what this is, it looks like the base for an old bridge. Perhaps it is. Its something to look into. I've seen walls like this in Pittsburgh next to the rivers, which is what made me think this might be part of an old bridge that they kept as a place to tie off their boats.
I like taking pictures of old brick things. Especially seeing that the plant life has taken over the bricks.