There is no pedestrian walkway. The rails have been removed and there is nothing inviting about the span. There is about half of an old Wisconsin Central RR sign laying there that used to say No Tresspassing before it got ripped in half. Nope, it's closed to all traffic, in fact, someone would have to be a little nuts to try walking across it.
If this bridge is open to pedestrian traffic, then it should not be labeled "closed to all traffic". It appears there is a deck for walking across the bridge.