I suspect that it's a railway bridge, if you look to the left of the bridge there's a five branch telegraph pole and there appears to be a swathe of wires going from it across to the right - I've had a play about with the photo and it seems that there are a lot there but fuzzy due to the photo not being in sharp focus. Telegraph wires frequently followed railway lines and with that number it must have been a connection between sizeable towns.
Can you tell from the photo album if there's any sequence in the dating of the photos before and after the bridge on, that might give a bit of a clue?
I've also noted that beyond the bridge there's a substantial wall dropping down to the right, probably a retaining wall. Could that indicate a station down to the right.
I've followed all of the defunct railway lines from the Arun valley line across to Midhurst, Shoreham to Christ's Hospital south of Horsham and Christ's Hospital westwards as far as is traceable and I can't find a bridge like this one. I also can't find one on the main lines up through the Arun Valley.
I also looked at the Arun and Wey canal and couldn't find anything there either.
I guess it's possible that the bridge and/or houses have been demolished/replaced.
Intriguing especially as it looks familiar but I can't place it!