I'm sure anyone who'd seen that bridge would recognise it instantly, and I don't. It seems odd that it's so heavily engineered. Railway and canal seem to have been ruled out, and road seems even more unlikely, so there's not much left other than a river.
The road on the other side seems to go through a cutting, which probably it took quite a lot of effort to dig, and I wonder if the road was originally a tramway of some kind. If that's right there's a bit more chance that it's passing over a road, and it might help to explain the heavyweight bridge.
All clutching at straws of course. Black and white looks like a clue.