Arniston Bridge #16

It's been aaaages since my last bridge blip... we're back on the South Esk, heading North. This is the first and probably only double arched bridge. I believe Horace, of bridge #10 fame, has a cave around these parts, will need to search for it one day. We're getting close to the end of this challenge, maybe 2 to go, actually there's a good stretch of the river the path does not go near, so who knows what I might find :-0