Abraham Derby III's bridge of 1779 spanning the Severn at the appropriately named Ironbridge, Shropshire. When I lived in Shropshire in the 60s, I remember how spooky this bridge felt on a dull winter's day.
The other image is from further south in England.
The bridge over the Thames at Marlow, completed in 1832. I know this bridge very well, both from my early childhood and early adult life. It was a regular feature of walks in both periods. The Wiki entry on this bridge gave me a fact I never knew, it was the prototype for the Széchenyi Chain Bridge in Budapest.
Eats cheroots and leaves.
The Iron Bridge
Marlow Bridge
Széchenyi Chain Bridge Eats cheroots and leaves.
Here's a covered bridge from Valley Forge, PA:
