The Tunkhannock Viaduct, in Northeastern Pennsylvania, is largest concrete bridge in America, and carries the Norfolk Southern Railway across Tunkhannock Creek. It was completed in 1915.
I waited all morning for the fog to clear just the right amount to reveal the spans in the morning sunlight.

Camera: Canon EOS REBEL T2i
Lens: EF-S 50 mm
Exposure: 1/320 sec. @ f/13