If you see a gap in a concrete highway bridge, don't fret. It's probably not a sign of a defect; more likely, it's there to ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Another previous style, still visible though unused, is the jackknife bridge. These bridges were anchored to one bank and opened like a jackknife. Examples can be seen on the west bank of the Flats ...