Drypool Bridge, Hull

The Drypool bridge was built in 1961 and replaced a much smaller bridge. It is designed to lift to allow river traffic to pass under; fortunately for road traffic this happens infrequently these days. You can appreciate that when the river bridges are under repair Hull's cross town traffic grinds to a halt.

For those with an engineering interest this is a bascule bridge; you can see an animation of how it works here.