This very famous bridge spans the Tamar River between Devon and Cornwall in Great Britain and is considered a combination of arch and suspension bridges. It is called a "Bowstring suspension bridge". The lower portion supporting the track is suspended from the upper arch.

Working under the water in an air tight chamber the massive central pier was constructed on a foundation of bedrock approximately 20 feet under the river mud. The two main spans each weigh over 1000 tons and were floated into position at low tide and then raised 6 feet a week by hydraulic jacks.

The bridge was designed to bear three times the weight of a modern express train and is still in use today.