A Bailey bridge was a prefabricated bridge developed by the British Army in the Second World War. It was made from a set of standardised components so that bridges of varying lengths and load-carrying ability could be assembled to order. They were used in every theatre of the war and many remained in place for several years after the war until the civil authorities could replace them with more permanent structures. Research Bailey bridge
 
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert