Wikipedia
The Bailey bridge is a type of portable, pre-fabricated, truss bridge. It was developed by the British during World War II for military use and saw extensive use by British, Canadian and the American military engineering units.
A Bailey bridge had the advantages of requiring no special tools or heavy equipment to assemble. The wood and steel bridge elements were small and light enough to be carried in trucks and lifted into place by hand, without requiring the use of a crane. The bridges were strong enough to carry tanks. Bailey bridges continue to be extensively used in civil engineering construction projects and to provide temporary crossings for foot and vehicle traffic.
Usage examples of "bailey bridge".
It caught me as I was crossing the Bailey bridge that spanned the burn and it threw me against the girders as though I were a piece of paper.
A half mile below the house, the dirt road leading to the Miller farm crossed the creek on an old military Bailey bridge.
Ground transport brought regular army units to the mainland end of the island road, and a company of troops was sent over by rope while the engineers set to work building a Bailey bridge.