Allied engineers learn to construct Bailey bridge.

Allied engineers learn to construct Bailey bridge. Allied engineers receive instructions in England on building a Bailey bridge, new type span used by the Allies in Italy and France which can cross any gap 240 feet wide without the aid of pontoons. With pontoons, the bridge can cross still wider gaps. Fitted together lilka a jigsaw puzzle, the parts are joined together on rollers on an embankmet and then pushed over the crossing by crews without any mechanical aid. There are 17 parts to the spans and nine for the foundation. Each joint requires only one steel pin.