Slab bridge is a detachable and rapidly erected bridge system. It is based on the British Compact-100 Bailey Bridge. The whole bridge is welded from high tensile strength steel. The main beam is a lightweight composite plate, and the panels are connected by the panel connecting pins. The conversion between parts is easy, and they are very light. Easy to assemble or disassemble and transport. It can also be assembled into different forms of plate Bridges according to its span length and transportation requirements. Therefore, as a more developed and safe emergency transportation bridge, it has been widely used.

Because the bridge deck is thin and the beam is light, it is suitable for occasions where the bridge span or load is small.

With the development of the international market, some international users insist on using the imperial size bridge to match the old bridge, and the Great Wall can also provide a special bridge with a panel size of 3.048mX1.45m (hole center distance). In China, it is known as the British Type 321 and Type 200 Bailey Bridge.