51m fast mechanized bridge is a set of emergency equipment carried by automobile and accomplished erection and retrieval by erection vehicle. One complete set of equipment is composed of one erection vehicle and six transportation vehicles. The bridge is 17~51m long , 4m wide with high-speed erection to ensure all sorts of vehicles with a tracked load of up to 55 tons or an axle load of up to 13 tons to go across rapidly .

51m fast mechanized bridge possesses the feature of good flexibility, big single span, simple structure, speedy erection, high mechanization and less labor force. Besides, It has the advantages of convenient transportation and favorable adaptability of bank.

51m fast mechanized bridge consists of spans, erection vehicle and transportation vehicles. The erecting process: first connect the guiding girder with bridge sections one by one through the erection vehicle to being a complete bridge, then push the cantilever of the guiding girder to the opposite bank depending on the weight balance of bridge and erection vehicle, last push the complete bridge to the opposite bank along the guiding girder to finish the erection of bridge.