There are two types of end posts: male and female. During installation, the female end post is installed on the male end of the truss, and the male end post is installed on the female end of the truss. The two round holes on the side of the end column are connected to the upper and lower chords of the truss, and the upper elliptical hole is connected to the second-tier truss; the lower part of the end column is provided with a short cantilever with positioning pins and a movable iron buckle for setting and fixing Beam.
321-Type Bailey Bridge is a type of bridge system that can be dissembled and rapidly erected. It was designed according to British Compact-100 Bailey Bridge. The whole bridge is welded with high-tensile strength steel. The girder is light weight composite panels and the panels are connected by panel connection pins. The conversion between the parts is easy and they are lightweight. It is easy to assemble or disassemble and transport them. It can also be assembled into different forms of panel bridges according to their span length and transportation requirement. So, it has been widely applied as a more developed and guaranteed panel bridges for emergency transportation.