The Acrow Panel Bridging System, also known as the 700XS® System, is a light bridge composed of large orthotropic deck units and tall truss systems. The trusses of this type of bridge are 50% taller than alternate panel bridges which provide the bridge with 50% greater bending strength and 20% greater shear strength. The orthotropic deck units can handle heavy wheel loads such as those in the AASHTO LRFD Bridge Design Specifications. These bridges can be easily transported to the bridge site using standard trucks or standard dry ocean containers.
Acrow Panel Bridges are composed of both the truss systems and deck panels. This system acts as both the superstructure and decking system of the bridge. This can be brought to the job-site and installed on the bridge substructure.
There are several methods to install the Acrow 700 XS® Bridge. The most common method is to slide the bridge into place as a cantilever system from the home bank to the end bank. For this method, a launching nose must be constructed at the front of the bridge with rollers. Counterweights are added to the back end of the structure in order to keep the center of gravity from the being past the launch nose. The other common method of installation is lifting the bridge into place with the use of a crane. This option can be more difficult, but if an adequate sized crane is available, it is a plausible installation method.