The model is designed to be turned 90 degrees by hand in a single direction, like the prototypes. A final drive gear and micro switches are provided to convert the model into a powered bridge with the Universal Gearbox & Motor Drive Kit (933-1050), sold separately. This unit is fully assembled and designed for drop-in mounting with the bridge kit.
This model also matches the track spacing of Walthers Double-Track Truss Bridge (933-3012), so several could be used to model the approach bridges. (Typically, only one moving bridge is used in prototype situations). The Abutments (933-1037) and Wing Walls (933-1042) can also be used to detail the approach bridges and make the scene more realistic.
To prevent derailments on the span, bridges are fitted with special track sections, equipped with an inside guard rail. This detail can easily be added to your model with Walthers Code 83 Bridge Track (#948-899 with "V" end guard rails used at each end of the bridge; for a longer span with approach bridges, #948-886 with no end guard rails can be used), which features code 70 inside rails.