This bridge design would be one of wood as a building material and used as a foot bridge over moderate sized rivers and streams. It would be fairly quick to erect and easy to take down. In some cases the materials could be taken with the legion as it marched, similar to pontoons It could be expanded to take horse-drawn carts, however the main stringer beams supporting the bridge determined the weight that it could carry. The main structure could be strengthened significantly by supporting the center of the bridge with timbers under the main stringers and placed below the bridge vertically. However, this would take more time to erect, and that would only be effective if the stream bed was rock and not mud.
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