c. Bridges. Rope bridges are employed in mountainous terrain to bridge linear obstacles such as streams or rivers where the force of flowing water may be too great or temperatures are too cold to conduct a wet crossing. (1) Construction. The rope bridge is constructed using a static ropes. The max span that can be bridged is 50 percent of the ropes entire length for a dry crossing, 75 percent for a wet crossing. The ropes are anchored with an anchor knot on the far side of the obstacle, and are tied off at the near end with a transport tightening system. Rope Bridge Planning Considerations are as follows: Does the installation allow you to bypass the obstacle? (Tactical considerations) Can you secure the installation from construction through negotiation, to disassembly? Is it in the most suitable location such as a bend in the river? Is it easily secured? Does it have near and far-side anchors? Does it have good loading and off-loading platforms? (2) Equipment (1-Rope Bridge). One sling rope per-man. One steel locking carabineer. Two steel ovals. Two 120-foot static ropes.