jjinks
New member
Look in to a swinging type bridge Joseph Dice built many in Mo. They are around a hundred years old I have seen a dump truck towing a backhoe cross one no problem. They consist of concrete footings up to road grade,post on top of footings then strands of #9 Bridge wire laid side by side to form a cable around 40 -60 Strands usually. The strands are woven around a series of steel pins then encased in a concrete footing laid about 20' back from the first footings. Then use more wire to suspend the stringers from the main cables lay on those joists running from footing to footing. Then deck with local lumber.