Following the Baron's audience, and the need for stone blocks and logs to build the bridge. Why not put a construction yard on the safe side of the ravine? There can be a small construction yard with a small engineering hall for turning in deeds for materials, a few forges for making nails and hardware, outfitting for gloves and aprons, alchemy for remedies to heal injuries, and enchanting for enchanting the nails and hardware to keep repel orcs and other nasties. It could be called the Therengian Construction Consortium or somesuch thing.