Impressive if you ask me. And you know that all of those logs went to mill as soon as they were done hauling timber across the top.From your neck of the woods Brett. Pretty sure they didn't have any ported saws to cut all them logs for the bridge.
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They used to have several temporary railways around my cabin. There are still a few cut through's where they dug out hillsides so the train did not have to go over hills. I will try to get some pics before it leafs out. The one is only a couple hundred yards from the road.
Even 20 years ago you could still find pilings across the swamp.