Does anyone know what this is? I thought it was some sort of temporary bridge, and the folks at BridgeHunter don't seem to know either. Sitting in a field in Cass County, Mo.
http://bridgehunter.com/mo/cass/mystery/ (http://bridgehunter.com/mo/cass/mystery/)
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fbridgehunter.com%2Fphotos%2F19%2F10%2F191080-M.jpg&hash=b0f921f15e6fa29a1b02db29f47b24e43c3b294d)
(Image from bridgehunter)
Could it be related to the former quarry just to the south?