We cleared the trees from the ROW about 10 years ago.
The dam south of Cross road was, I think I have heard, put in in the 50s. Road access is a road direct from 218. The water level should by rights be about 5 feet below the level it is now, but because of branches, stumps, and other junk in front of the outflow pipes there's very little water flowing through it. Lower the water level and you probably find the roadbed again.