Thanks for the updates Jim.
Tellico started having seasonal closures in the mid-2000s, kinda similar to the Mounds. I think they did it one or two years.
Then Trout Unlimited file suit against the Forest Service saying that the ORV area was the cause of too high of silt levels in the local river. The Forest Service responded by closing the area to allow for a study with a promise to reopen. It has not been open since.
Southern Four Wheel Drive Association (SFWDA), UFWDA, Blue Ribbon and other groups have been fighting to get it reopened.
Currently they are trying to sue for illegal closue, as SFWDA hired an independent engineering firm that showed water levels were within limits.
Since closing the park, Trail 1 that connected NC to Tennesee has been paved (literally) for thru traffic. The area is being extensively logged, and pictures show that little to no changes have been made to reduce the silt that was the original reason for closing the area to ORVers.
There is a Tellico section on pirate4x4 that has pictures from a few years ago of the logging operation.