Oh please. Nothing screws up hiking trails worse then those freaking shyt spewing four legged nags.
I said our system works really well in Capitol Forest, and I mean it. They have a whole side of the forest of their own.
I'll concede that horses can do some damage to low wet trails during the wettest season. Well managed trails are closed to horse traffic during the worst times of year, or are well constructed to take the traffic, or both. I might also add that in Capital Forest, it is the horseman groups who do much of the volunteer trailhead and trail clean up on their side.
I pass lots of hikers and bicycles on the non-motorized side, I don't know how many hikers, who can use either one, choose the ORV side.