If the gate was locked, how did the horsemen get their stock around it? If the road is on his property and unless it had historic public use for govt service (i.e. mail or school bus), it is his road. I suspect the USFS may have had a temporary arrangement to use the road (if they even used it). If the USFS built the road, then the farmer may be required to allow public use. There has been a lot of Montana courtroom activity on that issue in recent decades and most of the closures of historic use roadways (usually by transplanted phony "ranchers") have been revoked. I can understand the rancher closing the road if govt ceases to maintain it. I see many situations where BMA ranchers have closed roadways on their property and almost always it's because hunters won't stay off them when they're wet. I know one guy that puts up a sign saying stay off the access road when it's muddy. Yeah right! The assholes go ahead and tear up the place anyway. I confronted two douchebags from Washington a few years ago. "We signed in so we have a right to hunt however we choose. That's why the rancher is getting paid." I felt like shooting the tires out. But decided to save my ammo. I knew what was in store for them. They spent most of the rest of the day trying get unstuck. By late afternoon both men and their truck were covered with gumbo top to bottom.