BLM Public Lands are often fragmented and access to them can be difficult. Unless you can get to your destination via a legal public access route, private land owners can rightfully prevent you from crossing their land to access adjacent Public Lands.
A federal permit holder, grazing or recreation (outfitter), may not exclude you from Public Lands within their lease area. Permitees cannot charge the public for the privilege of using Public Lands or sign the land as being Private.
Land managers also may restrict travel for the protection of sensitive or critical resources, for public safety, or to meet special management needs.
Know your access routes in advance of your trip or check with local land management agencies to determine if public access exists to areas you want to visit. Immediately report access problems to the appropriate land management agency.