The Montana Supreme Court has affirmed a traditional rule of property law that express easements are presumed to be permanent even if they are created for reasons that later cease to exist. In this case, the easement was originally necessary to link the property to a public road. When such easements are not created expressly, courts imply them over remaining land of the grantor to ensure that properties do not become landlocked. Such easements traditionally last as long as the necessity lasts. Express easements however are permanent even if created to link a landlocked parcel to a public road and the necessity ends because another means of access (over land of a stranger to the title) becomes available. Woods v. Shannon, 344 P.3d 413, 2015 MT 8 (Mont. 2015).