If this is public or some easement or agreement gives public access, then it needs to be maintained. Tired of hearing about private owners, giving access in trade for tax breaks, road or trail improvements, then closing it off. This is also a problem on public lands, leased for grazing, then fenced and attempted to be closed to public, which is wrong and not part of the grazing rights. STOP CLOSING OFF OR BLOCKING ACCESS TO PUBLIC LANDS.
> agreement
IANAL, but I doubt that written agreements are needed for such a case of the owners NOT prohibiting access for maybe 100 years or more.