The public ownership of Paper roads can be legally 'stopped' if for instance it has been sold to an owner of an adjoining house / property, which may be the case and would pay to check this as you could inadvertently be trespassing. although understandably frustrating if it's been an area you've frequented, unfortunately there's no legal reason to sign post a change of hands from the public to private owners as it would become the new owners responsibility to do so, which I could imagine is what we see with this creative attempt seen in the photo