Like I said earlier, the rut is controlled by the pavement.
You do know why the State uses roads and natural features, right?
N2--I would have a guess, but the roads weren't built with the future rut taken into consideration.
That's true, but it's hard to delineate a line that can't be seen in the field. Roads and rivers, etc. are easier to police/delineate than county lines. As these late rut areas expand, I would look for them to be delineated by such physical features. Not saying it's a perfect system.