I guess what I was wondering is that we should match what we see, not what people say.  Usually if the road hits the water, there's some implication that it's used to launch boats and thus should be a slipway or something so someone could launch a boat into the water.  However if there's a beach or something separating the road from the water, then the drawn road shouldn't touch the water.
I'm not sure about how to map, perhaps with a scenic poi, if the government simply wants an unobstructed view of the water from the end of the road.  However extending the road to the water isn't exactly what's on the ground...