Gov't. has absolute power to take land to build this road...end if discussion!
GOB can acquire land for (public purposes) the purpose of declaring a road - however the government will pay for the land.
There is a legal system in place to allow the government to declare an acquisition - obviously such things can be appealed - however in the instance of the road to run from town heading north the fact of the matter is that the road is necessary and will become a reality.
When we sold land in areas where there hasn't been a designated roadway we have always warned our clients that a road will be declared at some point, therefore be prepared and plan your structures accordingly.