That's the whole point of having a national policy on transportation infrastructure ... to avoid that very scenario.
“That’s fine. Then be prepared for the day when Montana, Wyoming and the Dakotas make a democratic choice to become Canadian provinces”
WOW The myths you weave. Transportation funding and secession are not anywhere on any same page, now or ever. And besides, Wyoming and the Dakotas are even less interested that you are in all the federal funds wasted on transportation projects that benefit them not.