So I know you're exaggerating but the interstate highway system was literally created to address the inadequacy of existing highways in the event of war to evacuate citizens and move nukes around. There are certain standards they have to adhere to - for example the S-bends on I-79 between Robinson and Neville Island have a lower speed limit and rollover warning because they exceed those tolerances due to having to snake through the hills. And trucks regularly flip there, still.