"Chad Irby" wrote in message
. ..
If you're
addressing the engineering aspect, you should look at why they built the
Interstates so much wider and thicker than trucks of the day needed, by
a large factor.

I think it's more of a case of "plan on using roads for temporary
fighter fields if we need to."

Actually, the engineers who designed the roadbeds thought ahead to heavier
/bigger vehicles using the highway systems.

I've scanned the laws that brought the highway system into being, and there
isn't ONE, not ONE, reference to using them as runways for military
operations. There are references to making sure they were X feet wide and
could support vehicles of Y weight, but they were thinking about Army
equipment being transported and not airplanes.