[advrs]

The difference is that the interstate highway system was not simply built for mass civilian transit, but as part of a post-WW2 initiative, functioning as emergency landing strips and providing easier access between airports, seaports, rail terminals, and military bases (which tend to reside near interstate highways).

[bewbaloo]

the whole “emergency landing-strip” thing is a myth btw

[Xylakant]

In the US that’s true (according to Wikipedia), but in a lot of places around the world, landing strips on the highway used to be (or still are) a thing. https://en.m.wikipedia.org/wiki/Highway_strip

[bewbaloo]

yeah, i would think that, generally (maybe even universally), the interstate roads in the us are neither wide nor thick enough to support aircraft. i didn’t realise that there are countries that actually did this though; that’s pretty neat.