Highways...

[Tiberius Claudius Marcellus]

Slightly related,

I have always wondered why some "buildings" (like roads) could not be destroyed when you conquered a province. I understand that things like the Pillars of Herakles and other natural things would just be too huge and therefore literally impossible to destroy.

Is that the thought process behind not being able to destroy roads in provinces, or is it more symbolic of how the infrastructure has become so ingrained and necessary to the culture and day-to-day living of the inhabitants that to destroy it would be like sending them into the dark ages (not necessarily a bad thing, IMO, if the enemy was particularly hated)? Is it a hardcoded issue that will crash the game?