They look to be in better condition than any road in the northeast after one winter.
The Appian Way (originally 4th c BC) is the one most often seen by tourists I think, butt it was a busy route in Roman times, and was repaired perhaps five times (at least stretches were). Its current condition is passable, not bad considering the Emperor hasn't sent out repair crews in a while. :^)
The climate helps somewhat. OTOH, there are Roman bridges in Spain that remained in use for vehicular traffic until about 40 years ago.