China's road infrastructure is all much newer than most other developed nations. And since it was built later I imagine the materials and civil engineering undergirding them is better.

However, the bill always comes due eventually for reinforced concrete. It's currently coming due in most of the west now from all the freeway building that happened in the 50s.

China still has a long time til they're in the same place, and it will be interesting to see if they learned the lessons of not deferring maintenance.