Expose those Roman road designs to today’s vehicle loads, frequency, and speed and they won’t last long either.

As for getting utility sizing right forever so that they never have to be dug up again, that’s highly impractical as communities change - they grow, shrink, densify. Industries can move in and out of an area changing demand. Regulations change. Water mains and sewers age and fail and are replaced on a schedule. When new service connections are added, workers have to get to the main. And if they’re in a tunnel large enough for workers and equipment to remove and replace utilities, we’re talking a subway tunnel under every road and large access points every thousand or so feet. Tunnels will also deteriorate, flood, etc.

I had a clapper. It would turn the light on if I coughed just right in my sleep. And the subsequent cursing at it didn’t turn the lights back off either.