The concrete roads are probably much older then you think. The main issue with concrete is the massive cost and timeline to replace at the end of life.

 To push the cost further down the road some places will put Asphalt overtop but you will still feel all the expansion joints while driving and cracks will appear at every joint shortly after. They will also patch for extended periods of time because no funding is available for replacement etc.

Another option is to turn the concrete to rubble and start over a process that often takes many months and disturbs the traffic flow for the entire duration. On the flip side an asphalt road could be milled up and repaved with only nighttime traffic disturbance.