Design changes, like 10-15" roadways and better sub-road construction, have improved durability, but older roads were not built in the same manner so they suffer from failure now years down the line.
A sheepsfoot roller equipped with Intelligent Compaction equipment.
One of the most important pieces of equipment for road construction, IMO.
They’re rebuilding the 5 through town here and use those things. They are also laying down asphalt as a base and then concrete with rebar on top of that. It’s taking forever but may be worth it.