Dig it out and see what the problem is. Could it be a bad drain pipe?

The last home we replaced the driveway on had to be done from scratch. When we removed the concrete there was no road base at all, poured over organic soil.

As the excavator was digging the duff out, going down to undisturbed soil, we "found" the builder's garbage pit at the foot of the drive.

He had done three homes in a row back in the 70's and used this one pit. By the time we had it down to undisturbed it took two full sized double axle dump trucks of pit run just to get to a point we could spread the road base.

No wonder the old driveway had cracked and heaved over that area.

$2,000 into that driveway before we topped it but you could land a 747 on it if it was longer.