I mean, if these are caused by sinkholes, then that should have been addressed during construction. Roads can be very thick and are made of lots of different layers, each of which should be compacted very regularly and thoroughly during construction. If sink holes are common in the area, then they should have designed countermeasures to minimize their impact. My understanding of sinkholes, is that they typically form due to water phase erosion, which again, should have been known and at least partially accounted for. But, hey, I’m not a civil engineer, so I could wrong, but those definitely seem more likely to be potholes as opposed to sinkholes.