It has been said here before - that the asphalt material we use on Oahu is woefully inadequate for the expected use that these roadways see. Not only is it the 2 ton cars going over the pavement, but also tour busses, construction vehicles (a lot more these days) and various other vehicles that force the asphalt over time to buckle and crack. 

The City & County really should look at the material used on the Big Island and try to emulate the durability of their roads. For instance, Highway 11 on the south part of the island sees all types of vehicles and temperature changes, and I have never seen it as bad as it is here on Oahu