The Streets of San Diego

I ride a bike a lot around San Diego and the streets and pavement surfaces are, for the most part, a joke. Potholes filled with water (I assume coming from somewhere below), asphalt seams everywhere, holes appearing randomly, etc. My favorite, aside from the mammoth hole that was dug and just filled on Grand Ave. in Pacific Beach, was the entire repaving of La Jolla Blvd. in Bird Rock. The entire main drag was completely redone in front of a ritzy new housing development called SeaHaus. These are upscale condo homes with ocean views if you have a top unit blah, blah. Anyway the work was done last August and the street is already falling apart. There are potholes and the fancy crosswalks are simply crumbling away -- I have never quite seen anything like it. Now I know that this is a sandy foundation kind-of-environment but don't professional road contractors know how to deal with this? I remember nothing like this in San Francisco.