A good comparison point would be Germany. It has a very large network of roads too, some designed for very high speeds, and a strong driving culture (perhaps stronger than the continental US).
I'm an American, I lived in Germany for several years around the turn of the century. German roads that I encountered were far superior to American roads. Their construction is far more robust, the roads last much longer. And with German lane discipline (passing someone on the right is practically a cultural taboo, it's a prohibition that's taken quite seriously) they are usually a joy to drive on.