Earlier quoted context omitted.
The population density of Sweden is lower than the US and it has excellent roads.
Yes, that is true. The amount that the population is willing to be taxed is also an important factor however. I'm not saying that states with bad roads don't have themselves to blame, just that density is a factor.
You're saying that it's got more to do with how much the population is willing to be taxed, which I believe is the real reason.