In the northeastern US, they have to fix the roads every spring from damage caused by plows and frost heaving. In SF and other mild cities, there's now much seasonal component to road maintenance so roads tend to go much long between repaves.
What freeways in the northeastern US have average daily traffic volumes above 300k? Do those have alternative routes or see significant traffic volumes overnight? It's tough in Southern California because of a lack of north/south transit corridors.
Similar stories play out in cities like Seattle.