Those roads in the linked Streetview are from 2013, btw. As they were a) low traffic and b) prone to liquefaction in aftershocks, they were low priority for repairs.
No, you’re right - as an earlier comment said, the red zone roads are not maintained anymore since the area was demoed and they are currently pretty munted.
I can’t say that the rest of the city is pristine but it is a good bit better.