Not all Southern states.
Florida is an outlier in road quality both anecdotally and from this page - almost equal in quality to blue states of New Hampshire and Maine. Non-interstate Florida roads drop to 74%, lower than Alabama (which has less interstate roadways than Florida) but higher than all other Southern states and most Northern states.
1. https://www.cbsnews.com/miami/news/florida-ranks-among-top-5....