Route from Bahia de kino to Puerto Penasco

We just traveled the Costera from Puerto Penasco to Kino Bay in a 35' class A with toad. In general, the road is reasonable from Puerto Penasco to Puerto Libertad. There are pot holey sections coming out of Puerto Penasco, but then it good till Puerto Libertad. About 20 mls out of Libertad there is a washed out section with a detour onto packed sand/ mud. We had to crawl through this at idle speed for maybe 5 mins. There was a long stretch of broken pavement and potholes which gradually improved as we got closer to Kino. It took us 6 hrs, and saved the hassle and time of going through Hermosillo. I would not want to try it in wet weather or a larger vehicle.