From Mazatlan north wasn't too bad on the whole but as far as Los Mochis the surface ranged from OK to pretty awful. Lots of bouncing. We had a couple of cupboards come open.
North of Los Mochis the road improved to excellent in places. Lots of construction where the entire north or south bound lanes were in the process of being or had been completely ripped up so there was two way traffic on what was/will be a dual lane highway. Traffic was moving at up to 80 Km/H in the 40 or 60 Km/H work zones! The construction and improvement continued on and off almost all the way to the Guymas bypass. NOTE!!! The on ramp to the Hermesillo route around Guymas is HORRIBLE. SLOW DOWN! The rest of it at least to the strange turnoff to San Carlos was very good.
The construction cost us probably half an hour in over all travel time from Los Mochis to San Carlos.
