On second thought - and second look - we did see new construction on the Patzcuaro end but I thought they were just modifying that intersection. We had a hard time with it as we were on 14D headed toward Morelia but want off at Patzcuaro to head up to Quiroga. The intersection was all messed up so we went up 14D a bit and did a Retorno. Never occurred to me that it was going to be a whole new road.
So I looked on Google Earth to see what appears to be the start of a new road around 19.532313 -101.555.775 with an Image Date of March 2015. Looking further up the road west of 43 on 15D there is a new road there too. I looked down that road a bit to 19.873700 -101.229026 where they appear to be building a new bridge with columns in with Image Date of February 2015.
Of course that is of no help in answering your question as we did not attempt to travel that road in either direction so have no idea if it is open yet. But thanks for letting us know as it could be of use to us one of these days. There are new roads being built all over Mexico but some of them seem to take quite a while to get finished. We travel between Jocotepec at the west end of Lake Chapala up to Guadalajara and have seen evidence of a new road being built which appears to be a continuation of the road that goes down to Manzanillo but I am not sure about that - just there has been indications of construction along one area there for at least several years - concrete bridge beams being built etc - but still no road ready to travel as far as I can tell. More and more new roads all the time.