Funny how two CM's have worked on that very stretch of road in the last year or so and had it marked as a minor Hwy. Try PM'ing jhfrontz or mapcat for the unlocks. I see reverse connectivity issues that do legitimately need to be addressed but changing to a major isn't necessarily needed (it's not wrong but based on the lack of controlled turns (no lights at most of the crossings) it's not really needed either.)
I also see some problems you've introduced, they may not actually be problems if there has been recent reconstruction not visible in the aerials but if not then you broke This cross over
and This one
and a couple others in between. I'll not undo your work so far but will advise you to contact the two listed above who have worked on the road to get their opinions on the status of that road and get them to unlock it.