The Uinta snowpack remains quite fat. The numbers from the Trial Lake Snotel, very near the Mirror Lake Highway, show an early May peak in snowpack snow water equivalent just under 50 inches, roughly double the median peak. Despite some losses in the middle of the month, they currently sit over 30 inches, again roughly double median.
If the road does open, you're going to find an impressive snowpack by Uinta standards. If not too snirty, there's going to be a good corn harvest up there over the next couple of weeks.