Another update...
Just returned from a 4 day run up to visit our friends in Angel Fire. The major renovation/improvement of the 64 east from the top the grade down to Ange Fire is underway in a big way. They have linked traffic lights installed at the top and bottom of the grade along with the use of a pilot Car through what constitutes the construction zone.
Going in we hit it lucky and waited about 20 seconds at the top the grade for the next batch to descend but leaving we sat for 18 minutes waiting for the Pilot Car to escort us up and over the pass.
Iironically the bad news {being the extensive work in progress} also has a a bit of good news...
Getting back to the OP {with a 60ish' rig } you could probably easily make the descent without having to breack your toad. As you can see from the pics the orange barrels are placed about 3' into what was once the original lane making the one and only remaining lane that much wider. Add in the fact that there can be no oncoming traffic and even while the work continues the road is actually more passable {albeit with potential wait of zero to 20+ minutes}.
The other bad news is this is a very large/ambitious project that is likely to last into the end of the year but... given how early and the vengeance with which winter is likely to hit this 9,000'+ pass completion much before spring of 2024 is a very real possibility.
Here are a few pics...
Waiting for the pilot car and the requisite green light 0700 this morning:

Pushing the mountain back for the lane expansion:

Another shot:

:C