In response to an earlier post of mine about a trip I'm planning south of Glacier Point Road for 2021, another member posted that GPR would be closed for reconstruction. Alarmed, I checked the NPS website and found that the reconstruction is planned for 2022, so I'm good for next year.
Here's the webpage:
https://www.nps.gov/yose/planyourvisit/gproadfaq.htm