Judging by a couple of photos I could find on Google Maps it looks like in the summer the road is barely accessible using vehicles like the famous UAZ-452, I'm talking about this photo [2] showing a UAZ-452 crossing a river. In the winter I saw that these two people did it with a heavily equipped Toyota off-roader [3].
[1] https://en.wikipedia.org/wiki/Toyota_Chaser#6th_Generation_(...
[2] https://www.google.com/maps/@63.351051,140.967979,3a,75y,90t...
[3] https://www.google.com/maps/@63.258317,143.201208,3a,75y,90t...