The rock slide is at about the 7,800 elevation. I don't know the elevation of the usual winter closure. Apparently, it is possible to walk around the slide and go on up to the portal, but parking on the road downhill from the slide will probably not be possible except at a few locations. Even then overnight cars in some locations end up being cited by the S.O. or CHP.
The way this winter is going, there will still be considerable snow in April, according to DWP and SCE. Snow surveys have begun and will provide more accurate data when they have been completed.
Try for June or July.
