... and a little cruising on Google Earth; appears to be "9-mile Canyon Road", approaching 395.

Behind you is the Golden Trout Wilderness, ahead Owens Valley.

The road changes names a lot; Kennedy Meadows Road, Sherman Pass Road, ...

A VERY little known X-Sierra route between Tioga and Walker Passes.

Thanks for the clue (and yet ANOTHER road I have to check out in person someday)!