I just spent the last week in Monache Meadows, where the airstrip still exists. I was staying at a Forest Service cabin very close to it. Although I did not walk over to it, it appeared to be in good condition.

Here is an interesting pilot's thread that talks about the airstrips in the area:

http://www.backcountrypilot.org/forum/viewtopic.php?f=1&t=97