Stevens Pass in Washington state is on State Route 2 and located on the crest of the Cascade Range. Stevens is located on two national forests, the Mt. Baker-Snoqualmie on the west side of the crest and the Wenatchee National Forest on the east. Typical snowfall is in the 450 inch range.
I went through in early May 2010 and had the pleasure of being in the middle of a decent late spring storm. Of course this destroyed all chances of photographing the BNSF as you could not really see (even if I known where to go).

This is the approach from the east.

Then the snow line is crossed.

Then it gets serious all the way to the crest.
