Yup, as of last weekend you could drive to treephones with a trailer no problem. The snow line begins there in the shade, with a few gravel patches past that.
Thinking about going there this weekend. Never been before though. Is there enough snow/area for a real ride or would it be more of a novelty ride just be in some snow? What road leads to the snow?
I think there is 5ft? Of snow.
Follow northfork ahtanum till the pavement ends. You will then be on Middle Fork. Drive up that road approximately 8 Miles turn around on the road and unload. I would not haul a trailer unless you can pick up the trailer and turn it around by yourself.