I rode from the Sisters side up to within 2 miles of the Observatory on Friday. The snow is still 8 feet deep up there, but a 1-lane track is available for cyclists. Rumor has it that it will be open all the way across within the next 2-3 weeks (for cyclists and people on foot). Bring booties and knee warmers if you go, even on a warm day. You will be riding through puddles of snowmelt. They probably only have about 7 more miles of snow removal to go. Also, I rode up toward Three Creeks Lake: it is still snow-blocked past the 11-mile gate, but the snow is rapidly receeding. Just snow patches here and there at this point.