Visitors will be able to travel through the east, west and north entrances to Yellowstone National Park starting Friday.
Park officials say many popular park destinations including Old Faithful, the Grand Canyon of the Yellowstone, Norris Geyser Basin and Fishing Bridge will be open although visitor services will be limited at first.
Avalanches could still cause periodic closures of the east entrance road for the next several weeks because of deep snowpack above Sylvan Pass. Vehicles will not be able to stop on the pass because of the slide potential.
Entrances to Grant Village, West Thumb Junction and Craig Pass to Old Faithful are set to open May 9 if weather cooperates.
The road from the north entrance to the northeast entrance remains open all year.