Good info on Froli from J30 owner...(scroll down to last post by Gustavo Antonio and see comments)
https://www.facebook.com/groups/936756896500086/search/?q=froli
To answer your question...I recently traveled through DV from Shoshone in the south to Lone Pine in the north via Furnace Creek and Saline Valley. Roads were open...a little snow lingering in the north pass. This was last week, 12-16 Feb.