I found out about snow gates in Wyoming in 1984. Even better than a van, I was on a 900 Kawasaki coming home from Seattle. I'd been riding in rain/snow for about 75 miles when I pulled off in Sheridan. They closed the gates behind me and I was in Sheridan from Wednesday until they opened the gates on Saturday. I had to push the bike out to the street because the motel parking lot hadn't been plowed. I was much younger (25) then. I can't believe I made it.