We went through on Thursday - left the campground (Chinook RV Resort) shortly after 9am and got in line. There were 15 vehicles ahead of us in line, waiting for the road to open at noon. I must say they were prompt: it was exactly 12:00:00 when we started moving! We got through the one-way section and then saw the line waiting to go south: almost 5 miles long! According to the handout we got at the RV Park the road is closed on Monday through Thursday from 8am to noon, and from 3pm to 7pm. All other times it is open to one-way traffic - controlled.