NPS has the gate closed to the HP loop. The closed loop road does not appear to have been treated or seen car traffic. Therefore the loop road has significant patches of ice and snow. It does not appear to be safe for road bikes wishing to do loop laps. In addition, in order to get around the closed gate you must bike up and over the snow covered grass.
On the plus side, with HP essentially closed, the red fox was highly active and was making many appearances.