If the gates are open and not operational, and the road is not ditched, you can drive on them. However, if the gate is operational, you have to call the weyerhauser hotline and see if it is open to drive on. Usually the main line road gates are open on the weekends, but closed during the week, even if they are standing open. Weyerhauser has ongoing operations and they leave the gates open for log trucks etc...