Despite its heavy winter snows, the pass is kept open all year, except during and just after winter storms. When closed, the snow route is a long detour around the east-northeast end of the park, using U.S. 321 and Interstate 40. The Tennessee side typically has heavier snow because of its north and northwestern exposure. Even when valley roads are clear and there is little snow in Gatlinburg (and almost none in Cherokee), Newfound Gap may have far deeper snow, and will be closed for several hours after significant snowfall ends. Additionally, being in a national park, Newfound Gap Road is only treated by snowplows and a gravel-sand mix, as no chemicals can be used for snow removal due to their harm to the environment.