Skyline DriveCheck official access before departure: Entrance fees apply. NPS lists a 35 mph speed limit in most places and a maximum clearance of 12 feet 8 inches at Marys Rock Tunnel. Weather can close sections, especially in winter. Watch for wildlife and use designated pullouts. Untimed planned road trace. Access not guaranteed. © OpenStreetMap contributors; ODbL 1.0. https://opendatacommons.org/licenses/odbl/1-0/OpenStreetMap contributors — ODbL 1.0Skyline DriveCheck official access before departure: Entrance fees apply. NPS lists a 35 mph speed limit in most places and a maximum clearance of 12 feet 8 inches at Marys Rock Tunnel. Weather can close sections, especially in winter. Watch for wildlife and use designated pullouts. Untimed planned road trace. Access not guaranteed. © OpenStreetMap contributors; ODbL 1.0. https://opendatacommons.org/licenses/odbl/1-0/