Wawona Road. Continuation of Highway 41 inside the park. Maximum vehicle length: 45 feet (for single vehicles). Height restrictions: Wawona Tunnel, into Yosemite Valley: 10 feet 2 inches at curb; from Yosemite Valley, 13 feet 6 inches at curb (the height of the tunnel at the white fogline is higher and California-legal vehicles are able to drive through the tunnel while remaining in their lane).