route on any average day during the year. In 2009, ADOT calculated that around 1,100 vehicles used the route daily at its northern terminus in Jacob Lake. The Federal Highway Administration (FHWA) lists the highway as a National Scenic Byway, and the National Forest Service has also designated it a National Forest Service Byway. No part of the highway has been listed in the National Highway System, a system of roads in the United States important to the nation's economy, defense, and mobility. Due to the closure of park facilities on the north rim of the Grand Canyon during winter, winter maintenance is not undertaken after December 1, with the result that SR 67 is usually closed to vehicular traffic from December 1 until spring. History SR 67 existed as a route to reach the north rim of the Grand Canyon National Park as early as 1927 as a dirt road. By 1935, the road had been improved to a gravel road, and by 1938 it had been paved. In 1941, the road was designated as a state highway and signed as SR 67. In 1985, the highway received the designation of Kaibab Plateau – North Rim Parkway as an Arizona State Scenic Byway. The designation included SR 67 in its entirety as well as extending south into Grand Canyon National Park. Two years later, ADOT obtained the right-of-way for improvement of the highway from its northern terminus approximately south. In 1989, an additional right-of-way was acquired by ADOT from its southern terminus approximately north. By June of that year, the parkway received the designation of a National Forest Scenic Byway, and in June 1998, the Kaibab Plateau – North Rim Parkway received another designation, this time as a National Scenic Byway. Since establishment, the route has not been realigned and retains its original routing. Junction list References External links SR 67 at Arizona Roads Kaibab Plateau – North Rim Parkway ADOT Flagstaff District 067 Grand Canyon, North Rim National Scenic Byways Scenic highways in Arizona Transportation in Coconino County, Arizona Tourist attractions in Coconino County, Arizona 1941 establishments in Arizona