California Department of Transportation, High Emphasis Routes, January 2005 California Department of Transportation, Focus Routes, January 2005 It is also eligible for the State Scenic Highway System from SR 1 to SR 16 and SR 49 to I-80, CA scenic and has been designated as such for 6 miles near the east end; accessdate=October 19, 2017 this is part of the federally designated Yuba-Donner Scenic Byway, a National Forest Scenic Byway that uses SR 20 east of SR 49.