sentences:  Just west of Rockfish Gap, US 250 has a trumpet interchange with I-64, then curves east to the gap itself on the Augusta–Nelson county line.There, the highway has an interchange with the southern end of Skyline Drive, the primary highway through Shenandoah National Park, and the northern terminus of Blue Ridge Parkway.The highway descends the Blue Ridge as Rockfish Gap Turnpike, which runs parallel to I-64 and meets the western terminus of SR 6 (Afton Mountain Road) at Afton before entering Albemarle County.