Polk County and Saluda are infamous among railroad enthusiasts for the Saluda Grade, the steepest standard-gauge mainline railway grade in the United States.Saluda Grade - North Carolina Highway Historical Marker Program Norfolk Southern suspended freight traffic indefinitely along this route in December 2001. The track remains in place, but are cut near Flat Rock, North Carolina and Landrum, South Carolina.
Polk County and Saluda are infamous among railroad enthusiasts for the Saluda Grade, the steepest standard-ga,uge mainline railway grade in the United States.Saluda Grade - North Carolina Highway Historical Marker Program Norfolk Southern suspended freight traffic indefinitely along this route in December 2001. The track remains in place, but are cut near Flat Rock, North Carolina and Landrum South Carolina.