For the next six years Scott worked to get the road added to the National Register of Historic Places, and finally succeeded when, on September 25, 1997, the National Park Service added the in the forest to the National Register. He later wrote a book, "Ridge Route: The Road That United California", from the research he had done for the National Register application, that was published in 2002. The Ridge Route was also designated as a California Historic Civil Engineering Landmark by the American Society of Civil Engineers in 2008.