In 1955, Executive Order No. 113 was issued by President
Ramon Magsaysay, declaring the highway as a national secondary road. It was declared a national secondary road due to the recommendation of the former National Transportation Board. Therefore, the highway is currently maintained by
Department of Public Works and Highways as it was strengthened into a Department Order No. 90 in 1977. In the mid-2020s, it was upgraded to a national primary road, effectively changing its route number from N913 to N1. The N1 designation was previously assigned to the segments of the
Pan-Philippine Highway through the Davao City proper, but these sections were subsequently reclassified as secondary national roads under N916-5. == References ==