Supreme Council for National Reconstruction
Work on the line began already in October 1959. Following the 1961 coup, the Supreme Council for National Reconstruction started South Korea's first five-year plan, which included a construction program to complete the railway network, to foster economic growth. The line from Neunggok on the Gyeongui Line to Uijeongbu on the Gyeongwon Line was incorporated into the program and was completed on August 20, 1963.