국가재건최고회의
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 Gangwon Bukbu Line, a railway along the eastern coast from Mukho to Gyeongpo-dong in Gangneung, the endpoint of a narrow-gauge railway to Sokcho, was opened until 1962 as follows: