[2] Later, the line was extended some time after the Korean War from Koam to Sinhŭng-ri.

An extension from Sinhŭng-ri to a newly developed fishing community at T'apchol-li on the Sŏngjŏn Peninsula, via a causeway and the 600 m (2,000 ft) Sŏkchon Bay Bridge (석전만다리), was opened on 25 May 2018; the opening ceremony included an inspection of the line by Kim Jong-un.

[3] This line serves the May 27 Fishery Station at Koam, the October 3 Factory at Sinhŭng-ri, and the fishing community at Tapch'ŏl-li.

A yellow background in the "Distance" box indicates that section of the line is not electrified.

Video report on the opening ceremony and inaugural train across the Sŏkchon Bay Bridge (in Korean)