Sinansan Line


The Sinansan Line is the tentative name of a commuter rail line that will eventually link Cheongnyangni station with western Gyeonggi province, passing through key areas of the Seoul metropolitan area, including Yeouido, Yeongdeungpo and Gwangmyeong station, scheduled to open in December 2026.

Planning

The forerunner of the Sinansan Line was Line 10, proposed in 1994 as part of Seoul Metro's Phase 3 expansion but was mostly unbuilt due to the 1997 Asian financial crisis. Originally Line 10 was also planned to extend east beyond downtown Seoul going through either Sinchon, Dongnimmun and Hyehwa or pass through Gongdeok, Seoul Station and Dongdaemun Stadium. However, following the restoration of the Cheonggye Stream, under which Line 10 was planned to be laid, the former route seems much more likely.
The Sinansan Line underwent many design changes during planning stages, but generally the line was envisioned to run between Sinpung and Gwangmyeong station. In particular, the section south of Gwangmyeong station has led to heated disputes between the cities of Ansan and Siheung. Ansan has requested for the line to be built almost perfectly south from Gwangmyeong station so it terminates at Hanyang Univ. ERICA Campus, passing through Seongpo-dong on the way. This would also open the possibilities for the trains on this line to travel to Suwon via the Suin Line. The consortium behind the construction of the Sin Ansan Line, however, favors a line running southwest from Gwangmyeong station and joining the Sosa-Wonsi Line, transferring with Line 4 and the Suin Line at Choji station and terminating at southwestern Ansan. The city of Siheung proposed the section in dispute does not even pass through the city of Ansan at all, making the name "Sinansan Line" meaningless. The Siheung plan has the section go west from Gwangmyeong station, intersect the Sosa-Wonsi Line at Siheung City Hall, and terminating at Wolgot station.
Construction was planned to begin in 2015 with the first section of this line is set to be opened in 2023. However, contract disputes between the Ministry of Land, Transport and Maritime Affairs and the preferred operator delayed the project and lead to a retendering.
Construction of Phase 1 began 2019 September 9.

History

  • 2007 June 7: Feasibility Study Announcement
  • 2007 June 5: The Primary Route Announced
  • 2008 March 20: Second Route Announced
  • 2009 November 3: Confirmed Gwangmyeong Southern Section Final Route
  • 2010 December 15: Master Plan Presented

Accidents

On April 11, 2025, a construction site of the line in Gwangmyeong collapsed, trapping two construction workers inside. Authorities have ordered evacuations for nearby residents. One was rescued on the next day while another was found dead after five days of searching.

Stations

NOTE: The Ministry of Land, Transport and Maritime Affairs announced the station list on December 15, 2010, routes are finally announced on 2015.
Station
Number		Station Name
English		Station Name
Hangul		Station Name
Hanja		EXTransferStation TypeLocationLocation
Seoul Station 서울-驛 UndergroundSeoulJung-gu
Gongdeok 공덕孔德 UndergroundSeoulMapo-gu
Yeouido 여의도汝矣島● UndergroundSeoulYeongdeungpo-gu
Yeongdeungpo 영등포永登浦●UndergroundSeoulYeongdeungpo-gu
Dorimsageori 도림사거리道林사거리|UndergroundSeoulYeongdeungpo-gu
Sinpung 신풍新豊●UndergroundSeoulYeongdeungpo-gu
Daerimsamgeori 대림삼거리大林삼거리|UndergroundSeoulGuro-gu
Guro Digital Complex 구로디지털단지九老디지털團地●UndergroundSeoulGuro-gu
Sindoksan 신독산新禿山|UndergroundSeoulGeumcheon-gu
Siheungsageori 시흥사거리始興사거리|UndergroundSeoulGeumcheon-gu
Seoksu 석수石水●UndergroundSeoulGeumcheon-gu
Gwangmyeong 광명光明●KTX Gyeongbu, Honam & Gwangmyeong Shuttle UndergroundGyeonggi-doGwangmyeong-si
Mokgam 목감牧甘|UndergroundGyeonggi-doSiheung-si
Seongpo 성포聲浦|UndergroundGyeonggi-doAnsan-si
Jungang 중앙中央●
Suin-Bundang Line		UndergroundGyeonggi-doAnsan-si
Hosu 호수湖水|UndergroundGyeonggi-doAnsan-si
Hanyang University ERICA Campus 한양대에리카캠퍼스漢陽大에리카캠퍼스●UndergroundGyeonggi-doAnsan-si