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| Seoul Subway Line 5 | |
|---|---|
| Name | Line 5 |
| Color | #9B5DE5 |
| Type | Rapid transit |
| System | Seoul Metropolitan Subway |
| Status | Operational |
| Start | Banghwa |
| End | Hanam Geomdansan |
| Stations | 51 |
| Open | 1996–1999 |
| Owner | Seoul Metropolitan Government |
| Operator | Seoul Metro |
| Character | Underground |
| Depot | Banghwa Depot |
| Line length | 52.3 km |
| Electrification | 1,500 V DC overhead catenary |
Seoul Subway Line 5 is a rapid transit line in Seoul forming an east–west trunk through central South Korea, linking western Gangseo District with eastern Gangdong District and beyond into Hanam; it is a central artery of the Seoul Metropolitan Subway network. The line connects major nodes such as Yeouido, Yeongdeungpo-gu, Gwanghwamun, Jamsil, and suburban interchanges with Line 2 (Seoul Subway), Line 1 (Seoul Subway), and Airport Railroad Express. Built to relieve congested corridors and to provide cross-river connectivity under the Han River, the line integrates with regional transport hubs including Seolleung Station, Yongsan Station, and Seoul Station corridors.
Line 5 runs beneath the Han River and through central administrative, financial, and cultural districts including Yeouido, Jongno, and Gangnam, providing interchanges with rapid transit lines such as Bundang Line, Suin–Bundang Line, AREX, and Gyeongui–Jungang Line. The corridor serves major institutions like National Assembly of South Korea, Blue House (Cheong Wa Dae), KBS (Korean Broadcasting System), and commercial centers such as Times Square (Seoul), COEX Mall, and Lotte World. As part of the Seoul Metropolitan Subway network, Line 5 contributes to multimodal connections with Incheon International Airport services and regional commuter flows to Gyeonggi Province.
Planning for Line 5 emerged during the rapid urbanization era under administrations including Roh Tae-woo and Kim Young-sam to expand east–west capacity across Seoul and into satellite cities like Hanam. Construction involved engineering coordination among agencies including Seoul Metropolitan Government and contractors experienced from projects such as Seohae Line and Bundang Line extensions. Sections opened progressively between 1996 and 1999, contemporaneous with infrastructure projects like the Seoul-Busan high-speed rail (KTX) mobilization and urban redevelopment initiatives in Yeongdeungpo District and Songpa District. The line’s completion paralleled civic events such as the 2002 FIFA World Cup preparations, enhancing access to stadia and hospitality zones.
The alignment begins at Banghwa Station in Gangseo District, traverses eastward through interchange stations including Gimpo International Airport access corridors, passes financial and political centers at Yeouido Station and Gwanghwamun Station, then crosses the Han River to serve commercial hubs in Jamsil and residential zones in Gangdong District before terminating at Hanam Geomdansan Station. Major transfer stations include Yeongdeungpo-gu Office Station for connections to Line 2 (Seoul Subway), Gwangnaru Station for riverfront access, and Cheonho Station linking to local bus rapid transit near Olympic Park. Station designs reflect influences from projects like Gangnam Station redevelopment, with concourses integrated into shopping complexes such as Times Square (Seoul) and proximate cultural sites like National Museum of Korea.
Operations are managed by Seoul Metro with scheduling coordinated alongside operators of Korail commuter services and private entities running special services. Rolling stock consists of electric multiple units built by manufacturers involved in Korean projects such as Hyundai Rotem and earlier collaborations linked to Daewoo Heavy Industries. Trains operate under 1,500 V DC overhead catenary, using signaling systems compatible with standards seen on lines like Line 2 (Seoul Subway) and interchanges with AREX. Depots and maintenance facilities located at Banghwa Depot handle fleet servicing, while control centers coordinate with traffic management systems comparable to those used on Seoul Station complexes.
Line 5 provides all-day frequent service with peak headways comparable to those of Line 2 (Seoul Subway) and rush-hour capacity planning influenced by models from cities such as Tokyo and Singapore. Ridership patterns show heavy flows at transfer nodes like Yeouido and Gwanghwamun, and commuter surges tied to employment centers including Yeongdeungpo District and educational institutions near Jongno District. Annual ridership metrics are analyzed alongside metropolitan transport statistics from agencies like Ministry of Land, Infrastructure and Transport (South Korea) and forecasts used in planning for projects similar to the Second Seoul Ring Road and GTX (Great Train eXpress) proposals.
Line 5’s civil works include deep-bore tunneling beneath the Han River using technologies refined from earlier urban tunnel projects such as the Incheon Grand Bridge and techniques employed during construction of the Seongsu Bridge rehabilitation. Stations incorporate platform screen doors and CCTV systems matching safety initiatives associated with Seoul Metropolitan Government policies and national standards administered by the Korea Transport Institute. Power supply, ventilation, and emergency egress adhere to frameworks developed after incidents involving urban transit elsewhere, and interoperability with systems like AREX requires standardized fare and gate technologies integrated with T-money contactless payments.
Proposals for capacity increases and spurs to growing suburbs reference planning by entities such as Gyeonggi Provincial Government and coordination with projects like the Shinbundang Line and Seohae Line extensions. Potential upgrades consider signaling modernization akin to projects on Line 9 (Seoul Subway) and procurement of new rolling stock from firms including Hyundai Rotem or international consortia that supplied the KTX fleet. Regional redevelopment around termini such as Banghwa and Hanam is likely to trigger station-area transit-oriented development initiatives modeled on redevelopment seen at Yeouido and Gangnam Station districts.
Category:Seoul Metropolitan Subway lines