Editing Gyeongwon Line (section)

==History==
{{For|the original line's history and other information prior to 1945|Gyeongwon Line (1911–1945)}}

One of the first construction projects undertaken by the Railway Bureau of the [[Governor General of Korea|Government General of Korea]] was for an east−west trunk line to connect [[Keijō]] to the important port of [[Wonsan]]. The [[Chosen Government Railway]] (''Sentetsu'') opened the line in several stages between 1911 and 1914.<ref name="lineop">{{cite web |url=http://info.korail.com/mbs/www/subview.jsp?id=www_010606060000|title=경영원칙 > 경영공시 > 영업현황 > 영업거리현황 |publisher=[[Korail]] |access-date=2015-09-17}}</ref> The first section of mainline to be electrified by Sentetsu was also along the Gyeongwon Line, with the [[Pokkye station|Pokkye]]−[[Kosan station|Gosan]] section being energised on 27 March 1944,<ref>{{cite web|url=http://ameblo.jp/gon-xiaodao/entry-11081690203.html|title=『デロイを探せ！（その8）デロイ就役の経緯（年表）』}}</ref> as part of a plan made jointly with the [[South Manchuria Railway]] for an electrified railway all the way from [[Busan]] to [[Changchun|Xinjing]], capital of [[Manchukuo]].<ref name="Matsuda">{{cite web|url=http://ktymtskz.my.coocan.jp/denki/matuda.htm|title=松田新市三菱電機技師の戦中戦後の電気車設計|website=ktymtskz.my.coocan.jp}}</ref>

After the [[partition of Korea]] following the end of the [[Pacific War]] in 1945, the Gyeongwon Line was split along the [[38th parallel north|38th parallel]] between the stations of [[Hantangang station|Hantangang]] and [[Choseong-ri station|Choseongni]].<ref name="Hayato">Kokubu, Hayato, 将軍様の鉄道  (Shōgun-sama no Tetsudō), {{ISBN|978-4-10-303731-6}}</ref> The railways in both South and North were nationalised, and the newly-established [[Korail|Korean National Railroad]] took over operation of the truncated Gyeongwon Line, from Seoul to Choseongni; in the North, the [[Korean State Railway]] merged its section of the Gyeongwon Line, Choseong-ri−Wonsan, with the Wonsan−[[Kowon station|Gowon]] section of the former [[Hamgyeong Line]] to create the [[Kangwon Line|Gangwon Line]].<ref name="Hayato"/>

The line was severely damaged during the [[Korean War]]. After the ceasefire and the subsequent establishment of the [[Military Demarcation Line]], the division of the line changed, with the South gaining control of the line further northwards as far as [[Woljeong-ri station|Woljeongni]]. However, the line was rebuilt only as far as [[Sintan-ri station|Sintalli]], resulting in an operation line from Yongsan and Sintalli with a length of {{convert|88.8|km|abbr=on}}.<ref name="lineop"/>

Following the 1961 coup, the [[Supreme Council for National Reconstruction]] started South Korea's [[Five-year plans of South Korea#1962–1966|first five-year plan]], which included a construction program to complete the railway network, to foster economic growth.<ref name="5yr-plan">{{cite web |url=http://www.silvernet.ne.kr/?design_file=article_v.php&category_1=~00003&category_2=00016&OTSKIN=layout_prt.php&PB_1291266761=8&article_num=7653 |title=철마 110년, 영고의 자취 [12] 경제개발과 철도 |language=ko |date=2010-03-20 |publisher=Silvernet News |access-date=2015-09-17 }}{{Dead link|date=January 2020 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> As part of the program, in the outskirts of Seoul, a {{convert|4.9|km|mi|abbr=on}} long avoiding line was built from [[Kwangwoon University station|Kwangwoon University]] to [[Mangu station|Mangu]] on the [[Jungang Line]], called the Mangu Line, which opened on December 30, 1963.<ref name="5yr-plan"/>

===Upgrade===
<!-- [[Korea Train Express#Further upgrades of connecting conventional lines]] links here-->
The section of the Gyeongwon Line in the Seoul metropolitan area was among the first to be electrified with the 25&nbsp;kV/60&nbsp;Hz [[Alternating current|AC]] [[Overhead wires|catenary]] system in South Korea when to allow for [[through train]] services with [[Seoul Subway Line 1]]. Further sections were electrified and urban services to [[Seoul Subway Line 1|Line 1]] was extended in the 1980s and then in the 2000s:<ref name="electrification">{{cite web |url=http://www.epic.or.kr/cont/yearbook/download/yearbook_chap07_3.pdf |title=Electricity Almanac 2009 |publisher=Korea Electric Association |access-date=2015-09-17 |archive-url=https://web.archive.org/web/20120314033522/http://www.epic.or.kr/cont/yearbook/download/yearbook_chap07_3.pdf |archive-date=2012-03-14 |url-status=dead }}</ref>

{| class="wikitable"
|-
! Section !! Length !! Electrified rail operation commenced
|-
| Cheongnyangni–[[Kwangwoon University station|Kwangwoon Univ.]] ||align="right"| 5.6&nbsp;km || August 15, 1974
|-
| [[Yongsan station|Yongsan]]–[[Cheongnyangni station|Cheongnyangni]] ||align="right"| 12.6&nbsp;km || December 9, 1978
|-
| Seongbuk–[[Chang-dong station|Chang-dong]] ||align="right"| 3.6&nbsp;km || April 25, 1985
|-
| Chang-dong–[[Uijeongbu station|Uijeongbu]] ||align="right"| 9.4&nbsp;km || September 2, 1986
|-
| Uijeongbu–[[Ganeung station|Ganeung]]<br /><small>then Uijeongbu Bukbu</small> ||align="right"| 1.2&nbsp;km || October 5, 1987
|-
| Ganeung–[[Soyosan station|Soyosan]] ||align="right"| 23.2&nbsp;km || December 15, 2006
|-
| Soyosan-[[Yeoncheon station|Yeoncheon]] ||align="right"| 20.87&nbsp;km || December 16, 2023
|}

Altogether {{convert|55.6|km|mi|abbr=on}} of the line was electrified, and {{convert|53.1|km|mi|abbr=on}} was double-tracked.<ref name="lineop"/>

On September 1, 2010, the South Korean government announced a strategic plan to reduce travel times from Seoul to 95% of the country to under 2 hours by 2020. As part of the plan, the Gyeongwon Line is to be further upgraded until Uijeongbu for 230&nbsp;km/h and may see [[Korea Train Express|KTX]] service.<ref name="plans2020">{{cite web |url=http://joongangdaily.joins.com/article/view.asp?aid=2925474 |title=Bullet trains coming to a town near you by 2020 |date=2010-09-02 |publisher=[[JoongAng Daily]] |access-date=2010-10-27}}</ref>
<!--The source is apparent, but this plans2020 is nearly impossible to be realised. Because the line should be altered for such high speed.-->

In 2012 restoration of the line was completed between [[Sintan-ri station|Sintan-ri]] and [[Baengmagoji station|Baengmagoji]].<ref>{{cite web|url=http://english.kr.or.kr/sub/info.do?page=010102&m=010102|title=History|publisher=Korea Rail Network Authority|access-date=2015-09-17}}</ref>

On December 16, 2023, a single-line railway between Soyosan and Yeoncheon opened on the Seoul Metropolitan Subway Line 1.