Editing Gyeongjeon Line (section)

====Jinju-Suncheon====

Work started in 2003 on a 56.1&nbsp;km long section between Jinju and Gwangyang.<ref name="KNRA_2010-4">{{cite web |url=http://www.krnetwork.or.kr/service/condition/RouteMapView.do?PA_MAP_ID=12390 |title=진주~광양 복선화 |publisher=Korea Rail Network Authority |access-date=2010-10-24}}</ref> By March 2010, progress was 19% out of a budget of 1,005.984 billion won.<ref name="KNRA_2010-4"/> This section includes significant re-alignments with longer tunnels and bridges.<ref>{{cite web |url=http://www.cse.co.kr/eng/results/res_D.asp?idx=294 |title=Basic and detailed design of roadbed for double track between Jinju and Gwangyang (Section 4) |publisher=Chunsuk Engineering |access-date=2010-10-19 |url-status=dead |archive-url=https://web.archive.org/web/20110722134215/http://www.cse.co.kr/eng/results/res_D.asp?idx=294 |archive-date=2011-07-22 }}</ref><ref>{{cite web |url=http://www.samboeng.co.kr/result/result02_44_eng.html |title=Detailed Design for Jinju~Gwangyang Double Track Railway, Lot 5 |publisher=Sambo Engineering |access-date=2010-10-19 |url-status=dead |archive-url=https://web.archive.org/web/20100412115556/http://www.samboeng.co.kr/result/result02_44_eng.html |archive-date=2010-04-12 }}</ref><ref>{{cite web |url=http://www.samboeng.co.kr/result/result02_37_eng.html |title=Basic Design, Construction (Turnkey) for Railbed Construction for Jinju - Gwangyang Section Double Track Construction, Lot 6 |publisher=Sambo Engineering |access-date=2010-10-19 |url-status=dead |archive-url=https://web.archive.org/web/20100412115519/http://www.samboeng.co.kr/result/result02_37_eng.html |archive-date=2010-04-12 }}</ref><ref>{{cite web |url=http://www.cse.co.kr/eng/results/res_D.asp?idx=305 |title=Construction of double gauge railway between Jinju and Gwangyang at section 6 (T/K) |publisher=Chunsuk Engineering |access-date=2010-10-19 |url-status=dead |archive-url=https://web.archive.org/web/20110722134302/http://www.cse.co.kr/eng/results/res_D.asp?idx=305 |archive-date=2011-07-22 }}</ref> The upgrade works also commenced at the junction with the [[Jeolla Line]] east of Suncheon,<ref>{{cite web |url=http://www.samboeng.co.kr/result/result03_14_eng.html |title=Detailed Design for Dongsuncheon~Gwangyang Double Track Railway |publisher=Sambo Engineering |access-date=2010-10-19 |url-status=dead |archive-url=https://web.archive.org/web/20100412115700/http://www.samboeng.co.kr/result/result03_14_eng.html |archive-date=2010-04-12 }}</ref> this section opened on September 30, 2015. The first track of the realigned Jinju-Gwangjang section opened on April 29, 2016, followed by the second track on July 14, 2016. Electrification was put in operation on June 23, 2023. The design speed of this section is 150&nbsp;km/h.