SEOYOUNG ENGINEERING

Since first participating in the Gyeongchun Line Double-Track Electrification Project under a turnkey contract in 1999, Seoyoung Engineering’s Railway Division has undertaken a wide range of railway projects for over 25 years, including private investment, turnkey, and technical proposal projects. With technical expertise developed through Value Engineering (VE) and extensive design experience, the division has established a competitive position in the railway construction sector.

The Railway Division has strengthened its technical capabilities through participation in national R&D projects focused on increasing operating speeds on high-speed railways, Personal Rapid Transit (PRT), and tilting train technology. It has also contributed to the expansion of national and regional railway networks through railway network planning, preliminary feasibility studies, and pre-feasibility studies.

The Railway Division provides comprehensive engineering services, from feasibility studies to basic and detailed design, for domestic and international projects covering high-speed rail, conventional rail, metropolitan rail, urban rail, and light rail transit. Recent major projects include the Goyang–Eunpyeong Metropolitan Railway, the Okjeong–Pocheon Metropolitan Railway, the Gangneung–Jejin Single-Track Electrified Railway Construction Project, the Pyeongtaek–Osong Quadruple-Track Railway Construction Project, and the Second Urban Railway Network Plan for Busan Metropolitan City.

In the urban railway sector, the division has participated in projects involving Seoul Subway Lines 7 and 9, Incheon Subway Lines 1 and 2, Gwangju Metro Line 2, and the Gimpo Urban Railway. Its metropolitan railway projects include GTX-A, the Goyang–Eunpyeong Metropolitan Railway, the Okjeong–Pocheon Metropolitan Railway, the Hanam Line, and the Jinjeop Line. The division also continues to expand its business scope through participation in mainline railway projects, including the Jungang, Gyeongchun, and Janghang Lines, as well as railway projects in Paraguay, Mongolia, and Egypt.

◆ Project Achievements

· 2019 : Feasibility study for Railway modernization project of Egypt Luxor~High Dam
Pre-feasibility study for Extension of Line 6 and Transfer of Sinnae Train Depot
Preliminary and detailed design for Cheongna International City Extension of Seoul metropolitan railway Line 7(section 3)
Feasibility study and Preliminary plan for Incoming railway of Seongmun National Industrial Complex
· 2018 : Detailed design service for the private investment project of East North LRT(Wang Sib Ri~Sanggye)
Preliminary design service for the private investment project of Great Train Express Line A
· 2017 : Pre-feasibility and feasibility study on LRT Line in Western Sri Lanka
Detailed design for Gwangju Metro Line 2 Phase 1
Pre-feasibility study for Railway Line capacity expansion
Detailed design for Jungbu-Naeryuk line Icheon~Munkyeong railway roadbed construction lot 9
· 2016 : Detailed Design Service for Shinlim LRT Private Investment Project
Myanmar Mandalay ~ Myitkyina Railway Rehabilitation and Modernization Feasibility Study
· 2015 : Feasibility study and preliminary design services for Great Train Express
Preliminary and detailed design services for sector 5 of the dual-track subway of Hanam line (Sangil~Geomdansan)
Pre-feasibility study of Paraguay Encarnacion LRT(light rail transit)
Preliminary and detailed design services(T/K) for sector 4 of the dual-track subway of Hanam line (Sangil~Geomdansan)
Basic design review, preliminary study & analysis and detailed design for Ukhaa Khudag~Gashuun Sukhait railway project
Feasibility study and preliminary design services for Cheonan~Cheongju airport
Preliminary and detailed design services for Dodam~Yeongcheon double track railway lot 3 & 5 of the central line
· 2014 : Detailed design services for east sea line(Wonnam~Jukbyeon, Yeonghae~Hupo) railway trackbed construction project
Preliminary design services for the Jinjeob line(Danggogae~Jinjeob) lot 3 double tack railway construction project(T/K)

· 2014 : Preliminary and detailed design services for the Busan subway(Sasang~Hadan line) lot 5 construction project(T/K)
Trackbed preliminary design for the Poseong~Pyeongtaek railway lot 2 construction project
Feasibility study for Paraguay Encarnacion~ Artigas railway construction project
· 2013 : Preliminary and detailed design services for Gimpo subway lot 3 trackbed construction project
Dual-track railway design for the Bujeon~Masan BTL project
Feasibility study for Paraguay railroad construction project(railway across South America)
· 2012 : Preliminary and detailed design services for Ulsan new port lead-In railroad trackbed
Preliminary and detailed design services for Hongseong~Songsan double track railway construction (lot 10) of west sea line
· 2011 : Preliminary and detailed designs for railway relocation of submerged districts around the Yeongju dam
Tender design for Delhi MRT’s project of phase-Ⅲ
Trackbed detailed design for inlet rail to Gunjang national industrial complex section 1
· 2010 : Trackbed alternative designs for sections 1 and 2 of the Honam High Speed Railway (HSR) 1-2
Preliminary and detailed design for Seoul Metro Line 9(section 919) – T/K
· 2009 : Preliminary and detailed design for Incheon subway line 2(section 213)-T/K
· 2008 : Trackbed preliminary design for the Honam HSR section 6
· 2007 : Detailed design for Daegu urban railway section 3-3
Double-tracking project of the Jeolla railway line(BTL)
· 2006 : Detailed design services for Bujo~Pohang railway construction of east sea line
· 2005 : Basic design for the sector 6 of the Seongnam~Yeoju dual-track subway
· 2004 : Detailed design service for the private investment project of Yongin light rail transit (LRT)

◆ Key Projects

Basic and Detailed Design for Section 3 of the Seoul Subway Line 9 Phase 4 Extension Project

The Seoul Subway Line 9 Phase 4 Extension Project aims to alleviate public transportation difficulties in the Godeok and Gangil areas of Gangdong-gu, Seoul, improve transportation convenience for local residents, and promote balanced regional development. By expanding the railway network in connection with the existing Line 9 and enabling efficient train operations, the project seeks to improve public transportation accessibility and provide comfortable and safe urban rail services.

- Project Name : Basic and Detailed Design for Section 3 of the Seoul Subway Line 9 Phase 4 Extension Project

- Location : Godeok IPARK – Godeok–Gangil District 1, Gangdong-gu, Seoul

- Total Length : 1,486.253 m

[1 Station (Station 942), Mainline Tunnels : 1,309.253 m, Station Section : 165 m, Ventilation Shaft Section : 12 m]

- Project Period : May 2021 – June 2022

- Client : Seoul Metropolitan Government