My Take (Arnulf Christa): After 2.5 years of stagnation, South Korea's largest rapid transit project is moving forward again – this is a signal for the entire region. Such cost debates are normal, but the lack of flexibility in price adjustment clauses leads to long delays that end up being more expensive. For German construction companies, this shows: in Asia, rigid contracts are a risk, and anyone who wants to work there long-term must reckon with renegotiations.
The South Korean Ministry of Land, Infrastructure and Transport announced on 14 September that the GTX-C express railway line—delayed for nearly two years and eight months due to material and labour cost escalations—commenced construction on 15 September 2026. The 86.6 kilometre route connects Deokjeong in Yangju through central Seoul via Cheongnyangni, Samseong and Yangjae to Suwon Station and Sangnoksu in Gyeonggi Province.
The dispute was resolved through arbitration by the Korea Commercial Arbitration Board in April 2026, which approved an increase in total project costs to 4.9272 trillion won (approximately 3.2 billion euros). Hyundai Engineering & Construction leads the consortium, with Hyundai Rotem providing rolling stock valued at approximately 389 million USD (355 million euros).
The project structure represents a BTO model (Build-Transfer-Operate) combining private investment with public infrastructure objectives. With a planned construction duration of 60 months, the GTX-C line is expected to enter operation in the second half of 2031. The project serves as a benchmark for German infrastructure firms evaluating PPP-financed metro systems and illustrates cost escalation risks in long-duration transit contracts.
Source: Construction Review Online