Pins matching company:"Korea National Railway"

Samseong is the in-fill station between Seoul Station and Suseo on the GTX-A express line, sitting inside the Yeongdongdaero transfer complex in Gangnam. In May 2026 inspectors found 50 of the 80 support columns on the fifth basement level had one layer of reinforcement where the design called for two, and Hyundai Engineering and Construction is covering the roughly 3 billion won repair.

The 82 km GTX-B runs from Incheon National University Station in Songdo through Yeouido, Yongsan, Seoul Station and Cheongnyangni to Maseok in Namyangju, serving 14 stations and cutting the Songdo to central Seoul trip to about 30 minutes. Construction began on 7 March 2024.