Due to a collapse at the Seosomun overpass demolition site in Seodaemun District, Seoul, Korea Railroad Corporation (KORAIL) on the 27th halted train operations from the first service or adjusted service sections.
According to KORAIL, a total of 138 trains suspended operations that day. High-speed trains such as KTX and KTX-Sancheon accounted for 87, and conventional trains such as Mugunghwa and ITX-Maum accounted for 51.
By line, 57 trains on the Gyeongbu Line (Seoul–Busan), 24 on the Jeolla Line (Yongsan–Yeosu Expo), 23 on the Honam Line (Yongsan–Mokpo), and 12 on the Donghae Line (Seoul–Pohang) are not operating.
Trains with adjusted service sections total 162. Gyeongbu Line KTX trains are not operating between Seoul and Haengsin, and Gyeongbu Line ITX-Saemaeul trains are operating only between Suwon and Busan. Jeolla Line KTX also suspended service between Seoul and Haengsin, and Jeolla Line ITX-Maum runs only between Suwon and Yeosu. On the Gangneung Line and Jungang Line, KTX-Eum trains start and end at Cheongnyangni Station instead of going to Seoul Station.
The disruption stems from an accident around 2:31 p.m. the previous day, when a deck structure collapsed at the Seosomun overpass demolition site. The accident struck the catenary between Seoul Station and Sinchon Station, causing a power outage, and debris blocked the tracks. As a result, service became difficult at stations north of the accident point centered on Seoul Station.
As train operations were suspended or sections were abruptly adjusted, reactions of confusion spread on social media (SNS). An internet user said, "I'm trying to go up to Seoul by train today, but I have to get off in Suwon and transfer to a bus, so my arrival time will be much later than expected."
Subway Line No. 1 and the Gyeongui-Jungang Line (Munsan–Yongsan–Yongmun) are operating normally. The Gyeongui Line operates only between Munsan Station and Susaek Station and does not run between Seoul Station and Susaek Station.
With restoration work underway at the accident site, the timing for a full return to normal operations has not yet been set. KORAIL said it plans to inspect the catenary, tracks, and signal facilities as soon as restoration is completed and then decide whether to resume normal operations.
KORAIL asked passengers to check via the "KORAIL Talk" application before traveling, as departure and arrival stations may change until the situation is resolved.
For trains that are canceled or delayed by 20 minutes or more, ticket refunds do not incur a penalty. If the train used is delayed by 20 minutes or more, passengers can receive delay compensation according to the delay time.