Seoul Metro opened on May 22, 2021 (Saturday) between Seongnam Station (761: 석남) and Bupyeong-gu Office Station (759: 부평구청) on the Seoul Subway Line 7.
The starting point was Bupyeong-gu Office Station connecting with Incheon Metro Line 1 until now, and it was extended to Seongnam Station, which connects to Incheon Metro Line 2, 4.2 km westward (See the below network map). A new Sangok Station (760: 산곡) opened on the way.
Seoul Subway Line 7 is a long commuting line from Incheon City to Uijeongbu City (Gyeonggi) via Bucheon City (Gyeonggi) and Seoul City, but it has been extended to 53 stations in total. In addition to being able to directly access the Gangnam area of Seoul from the Incheon Line 2, the Incheon Lines 1 and 2 that pass through the north and south are connected from east to west, and the transportation network in Incheon City will be enhanced.
The extension section is operated every 6 minutes during the morning and evening congestion hours, and every 12 minutes during the day. In order to maintain seating opportunities for Bupyeong-gu Office Station users, some trains bound for the downtown during the morning commute will continue to operate at the first train from Bupyeong-gu Office Station.
Both Sangok Station and Seongnam Station are located in a residential area on the outskirts of Incheon City. Near Seongnam Station, there is “Geobuk Market (거북시장)”, which has an old-fashioned atmosphere with popular shops and stalls, and is shown as a nickname on the station sign of Seongnam Station.