The Dangsan Railway Bridge (Korean: 당산철교) is a railway bridge that crosses the Han River in Seoul. It is used exclusively by Seoul Subway Line 2. Immediately on the south side of the bridge is Dangsan Station in Yeongdeungpo District, which is on an elevated platform. Hapjeong Station, a subterranean station in Mapo District, is located approximately 600 meters north of where the bridge makes landfall.