The Seongsan Bridge (성산대교) carries National Route 1 over the Han River between the Mapo District and Yeongdeungpo District in Seoul, South Korea.
Construction on the spandrel braced cantilever arch began in April 1977 and opened to traffic on June 30, 1980. 1
- State: South Korea
- Route: National Route 1
- Type: Open Spandrel Arch
- Status: Active - Automobile
- Total Length: 1,410 meters
- Navigational Clearance:
- “Seongsan Bridge.” Naver Knowledge Encyclopedia. N.p.: NHN, n.d. Web. 15 Nov. 2012. Article.