| Bridge Name: | Seohae Bridge |
| Official Name: | Seohae Grand Bridge |
| Carries: | 6 lanes motorway |
| Locale: | Gyeonggi and Chungcheongnam, South Korea |
| Designer: | SAMWOO |
| Design: | cable-stayed bridge |
| Begin: | 1993 |
| Complete: | 2000 |
| Open: | November 9, 2000 |
| Coordinates: | 36.9444°N 126.8233°W |
The Seohae Bridge (ko|서해대교) is a cable-stayed bridge that connects Pyongtaek and Dangjin, South Korea. Bridge construction started in 1993 and was completed in 2000 at a cost of 677.7 billion won.[1] A prop (and some precast segments) fell on August 5, 1999 under construction due to Typhoon Olga.[2] The bridge opened on November 9, 2000.