The Seongsu Bridge is a bridge over the Han
River in Seoul, South Korea. The bridge links the Seongdong and Gangnam districts.
The cantilever bridge was completed in 1979 and its total length is
1160 m. It became infamous when it collapsed on October 21, 1994.
The bridge collapsed early in the morning when one of its
concrete slabs fell due to a failure of the suspension structure. This structural
failure was caused by improper welding of the steel trusses of
the suspension structure beneath the concrete slab roadway.
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32 people died and 17 were injured in the accident.
Afterwards, the bridge was supposed to be repaired, but because of a weakness
in the structure, it had to be completely redesigned and rebuilt. The new
design was finished on 15 August 1997, and is similar to the original design.
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