The original Seongsu bridge had a big accident on October 21, 1994. Part of the bridge broke, between the 10th and 11th (?), and 48 meters of it collapsed. 32 people died and 17 were injured. The bridge was built by Dong-Ah Industrial Construction Co., Ltd., which went bankrupt in May 2001.
www.dongah.co.kr/This is the newly rebuilt bridge, which was under construction from 1998 to 2004.