Consequences of The Collapse
The accident left a collapse zone 150 m (490 ft) wide, 100 m (330 ft) long, and 30 m (100 ft) deep. Four workers were killed, with three more injured. Steel beams were twisted, with two construction cranes being swallowed up. A substantial chunk of the main highway running over the tunnel was also knocked out.
The rescue efforts were called off on 23 April 2004 because of the low chance of survival by that point, as well as danger to the rescue teams. There was also the increasing need to stabilize the ground around the accident site to reduce the risk of further collapses. All six lanes of the Nicoll Highway were heavily damaged, rendering the road unusable. The highway re-opened on 4 December 2004 after reconstruction efforts.
A committee of inquiry found main contractor Nishimatsu Construction Company and its officers as well as Land Transport Authority officers responsible for the collapse. Several other officers and subcontractors were reprimanded and issued warnings in connection with the accident. As a result of the accident, Stages 1 and 2 of the Circle line were delayed. Stage 3 of the line, Bartley to Marymount stations opened first on 28 May 2009. The partially built station structure was abandoned, and the affected station has been shifted about 100 metres (330 ft) away from the accident site. Eventually, Nicoll Highway MRT Station started operations on 17 April 2010.
Read more about this topic: Nicoll Highway Collapse
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