When a bridge or any structure starts to collapse with no clear reason why you have to wonder if the ground it was built on is unstable or whether the original construction company did a less than perfect job?
In the case of the bridge you see above it is a clear case of dangerous construction in a bid to save money. The construction company, whoever they are, took the brilliant decision of cutting costs by using less concrete. Instead the cavities where concrete was required were stuffed with bags of rubbish and styrofoam.
The bridge is located in Shanghai on the Suzhou River Road. Problems were first spotted just after Christmas when cracks appeared in the structure followed by a partial collapse. Further investigation found garbage bags, styrofoam, and general wood and plastic waste stuffed inside load-bearing sections of the bridge.
Lets hope they find a good demolition company to knock it down and start again.
Source: dpnplus blog (Japanese translated)
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