A single massive cargo ship is grounded and blocking the Suez Canal causing a major impact to world trade. A Canberra highway overpass collapses during construction. A sinkhole in suburban Pennsylvania suddenly opens up swallowing a moving car on camera. A vital bridge on a key New Orleans evacuation route, is found to have a corrosion problem with its cables during an inspection following the collapse of another bridge.

What went wrong with a deadly rush hour bridge collapse in Minneapolis, a controlled building demolition in Dallas, a fatal rail collision on a mixed use bridge in Denmark and a dam failure in Iowa which threatened a small town.

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