In Minneapolis, a major freeway bridge suddenly collapses in the middle of rush hour.

A massive sinkhole swallows millions of dollars of legendary automobiles at the National Corvette Museum in Kentucky; expert geologists investigate and reveal how an enormous cave system could remain undetected and poised for catastrophic destruction.

A devastating rail disaster outside a small North Dakota town results in cargo erupting in massive explosions; experts use the latest science to investigate and uncover an engineering flaw poised for catastrophic failure.

A series of violent explosions rips through a major Texas oil refinery, causing a fatal disaster and devastation on a terrifying scale; experts use the latest science to investigate and uncover what triggered a catastrophic malfunction.

Tragedy strikes a bustling Canadian shopping mall when a parking garage suddenly collapses resulting in a fatal disaster; expert engineers use the latest technology to investigate and uncover a deadly design flaw that could have been prevented.

Construction turns catastrophic in New Orleans when the side of a hotel complex collapses on a busy street below; expert engineers investigate to uncover the reason behind this sudden and fatal disaster.

A deadly tragedy on a freeway in Oklahoma sends one of the state's busiest bridges collapsing into the Arkansas river below; expert engineers investigate how a tugboat striking a reinforced concrete pier could cause such a catastrophic disaster.

When an indoor hotel walkway collapses in Kansas City, Mo., it becomes the most deadly engineering disaster in U.S. history; experts investigate and uncover evidence of a catastrophic design change in the support system construction.

A shipping catastrophe occurs when a massive container vessel runs aground and completely blocks one of the most vital trade routes on the planet; experts investigate and uncover critical wind conditions and potential navigational errors.

A routine detonation turns into a demolition disaster as a building refuses to collapse in Dallas; experts investigate and reveal the structure's concrete core was designed to withstand hurricane force winds.