A stadium on the brink of collapse, an upside-down bridge, and a massive subway project in crisis are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

An airport that's sinking into the sea, a strange tower that goes wrong, and a dangerous bridge in Venice are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

A city with hundreds of leaning buildings, the world's scariest airport and the world's biggest sewage pipe harbor engineering disasters in need of repair; experts use cutting-edge technology to reveal if they can be fixed.

A skyscraper so dangerous that it can melt cars, a bridge fiasco, and a stadium roof on the brink of disaster are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

A giant sinkhole, a multi-million dollar road to nowhere, and a wind turbine on the brink of disaster are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

A giant tunnel boring machine stuck underground, a village sinking into a mountain, and massive holes that could derail a train are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

Experts investigate an iconic Bay Area bridge devastated by an earthquake.

Residents along the Pacific Coast Highway are cut off from the outside world after a storm causes a bridge to buckle. Experts reveal how the construction method of the old concrete bridge left it vulnerable to erosion on the steep coastline

An iconic telescope in Puerto Rico suffers a spectacular collapse.

A crane collapse leaves seven dead on a holiday weekend in Manhattan.

A morning commute becomes dangerous when a bridge collapses in Pittsburgh.

An aging dam in Nebraska fails after the area is pummeled by a superstorm.

A distinguished library is ravaged by not one but two disastrous fires.

Twenty people are killed after a hotel explodes in America's heartland.

A sinkhole envelops a residential street in the Bronx.

Tragedy strikes in San Juan when an explosion rocks a busy shopping center.

An explosion at a chemical plant in New Jersey kills five workers.

When demolitions don't go as planned, engineers race for cutting-edge solutions to bring down buildings that refuse to fall. At the world-renowned Pontiac Silverdome in Michigan, experts try to succeed when the world's most powerful explosives fail.

When a dam breaks during routine maintenance, engineers fear a catastrophic flood; experts use the latest science to investigate what went wrong and how a simple miscalculation could be to blame.

Experts uncover what triggered a fatal malfunction at a Texas oil refinery.

A railroad inferno takes down a historic river crossing in Arizona.

When a brand-new bridge suddenly collapses in Miami, several die in a horrifying calamity; experts use the latest science to investigate what went wrong and how an innovative bridge-building technique could be to blame.

When an oil rig in Louisiana drills into something unexpected, a cataclysmic event is unleashed, causing a lake to suddenly disappear; experts use the latest science to investigate what went wrong and how it can be fixed.

As one of the largest construction cranes in the world lifts a one-million-ton section of roof for Milwaukee's Miller Park stadium, it suddenly collapses; experts use the latest science to investigate what went wrong.

Montreal's Olympic Stadium was an ambitious engineering project with a striking Space Age design, but it's distinctive roof has caused over one billion dollars in cost overruns; experts reveal what went wrong and how cutting-edge science can fix it.