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

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.