Access to this video is a benefit for members through
Up Next
Back to Show
Watch Preview
NOVA
Why Bridges Collapse
Season 46
Episode 18
In 2018, Italy’s Morandi Bridge collapsed, tragically killing 43 people. For 50 years, the iconic bridge had withstood the elements—and stress from ever-increasing traffic. What went wrong that fateful day? And how can new engineering technology protect bridge infrastructure to prevent such tragic failures in the future?
Support Provided By
Season
53:40
From electric flight to artificial noses, engineers are finding new ways to preserve our planet.
53:40
Humans are born to roam. See how engineers are inventing new ways to explore and extend our range.
Unlock with PBS Passport
53:40
Is engineering humanity’s superpower? See how we can amplify our natural abilities in amazing ways.
Unlock with PBS Passport
53:40
Dive into the universe at the tiniest – and weirdest – of scales.
Unlock with PBS Passport
53:34
Meet the surprising, oddball worlds moving around our solar system.
Unlock with PBS Passport
53:34
Visit strange, frozen worlds to discover the bizarre ice that forms beyond Earth.
Unlock with PBS Passport
53:34
Discover the powerful volcanic eruptions that have shaped worlds across our solar system.
Unlock with PBS Passport
53:34
What are the weirdest worlds in our solar system, and how did they come to be?
Unlock with PBS Passport
53:34
Discover the dramatic forces creating spectacular weather on neighboring planets and moons.
53:38
Explore big discoveries that have revolutionized our understanding of the universe.
53:40
Find out who’s using your data and what you can do about it.
53:34
Explore the spectacular cosmic phenomenon of a total solar eclipse.