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bridges

Bridge Design (& Destruction!): Part 1
Image: iStockphoto.com/matthewleesdixon

Bridge Design (& Destruction!): Part 1

Why aren't all bridges just flat spans, held up by a post at each end? As it happens, one of the best ways to learn why some bridges stay up is to watch others fall down...violently.

You can watch several bridge collapses right here. Don’t worry, though. No innocent Lego people were harmed in the making of these videos.

MIT
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Bridge to Classroom: Engineering for Earthquakes

Bridge to Classroom: Engineering for Earthquakes

Can you design a bridge able to survive an earthquake 10 times stronger than the one that broke California's Bay Bridge? This site gives you what you'll need (including great info about quakes). More...

Interactive
Eduweb
Cargo Bridge

Cargo Bridge

In this game, workers need to get cargo across a valley so they need you to build a bridge. You've got a limited budget, though, so plan ahead! More...

Game
Cool Math Games
Bridge Builder Game

Bridge Builder Game

You'd better spend your money wisely and build a great bridge out of the right materials, or little creatures WHO TRUSTED YOU will suffer a horrible fall. More...

Game
FreeWorldGroup.com
Building Bridges from Plastic Shampoo Bottles

Building Bridges from Plastic Shampoo Bottles

Your old shampoo or water bottle could support a train or a tank. Jim Kerstein, CTO/Founder of Axion International, explains how his company builds bridges with plastic waste. More...

Article
NPR
Bridge Design (& Destruction!): Part 2

Bridge Design (& Destruction!): Part 2

Now take a look at the more complex truss and suspension bridges, and see how bridge design and engineering has changed with the growth of available materials. More...

Video
MIT
The Effect of Bridge Design on Weight Bearing Capacity

The Effect of Bridge Design on Weight Bearing Capacity

Here's how to build a model bridge and test what it can hold. If you love doing this, click "Learn More" to find out about bridge-related careers. More...

Activity
Science Buddies
10 Young Geniuses Shaking Up Science Today

10 Young Geniuses Shaking Up Science Today

Jerome Lynch, an engineering professor, has created a wireless sensor "skin" to monitor bridges, with the goal of preventing deadly collapses that no human inspector could see coming. More...

Profile
Popular Science
Bridge Basics: A Spotter’s Guide to Bridge Design

Bridge Basics: A Spotter’s Guide to Bridge Design

Today's bridges come in a huge range of shapes, and bridge-watchers who want to know what they're looking at, will want this guide. More...

Article
PGH Bridges
Bridge Forces: Resonance

Bridge Forces: Resonance

Aware of the potential dangers of resonance, soldiers often "break step" when marching across a bridge. Explore how resonant vibration destroyed the Tacoma Narrows Bridge and how engineers now add dampeners. More...

Article
HowStuffWorks
Bridges and Tunnels

Bridges and Tunnels

What sort of bridge or tunnel do you build to cross a particular terrain or water body? You'll find a number to choose from here. More...

Article
ExplainThatStuff!
Build a Bridge

Build a Bridge

Build the models and examine the photos on this site, and you'll know exactly the kind of bridge to put across a particular waterway. More...

Interactive
NOVA/PBS
Interesting Bridge Facts: Suspension and Arch Bridges

Interesting Bridge Facts: Suspension and Arch Bridges

With millions of bridges across the globe, there are bound to be some pretty amazing ones. Here are 10 facts, including one about a 1400 year old Chinese stone bridge. More...

Article
Science Kids
Scientist Profile: Earthquake Scientist

Scientist Profile: Earthquake Scientist

In 1978, when he was a college student, a large earthquake struck Colombia. That's when Jose Restrepo decided to study earthquakes and to engineer structures more resistant to an earthquake's shock. More...

Profile
DragonflyTV/PBS
She Builds Bridges of the Future

She Builds Bridges of the Future

Meet Linda Figg, whose engineering group has built bridges across the U.S. Their work includes the new St. Anthony Falls Bridge that replaced the collapsed I-35W bridge in Minneapolis. More...

Article
Science Buzz/NSF
Smart Bridges

Smart Bridges

Could more bridges collapse like the one in Minneapolis that killed 13 people? Yes, but advanced sensors may soon be watching over our spans. More...

Video
NOVA/PBS
Types of Engineering

Types of Engineering

Explore the variety of engineering careers — aerospace, agricultural, biomedical, chemical, civil, computer hardware or software, electrical, environmental, geological, nuclear, and petroleum. More...

Article
Exxon Mobile
Why the Bridges Failed

Why the Bridges Failed

This slideshow of famous bridge failures also shows how, thanks to advanced engineering, other spans might avoid the same fate. More...

Interactive
NOVA/PBS

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