Minneapolis Bridge Collapse

The next bridge

It's unlikely the next bridge will resemble the I-35W bridge that failed. Bridge design experts talk about what the new bridges are made of and how they're constructed.

Guests

• Henry Petroski: Professor of engineering at Duke University. He's the author of "Pushing the Limits, New Adventures in Engineering."
• Atorod Azizinamini: Professor of civil engineering at the University of Nebraska-Lincoln.

Resources

• Accelerated Bridge Construction Technologies
• Henry Petroski's Web site