9

Examining Bridges Collapses.

Currency:USD Category:Books / Children's Books Start Price:20.00 USD Estimated At:NA
Examining Bridges Collapses.


There will be a 1-minute interval in between lots closing. 5 minutes will get added to the clock when a bid is received within 5 minutes of the lot ending.
When Bridges Collapse.
Did you know there are more than 600,000 bridges in the United States? If not properly taken care of, these structures can collapse from too much pressure or from a natural disaster. Thirteen people died and more than 100 people were injured after the I-35W Bridge in Minnesota collapsed in 2007. In this book, you'll examine bridge collapses and explore what they are, how they happen, and how to prevent them from happening in the future.