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Activity
 How well do you know your bridges?

Match the pictures with the descriptions below.

Bridges

  • It has a basic design and is the most affordable. Piers on either end support the horizontal beam. The weight rests on these piers. It is not very high, so ships are unable to pass under it.
  • It is attractive and modern looking. It spans between 150–850 meters. It is built quite quickly and is cost effective. The bridge is supported by cables, which are all attached to towers and to the road at regular intervals in various patterns.
  • It is the most expensive bridge to build, but it is the lightest and most attractive. The sides are anchored down and the cables help distribute the weight evenly. It spans between 600–2000 meters.
  • It is the oldest type of bridge. It has excellent natural strength because weight is distributed along the curve of the arches. It spans between 60–250 meters.

Label the parts of the bridge that helped you to decide which type it was.

Bridge Movie

Hill's Folly:
James J Hill and the Building of the Stone Arch Bridge

Photo Gallery of Pittsburgh Bridges
 

 

Vocabulary

  • Civil engineer is someone who plans, designs and supervises the construction of projects.

  • Construction manager is someone who coordinates the building process of a project from start to finish.

  • Span is the distance the bridge extends between 2 supports.

  • Structural engineer investigates the behavior and designs of all kinds of structures to make then safe.

  • Battleship Bridge Game (Choose Easy Level)

  • Bridge Vocabulary Worksheet

Questions for Thought:

1.What city has the most bridges in the world?

2.How many bridges are in that city?

3.What is the most common type of bridge in Pittsburgh?

CHOOSE ONE OF THE FOLLOWING QUESTIONS AND ANSWER:
A.) Suppose all the bridges in a large city (New York City, for example) were closed. What effect would that have on that city? What are some specific ways that people would adapt to not using bridges?

B.) Discuss how each of the three basic types of bridges—suspension, beam, and arch—transfers loads from the bridge to the ground. Describe where tension and compression occur on each type of bridge.

C.) Many bridges are icons for their city or region. Why do you think people associate certain bridges with certain cities, while other bridges seem unremarkable?
Bridge Links
Link to Online Bridge Game

The Bridge Challenge

Build a Bridge

Battleship Bridge Game

How Bridges Work

Toothpick Bridge


Pittsburgh Bridges