Bridge History, Types, and Research Post-Assessment/GY25-26

1. What are three basic types of bridges? Mark all that apply.

• beam bridge
• tree bridge
• rock bridge
• arch bridge
• suspension bridge

2. Where do you find the span of a bridge?

• top of the bridge
• sides of the bridge
• roadway of a bridge
• under a bridge

3. What is the strongest shape that can maintain its shape regardless of where the weight is placed on it?

• square
• circle
• rectangle
• triangle

4. What is the one weight that bridges are not built to withstand?

• their own weight
• the weight of the rocks in the water below them
• the weight of the load passing over
• enviromental loads such as earthquakes, wind, and water

5. What is a truss?

• drawbridge
• a rigid framework, usually a strong triangular structure
• a bridgelike structue of arched masonry
• a floating bridge supported by flat-bottomed boats

6. Which bridge type is the oldest bridge design?

• beam
• arch
• suspension
• cantilever

7. What is the definition of an abutment?

• a heavy column of steel or concrete sunk vertically into the water to support a bridge.
• a thick heavy rope, often of wire strands
• a foundation built on the shore to support a bridge.
• vertical or upright timber

8. Which one of the following statements are true?

• A single beam bridge can span a distance of up to 200 feet (60 meters).
• An arch bridge can safely span up to 1, 000 feet (300 meters).
• A suspension bridge is capable of spanning up to 7, 000 feet (2,100 meters).
• All the above are true.

9. What is a cable?

• a heavy column of steel or concrete sunk vertically into the water to support a bridge.
• a thick heavy rope, often of wire strands
• a foundation built on the shore to support a bridge.
• vertical or upright timber

10. What is one thing you know about bridges?