Eads Bridge

High school (ages 12+)
Transportation

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/eads-bridge

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How deep is Eads Bridge?Exceeding 100 feet below water level
2. How long is Eads Bridge?520 feet
3. What is the year of completion?1874
4. What is the designer and builder?James Buchanan Eads
5. Why was the Eads Bridge built?It was built to help people and goods travel across the wide, fast Mississippi River as the country grew and needed stronger bridges.
6. How did engineers build the bridge foundations?They used special air‑filled boxes called pneumatic caissons that let workers dig the riverbed dry and more than 100 feet below the water.

Mississippi River: A major river in North America, forming a significant geographical and transportation boundary in the United States.
Pneumatic Caisson: A watertight, pressurized chamber used for underwater construction, enabling excavation and building below the water table.
Cantilever Principle: A structural engineering concept where a beam or structure extends horizontally, supported at only one end, allowing for the construction of long spans.
Steel: An alloy of iron and carbon, known for its high tensile strength and durability, which became a dominant material in industrial construction.