Category of materials to be used for making a strong bridge ? ?

Some common materials used for making a strong bridge include:

1. Steel: Steel is a popular choice for bridge construction due to its high strength-to-weight ratio and durability. It is often used in the form of beams, trusses, and cables.

2. Concrete: Concrete is another common material used in bridge construction, particularly for the bridge deck and support structures. It is strong, durable, and resistant to weathering and corrosion.

3. Wood: Wood is often used for smaller bridges or pedestrian bridges. It is a renewable and cost-effective material, but may not be as strong or durable as steel or concrete.

4. Composite materials: Composite materials, such as fiber-reinforced polymers (FRP), are becoming increasingly popular for bridge construction. These materials offer high strength and durability, as well as resistance to corrosion and fatigue.

5. Prestressed concrete: Prestressed concrete is a type of concrete that has been pre-compressed to increase its strength and durability. It is commonly used in bridge construction for beams and girders.

6. Aluminum: Aluminum is a lightweight and corrosion-resistant material that is sometimes used in bridge construction, particularly for pedestrian bridges or in areas where weight is a concern.

7. Stone: Stone bridges have been used for centuries and can still be found in some historic bridges. While stone is durable and aesthetically pleasing, it may not be as strong or cost-effective as other materials.

Composite materials