What kind of 4 bridges are there?

1. Fixed Bridges: These bridges are permanently in place and do not move. They can be made of various materials such as concrete, steel, or wood. Fixed bridges are the most common type of bridge.

2. Movable Bridges: These bridges can move to allow boats or other watercraft to pass underneath. There are several types of movable bridges, including:

* Bascule Bridges: These bridges pivot around a horizontal axis to open.

* Drawbridges: These bridges move horizontally to open.

* Lift Bridges: These bridges lift vertically to open.

3. Suspension Bridges: These bridges are supported by cables that are suspended between two or more towers. Suspension bridges are often used for long spans, such as crossing a river or canyon.

4. Arch Bridges: These bridges are made of a series of arches that support the deck of the bridge. Arch bridges are often made of stone or concrete and are known for their strength and durability.