Which of the following bridge type is most suitable for long span1 pointSlab bridgeSuspension bridgeCable stayed bridgeGirder bridge

The most suitable type of bridge for long spans is the Suspension bridge.

Here's why:

1. Suspension bridges are designed to be lightweight yet strong, allowing them to cover long distances. They are held up by cables, towers, and anchors.

2. The main advantage of suspension bridges is their capability to cover long distances. They can span from 2,000 to 7,000 feet, which is farther than any other type of bridge can accommodate.

3. The design of a suspension bridge is such that the weight of the bridge is distributed evenly across the cables, towers, and anchors, which allows it to hold a significant amount of weight.

4. Suspension bridges are also more flexible than other types of bridges. They can sway and move with the wind without breaking, which makes them ideal for areas with high wind speeds or in places prone to earthquakes.

Therefore, for long spans, a suspension bridge would be the most suitable choice.