How have bridges improved overtime?

Answer 1

Bridges have gone from simple wooden structures to strong iron and steel structures because of the advance in materials and technology. There are also more people working on building these bridges, so more complex structures can be built in a shorter time.

Answer 2

In the past, bridges were either based on just a log crossing some water, or later by building arches out of stone or bricks. More modern bridges use trestles, which are a way of making a relatively strong platform out of a small amount of material. The most modern bridges use cables to hold up the roadway; these are called suspension bridges.

Answer 3

cause noob