One type of bridge is a Truss Bridge. A Truss Bridge is a bridge mostly made up of triangles. The Truss Bridge is economical, strong, and light. Since it´s made of triangles it is structurally sound and cost effective. The Truss Bridge is also overly large and can be a waste of materials, while on the other hand it can also save on material because it uses triangles as its support.

Suspension Bridges use cables to support the roadway over an expanse of water or rock. Suspension Bridges are incredibly cheap to make, are versatile, and are easy to maintain. Suspension Bridges are incredibly flexible, while they do need to move, to much movement can shake the bridge apart. Suspension Bridges also can only take certain types of traffic because