1. Name the three basic bridge types and describe each with a complete sentence. Cable Stayed: A bridge that consists of one or more columns with cables supporting the bridge deck. Bow String: A bridge in which of the bottom part bends down and the upper part bends up. Steel Truss: A bridge composed of connected elements which may be stressed from tension and/or compression. 2. What were the very first types of bridges? What were they made from? The first type of bridge was made out of long thin slabs of stone and another type of old bridge was made out of vines and grass. 3. Describe a clapper bridge. A clapper bridge is a bridge which slabs of stone sit on piles of stone. 4. Who were the first group of people to construct arch bridges? Why were arches used? The Egyptians were the first people to construct arch bridges. The arch bridge is used to carry pedestrians, vehicles, light rail and heavy rail. 5. Early bridges in Asia were long-span bridges that crossed over wide rivers. What is the name of this bridge design? The name of the long-span bridges in Asia were called Bosporus Bridge or First Bosporus Bridge. 6. When did engineers begin using concrete in bridge building? Engineers started using concrete in bridge building in1822. 7. What types of bridges were built using the truss design? Arch bridges were built using the truss design. 8. When and where was the first cast-iron bridge built? The first cast-iron bridge was built at 1779 and located at England, Ironbridge. 9. How was the suspension bridge changed by the use of metal? Name one famous suspension bridge. The suspension bridge could be made longer and stronger. One famous suspension bridge is the Golden Gate Bridge. 10. From eleven different truss bridge designs in your hand out, which one appears the strongest and why? The strongest truss bridge design is the K Truss.