Types of bridges
Truss bridges are triangular structures that are very rigid.

 
Suspension bridges are often used to span large and deep sections of water. Metal cables suspended from rigid towers are used to support the roadway beneath.

Arch bridges are some of the oldest structures still standing. Arch bridges have a limited span.
The arch is placed under compressive forces and tends to push outwards. Large concrete structures are often found at the base of the arch pushing back against its outward motion.
Girder bridges are made of girders placed on top of piers built into the ground. The girders carry loads through bending action. The piers experience compressive forces.

Cable-stayed bridges are similar to suspension bridges but do not have a suspension cable. Cables are connected directly to the supporting towers.
Using the information given and some of your own research, identify the following bridges and indicate what forces are acting on each part of the bridge

The bridge is a

Indicate on the diagram the points on the bridge under compression and those under tension.

The bridge is a

Indicate on the diagram the points on the bridge under compression and those under tension.

The bridge is a

Indicate on the diagram the points on the bridge under compression and those under tension.

The bridge is a

Indicate on the diagram the points on the bridge under compression and those under tension.

Identify five other bridges in your local area. Drive along the freeway or just walk around the local park. You may photograph or draw the five bridges you see.