Here are some examples of bridges with an emphasis on older, more primitive stone arch bridges. Particularly interesting is the Bamboo bridge from Indonesia.
Ancient Stone Arch Bridge, Greece
Primitive Suspension Bridge
Collapsed Section Repaired with Temporary Bridge
Bamboo Bridge, Indonesia
Ancient Stone Bridge,Yemen
Ancient Arch Bridge, Iran
Suspension Bridge, Japan
Raised Bridges, Chicago
Cable Stay Bridge, France
Foot Bridge, France