Bridges is a structure intended to carry the road traffic or other moving load to pass through the
obstacles. The bridge may be roadway bridge, railway bridge,a canal, pipelines, etc. the main
obstacles can be river, valley, and others.Bridges are very important in the modern roads and railway
transportation system, generally serving as social infrastructure system. During constructing bridge
there are three main components of the bridge, and they are (substructure, superstructure, bearing),
etc. this study is concern about the manual analysis and design of the bridge, it’s built for the purpose
of providing passage over the obstacles, generally something that can obstacle to cross otherwise.