Bridge Statistics is a field of study that focuses on the analysis of data related to bridges. This includes information such as the number of bridges, their length, width, height, and other structural characteristics. It also includes data about the materials used in bridge construction, the cost of building and maintaining bridges, and the safety of bridges. Bridge Statistics can be used to inform decisions about bridge design, construction, and maintenance. The term SPANS is an acronym for Suspension, Prestressed Concrete, Arch, Network, and Steel, which are the five main types of bridges.