Secondary Member Type

AWM Table:  Bridges
Attribute:  Secondary Member Type
Purpose:  To describe the type of structural elements that support or connect the main parts of a bridge or crossing, helping with structural assessment, repair planning, and material classification.


ValueDescriptionPhoto Example
BeamA beam is a structural element that primarily resists loads applied laterally across the beam's axis.
GirderA large beam or compound structure used for building bridges. It is the main horizontal support of a structure which supports smaller beams.
LogA large piece of wood, or log, that is used to create a structure.
TrussA structure of connected elements, usually forming triangular units. These members are structured and connected in a way such that they only incur axial force. The members of a truss are considered two-force members because the forces are only applied at either end of the member, resulting in either a compression or tension force. 
OtherA secondary structural element that does not fit into the listed types.