Abstract
•NDT techniques applicable to concrete bridges are reviewed.•Different damage levels, NDT methods along with remedial measures are proposed.•NDT methods are suggested to address specific problems related to structures.•Importance of structural health monitoring for concrete bridges is highlighted.
NDT methods applicable to concrete bridges are reviewed. The methodology, advantages and disadvantages along with up to date research on NDT methods are presented. Different damage levels, having less dependence on inspector judgment, are suggested. Moreover, a flow chart based on damage level along with NDT methods and potential remedial measures are proposed for periodic health monitoring of structures. NDT methods are also suggested to address specific problems related to structures. Finally, the relation between some of the well-known NDT methods and most common problems encountered by the field engineers is proposed. Hence, the importance of structural health monitoring is highlighted.