Over the past two decades,there has been a focus on the development of effective techniques for the monitoring of the condition of bridge structures.Vibrationbased bridge health monitoring techniques usually involve direct instrumentation of the bridge and can be effective in highlighting deterioration.They are arguably becoming a more critical part of bridge management systems and maintenance strategies,although they can be costly and labour intensive.More recently,there has been a move towards the development of indirect vibration-based approaches utilising the response of a vehicle passing over a bridge (McGetrick & Kim 2013).This paper investigates such an approach; an alternative low-cost wavelet-based approach for the monitoring of bridge structures consisting of the use of a vehicle fitted with accelerometers on its axles.The approach aims to detect damage in a bridge while reducing the need for direct instrumentation of the bridge.