Abstract
In Japan, because there are a huge amount of existing short and medium span bridges in service, it is becoming one of major social concern how those bridges can be maintained in good condition during their whole lifetime. In this paper, a method of the condition assessment is proposed newly for existing short span (10m-20m span length) RC bridges based on monitoring data from public bus vibration. This paper describes the details of not only a prototype monitoring system using information technology and sensors which is capable of providing more accurate knowledge of bridge performance than traditional ways but also a few specific examples of bridge condition assessment by public bus vibration measured in operating on the bridge based on the data from the system.
