Monitoring of Singapore-Malaysia second link during construction

The Singapore-Malaysia Second Link is a prestressed bod girder carrying a dual carriageway with three lanes on each carriage. The bridge serves as a relief to the existing crossing locate in northern Singapore. The bridge was compete in 1997 and opened to traffic in the same year. Owing to its importance a suite of instruments was installed in three segments of the bridge in order to monitor its short-term and long-term behavior and performance under construction loads, environmental loads, and vehicular loads. The paper present a description of the instrumentation, results of the monitoring during construction, and observations of the bridge response to loading during construction.