The continuous acoustic monitoring system SoundPrint was installed at the Ponte Moesa as part of the research project AGB2002/009. During the monitoring (May 2004 to February 2006) 14 spontaneous and two artificial wire breaks were detected. As a result of the monitoring and of two invasive inspections the owner decided to replace the bridge. The old one will be demolished in spring 2007. To evaluate the classification and localization of the wire breaks it is of substantial interest to open and examine parts of the bridge.

The examination will be part of the demolition and will be coordinated with the contractor. The part of the bridge, where most of the wire breaks occurred, will be cut off and examined separately on a yard not affecting the progress of the construction work. The sections will be 5 m long and 1 m wide.
A research assistant of the IBK will need one week to open the ducts and to document the wire breaks. TFB and requires one week to evaluate the corrosion. Since all examinations depend on the weather conditions a time frame of approximately three months is considered.