In the webinar extensive use will be made of LimitState:RING, a software application which builds on decades of research in the field and has been designed to rapidly give a reliable estimate of masonry arch bridge load carrying capacity. The software is currently used by major organizations such as Arup, AECOM, SNCF and Network Rail. Railcorp, after undertaking a comprehensive review of available assessment tools for masonry arch bridges, have also concluded that LimitState:RING is the most suitable tool for their needs.