ABSTRACT
Structural conditions along the life of masonry bridges show changes in geometry caused by load effects, settlements, environmental actions and material deterioration, with accumulation of damage in time. Particular attention should be paid to transverse load effects on spandrel walls, together with the consequences of water ingress in the structure. The paper first analyses the approaches in the Italian CNR DT213 and the British CIRIA C800 to consider damage accumulation in the assessment. The effects of water ingress are then shown through a review of case studies. Example of limit analysis accounting for damage due to cracking and water seepage is proposed. The conclusions address the needed research developments
