4. Cornices

Cornices are elements fitted to the side edges of a bridge, whose main role is to enhance the aesthetics of the structure:

• by playing with effects of shape, proportion and color;

• keeping water away from vertical facings;

• and compensating for structural irregularities.

In recent years, the role of the cornice has shifted sharply towards that of a decorative element, while all other functions (e.g. dripstones, guardrail fastenings, etc.) have been taken over by other constructive arrangements (figure 12 ).