The Basento Viaduct is a bridge built in 1969 in Potenza (Italy) whose structure is assured by a continuous surface that minimize its area while maximizing its structural function.
Its engineer, Sergio Musmeci thus managed to create a magnificent concrete surface whose aesthetics directly derived from its optimization. The beauty of this bridge also emerges from the experience for people to walk on this surface as a second functional layer.

found on La Periferia Domestica (see also on core-form-ula)