ABSTRACT
The Pietrastretta viaduct is composed by two separated series of simply supported beams for a total of 21 × 2 spans with average length of about 44 m. Each span is composed by three longitudinal beams equally spaced of about 3.2 m, transversally connected and stiffed by 6 concrete beams, equally spaced of about 8.75 m. Longitudinal beams are of variable cross section with an axis of symmetry in the midspan, which is also the deeper point of the beam. Longitudinal beams are post tensioned by means of six cables with parabolic path. The deck is 9.5 m wide.
