Impresa Pizzarotti and Traversud plants produce all types of sleepers most commonly used on Italian railway lines, including special ones with under sleeper pads (USP) and switch sleepers.

All products are of the prestressed reinforced concrete (CAP) type, with prestressing ensured through the so-called “thosti type system”, considered the most reliable for maintaining prestress over time in fatigue-stressed artifacts. The companies have provided, since the mid 1990s, about 10 million sleepers that, placed on lines Italian railways with different load levels, have not been subject to any dispute. All artifacts are approved in accordance with special technical specifications issued by RFI SPA.