The network operated by Belgrano Cargas extended through the provinces of Buenos Aires, Santa Fe, Córdoba, Mendoza, Santiago del Estero, San Juan, La Rioja, Catamarca, Tucumán, Chaco, Formosa, Salta and Jujuy.

The line also reached all the Argentina's neighbouring countries, such as Bolivia, Uruguay, Brazil, Chile and Paraguay.

[1] As part of a national railway privatisation plan carried out under the presidency of Carlos Menem from 1992, a 30-year concession to operate the network was granted to "Belgrano Cargas S.A.", formed by the union of railway workers, "Unión Ferroviaria" (51%), and Laguna Paiva (48%), an industrial cooperative, on 16 November 1999.

Soon after, "Shima", a Chinese company associated with local entrepreneur Franco Macri presented an investment plan consisting of AR$ 1,400 million.

This consortium finally withdrew when the Government imposed as a condition that private holdings Emepa Group and Grupo Roggio (owners of railway operators Ferrovías and Metrovías respectively) should be part of the operator holding along with Unión Ferroviaria and other transport unions of Argentina.