Subject to government approval, the transaction will cover the 1676mm-gauge 5690km Central network connecting Buenos Aires with Mendoza and San Juan provinces and the plus 2704km Mesopotámico standard-gauge network which links the capital with the north eastern provinces of Entre Ríos, Corrientes and Misiones, with connections to Paraguay and Uruguay. ALL has operated both networks since 1999 under a 25-year concession.