These services had previously been run by the state-owned company Ferrocarriles Argentinos since railway nationalization in 1948.

As part of railway privatisation carried out during the presidency of Carlos Menem, a concession to operate the services was granted to the government of Chaco Province in 1992, being later transferred to "Servicios Ferroviarios del Chaco" (also known for its acronym "SEFECHA") which started operations in 1997.

[1] The Government of Chaco carried out a plan to rehabilitate some branches within the Province, the first being the Cacuí-La Sabana line, which was re-opened in December 1997 running railcars by German company MAN.

In March 1998, another service was added, the Sáenz Peña-Taco Pozo line, with 3 trains a week.

The Cacuí-Resistencia-Barranqueras line (which service was named Metropolitano) was re-established in August 1999, using re-modeled Ferrostaal railcars.