Administration
In 1990 concessions were leased with toll collection on the busiest national roads, dividing the country in zones called "Corredores Viales".
The section between the junction with National Route 9 in Zárate and the junction with National Route 14 in Ceibas is part of Corridor Vial 18, under the management of Caminos del Río Uruguay (CRUSA) with a toll booth in Zárate (km marker 85).
In 1996 the concession was extended to 28 years with the condicion that the bidding company built a highway between the Complejo Unión Nacional and Gualeguaychú. The section between the General Justo José de Urquiza bridge and Ceibas was completed on October 12, 1999. Due to the currency devaluation of 2002, road work in the Ceibas - Gualeguaychú section was delayed.
The Virgen de Itatí Concesionaria de Obras Viales (VICOV) company took control of Corridor Vial 13, including, among others, Route 12 between km markers 871 and 1641, in the provinces of Corrientes and Misiones, from the junction with National Route 123 to the access to the Tancredo Neves International Bridge, excluding the section near the provincial capital city of Posadas (km 1336-1349) installing toll booths in Riachuelo (km 1014), Ituzaingó (km 1262), Santa Ana (km 1374) and Colonia Victoria (km 1551).
In 2003 the Corredores Viales concession contracts expired, and the numbering system was changed when calling for a new bidding process.
Corridor Vial 6 is now controlled by Empresa Concesionaria Vial (Emcovial) and includes Route 12 in the same section as the previous concession.
Read more about this topic: National Route 12 (Argentina)