Bids for the project will be received until September 5, while the works are expected to begin in December.
The US$160mn project is the result of an unsolicited proposal developed and submitted by the contract winner, which was also the only bidder in the tender.
The project is expected to increase the volume of cargo transported fivefold to 4.4Mt in 2019 from 847,282t in 2015.
Two high-level executives at Grupo Financiero Interacciones, Mexico's top specialized financial group, spoke to BNamericas about the challenges and opportunities that the Mexican market provides for infrastructure lenders.
Between January and March, private investment reached US$508mn. Spending on road projects increased 42%.
JBS chairman Joesley Batista admitted to paying off public officials in Brazil but said the company's international expansion had not included such practices.
The projects outlines by the Neuquén government include development of a cargo terminal at the Neuquén city airport, irrigation works, a trans-Andean railway and a duty-free trade zone.