The US$19mn irrigation project will benefit farmers in the northern Jujuy province.
The state government will spend around US$3mn on an expropriation that will allow it to widen the Raposo Tavares (SP-270) highway.
The project stopped when its previous concessionaires fell under scrutiny from the Lava Jato probe. Now it is possible that a consortium of Chinese and Japanese firms may take onthe US$3.07bn project.
The consortium which had been in charge of operations, ABV, returned their concession earlier this year.
A local lawmaker leaves open the possibility of carrying out as a PPP, after the project fizzled out last year amid doubts about passenger demand and a lack of political commitment.
An appeals court stated that the Antofagasta health service must pay around US$6mn to consortium Comsa-Pilasi for "unilaterally" terminating its contract to build the US$200mn project.
Rio Grande do Sul state government will keep a controlling stake in the bank, but will sell an undisclosed number of shares.