Companies that qualified in the previous phase have been sent a prospectus with information about the unit and bidding instructions, the Brazilian NOC says.
The Argentine government has given the green light to sign the loan agreement with Latin American development bank CAF to help consolidate a PPP program.
The first stage will entail building three new connection roads which are expected to be finished by February. Future works will include two new tunnels in the area.
The authorities received the administration of a total of 605km of highway, and now will begin the process to hire small companies for the maintenance of the road while a new concession is tendered.
According to treasury forecasts, winning bidders will pay some US$2.4bn for shares in the state-run power company's assets.
The resolution is expected to speed up the development of the new Santa Marta aqueduct, a US$1bn project that is scheduled to be tendered next year.
The process will renew the operators of 60% of the routes of the Transantiago public bus system.