Government bodies, however, disagree over the timetable for the auction.
Brazil's largest city will receive studies on improving the management of reservoirs to mitigate the effects of flooding and for the construction of new ones.
The projects include 6,000km of roads to be executed under the PPP model, expansion works at five airports and the start of the Vaca Muerta rail link.
The infrastructure sector, however, still doesn't show signs of recovery.
Three companies obtained loans from the Brazilian development bank.
The government wants to guarantee shipping conditions on the river throughout next year, after noticing that the planned US$766mn PPP for the river had a six-month period that did not include dredging works.