"We have to realise that there is not a single moment to lose, that every effort has to be made every day to bring the construction of Olympic sites and infrastructure forward," said IOC president Thomas Bach.
Rio Games organisers have been repeatedly urged to speed up progress as the country struggles to prepare for the world's two biggest sports events - the 2014 soccer World Cup and the 2016 Olympics.
Bach said he was planning to visit Brazil before February and would meet Brazil President Dilma Rousseff to help improve work between the government and organisers.
"What will be essential and crucial for the success of Rio will be a seamless cooperation and coordination among different levels of government and the organising committee," Bach told reporters.
"To ensure this I will most likely travel with the (IOC) delegation to Rio and Brasilia even before the Sochi Games (in February) to speak with the president of Brazil and speak with other levels of government and the organising committee in such a way to ensure this... because this is definitely needed to have successful Games and to meet the schedules."
With the country already struggling to meet deadlines for next year's World Cup, Games organisers have yet to finalise the overall budget less than three years before the event while also dropping behind in constructing the venues.
Bach said the IOC's Olympic Games executive director Gilbert Felli, who is retiring in August, will only deal with Rio progress after the Sochi Olympics and will continue to do so even after his retirement in an effort to speed up work.
"We have had a request on behalf of the Rio organising committee to put Mr Felli at the disposal of the organising committee," said Bach.
"After Sochi Mr Felli's top priority will be close cooperation with the Rio organising committee and even after his retirement at the end of August he will continue to work closely with Rio 2016."
(Reporting by Karolos Grohmann; Editing by Ken Ferris)
