The strong waves, according to the official version, caused the collapse of a section of viaduct about 50 meters built by the sea, which was inaugurated last January with a cost of about 45 million reais ($ 12 million) .
The bike path was part of a project to connect all the coast of Rio and serve about 70,000 riders a day, according to calculations by the Mayor.
The mayor wanted the project quedase fully completed before the Olympics, between 5 and 21 August.
This tragedy has reminded that in November 2013 at least two people were killed when a crane collapsed during construction work Sao Paulo stadium which hosted the opening ceremony of the World Cup Brazil 2014.
At least eight people were killed in different accidents in Brazil stadiums built for the World Cup two years ago.
