The project is being tendered as a PPP, with a 30-year long concession. The winning bidder will be selected on the basis of the lowest-cost offer.

The Reais 3.5bn ($US 1.7bn) project comprises the 5.6km northern extension of Line 1 from Acesso Norte to Pirajá, which will have three stations, and Line 2, which will run for 24.2km from an interchange with Line 1 at Bonocô Avenue to Deputado Luís Eduardo Magalhães International Airport and Lauro de Freitas.

Construction is expected to start in 2013 and both lines will be completed in 2016.

Bidding documents can be viewed for free for two months at