Metrotres Consortium (Ingerop Conseil et Ingenierie, PricewaterhouseCoopers Corporate Finance S.L., PricewaterhouseCoopers S. Civil de R.L., Bustren PM S.L., Alpha Consult S.A. and Metropolitana Milanese S.P.A.) has been awarded the contract for the feasibility studies to determine the best route out of six proposed. In addition, it will also draw up the preliminary engineering design for each alternative