Two of OHL’s Mexican subsidiaries raised US$1 billion in December to refinance debt on three completed sections of its Circuito Exterior Mexiquense beltway north and east of Mexico City. The securities issued by Concesionaria Mexiquense, S.A. de C.V (Conmex) are secured by the toll revenues generated by the beltway under its 49-year DBFOM concession with the federal agency FONADIN.