FS has completed over 100 major bridges, over rivers, canals, lagoons, on the sea between islands, along highways and in the heart of cities and towns, coping with the most diverse geological and topographical conditions, acting either as "contractor" or as "design and construct contractor". Bridge superstructures built by FS comprise the use of postensioned AASHTO concrete girder, prestressed concrete girders, concrete box girders, steel box girders, jumbo steel girders, steel trusses. With its expertise in girder launching, it can launch girders even in the most difficult situations. Bridge types built by FS cover an ample spectrum, traditional type highway bridge, suspension type bridges, railway bridge, mass transit steel bridges, composite type bridges, among others.