Tangenziale Esterna SpA is responding to the mission of designing, building and managing the Tangenziale Est Esterna of Milan (TEEM-A58) for fifty years from the entry into service. This is the work that, through 32 kilometers of motorway link between Agrate Brianza-Caponago (A4) and Melegnano-Cerro al Lambro (A1) as well as through 38 kilometers of new ordinary roads, rationalizes the congested mobility in the South-East quadrant of the Metropolitan area, is a formidable flywheel for employment and contributes to improving the quality of life and the environment.