The study 'Hypothesis of technological scenario and strengthening of port infrastructures for the achievement of a multimodal transversal corridor from Spain to the Adriatic region, recently edited by the Interregional Authority for Public Works of Lazio, Abruzzo, Sardinia of the Ministry of Infrastructures, is to be considered under this perspective. The analysis could also be restricted to a low Origin-Destination matrix, yet representative of the examination to define according to the available data on the import-export of the corridor's area of influence. The analysis should be completed introducing a new offer scenario, adequate to the examined corridor, and assigning both the possible generated demand and the one diverted from the existing routes, comparing all the relevant alternative options; the comparison should include for each O-D also a thorough and extended analysis assessing every transport cost including externalities corresponding to the pros and cons achieved and born by society, yet not convertible in monetary terms for the lack of a market.