To evaluate the opportunities of the port of Constanza we will investigate the effect of economical factors and improvements of infrastructure to the throughput and the amount of cargo transiting a country. We will focus on the South-East European region to link our findings to Romania and its competitors in the geographical area. We obtain significant differences between improvements on infrastructure and economical factors in low developed countries compared to high developed countries. Then we create a multinomial logit model to explore the incentives for shippers to select a specific port and following route by road, rail or barge transport to the hinterland regions. The most important findings derived from this model contain the negative and significant effect of transport time and the insignificant effect of transport costs. To investigate the efficiency of a port we include operational efficiency measures such as capital and labor productivity, and asset utilization rates to the multinomial logit model.