Russia’s military intervention in Ukraine has disrupted the logistics chains of grain exports. Nibulon’s traditional system of transshipment of grain from road to river transport was disrupted due to problems with water transportation on the Dnipro River. This necessitated exploring the possibility of using alternative modes of transportation, including road and rail, to restore the grain terminals. On the basis of scientific methods, ways to improve the interaction of different types of transport during grain transshipment at the terminal are substantiated. A methodology for determining the optimal weight of products transferred from the terminal to the mainline transport is proposed in order to increase the efficiency of logistics operations in the current conditions. A quantitative method for estimating the average daily load on the terminal has been developed, which allows forecasting transportation needs and optimizing traffic schedules. Practical significance includes improving the planning of the terminal, increasing its throughput, reducing transportation costs, and increasing the efficiency of grain exports. The optimal weight of grain for transfer to railroad transportation was calculated. The results can be used to model the operation of other terminals and develop strategies for the development of grain logistics in Ukraine and other countries with developed agricultural sectors.