The loan is for a 25-year term with a four-year grace period, at an adjustable interest rate.
Local counterpart funds will total $13m.
Montevideo is the main hub for refrigerated containers in the region and its operations have a strong transnational impact, as more than half of its activity involves the transhipment of containers from neighbouring countries.
The port of Montevideo would expand its cargo handling capacity by building a new multipurpose wharf and deepening the access channel to allow access to larger vessels.