Freight transport is very important to China's plans in Latin America and its continued global expansion. Land transport is vital to such an ambitious project as the New Silk Road, which seeks to grow world trade with China at the center.
In a context of trade and territorial dispute with the USA, China seeks to control more land routes in South America to move its goods more easily. This situation is one more example of the confrontation between Chinese and U.S. interests in Latin America.
It seems that China seeks an integration process in South America for its own benefit. The dispute is reflected in the development banks financed by each superpower and their percentage of participation in future constructions.