The Central American development bank will provide funds to finance the construction of 194km of highways paved with hydraulic concrete.
To keep the trains running, the city's legislative organ approved to extend the current concession by Metrovías for one more year.
The funds will be provided via the infrastructure fund for the countries of Mesoamerica and the Caribbean, also known as Yucatán fund.
The consortium also commits to long-term investments in the airports.
Port modernization project has drawn Turkey's Yildrim Group and Peruvian consortium Grupo Romero as potential bidders.
Report on climate investment by the International Finance Corporation highlights the advantages these sectors offer in Latin America.
The just opened San Juan-La Pita section is one of five of the overall project to upgrade the Santiago-David part of the highway.
The funds are necessary to follow Infraero's private partners in the capitalization of several airports.
Both federal and state government to invest total of around US$24mn.