Bogotá would not be the first developing this type of rail transport, there are many cities around the world that use an elevated metro which handles the population of these cities, for example, Vancouver, BC; Chicago, Illinois; and New York city, New York. This system actually works, and in Bogotá it could be used over the already existing roads of Transmilenio. In the south and north highways, this metro could be perfectly built because it will not affect much the neighborhoods giving the size of these roads.
There are some pros and cons given by the citizens. Some people say that it also would be better for transport because of the view they could appreciate while using it, and it would be easy to connect with other transports. (Info Estructura, 2017)
But there are also disadvantages of this elevated metro, and there are a lot of people who do not approve it. One reason could be that the most transited places in Bogotá do not have enough space to handle and elevated metro, and it is impossible to mix underground and elevated trains all over the city. The downtown of Bogotá is one of the places that needs good transport the most, for its small streets it just could have an underground metro as long as Carrera Séptima.
The use is not the only problem because the infrastructure of Bogotá can affect a big construction like this. Carolina Flechas (n.d) presents the stand of Jorge Puerto, professor of civil engineering, saying that some of the floors in Bogotá are made of clays, so the underground metro will not affect the architecture of the city. These floors increase the seismic waves that would affect the elevated metro more than the undergrounded.
So, having an elevated metro can be dangerous for the safety of the city. These implications show that Bogotá was not as well constructed as other cities may have been, and this is something that delays the study and the developing of any big construction. There are transited