"Increasingly expensive and unfeasible"

But then the governments, engaged in a partisan struggle, modified the urban development plan several times and, for clientelistic rather than urbanistic purposes, changed the tramway for buses. At the same time, the city received millions of people displaced by violence, making it one of the most densely populated cities in the world.
Bogotá today is a particularly segregated city, where, generally speaking, the rich live in the north and the poor in the south. Most people live far from most jobs. Millions must travel three to four hours a day to get to work.
How long has this project been going on?
Experts agree that the Bogotá metro was never so close to completion as in the 1990s, when there was consensus on a system and a form of financing.
But three things happened: the country entered a serious economic crisis, an earthquake in the coffee region diverted the State's efforts, and the Medellín metro, inaugurated in 1995 after 10 years of obstacles, cost twice as much as budgeted.
"The Medellín metro spent more money than it should have and from that moment on a metro law was created that imposed many restrictions to do so," says Valentina Montoya, a lawyer and mobility expert.
"In the midst of the crisis and with that law it was easier to do the transmilenio, which was cheaper and did not demand so many requirements."