Actually it's easy to inflate prices when politicians are corrupt, also https://translate.kagi.com/globoplay.globo.com/v/3474112

  Overpass collapses in Belo Horizonte, killing two

This happened where I live over 10 years ago, a huge investment that collapsed when they tried to hammer the support off. This was overseen by Cowan and had many engineers signing off.

The bottom line is when there is political interest, even guerrilla infra might work, but nothing survives corruption and neglect. The case of the makeshift bridge is only a matter of making the required tests and adaptations to make it legal or condemning the structure and building a new one.