The government of the Brazilian state will now prioritize repaving a 60km stretch between Ibititaia and Barra do Mendes municipalities.
The country's transport ministry highlighted that it has managed to resolve bottlenecks in seven projects in the 4G highways program so far.
The government estimates that the country will need US$110bn in infrastructure investments in the coming years and is proposing new ways to finance them.
The prosecutor alleges that the tender process favors mining company Vale over other potential competitors.
The US$238mn operation involved the firm that owns the concessionaires of Santiago's Vespucio Norte highway and San Cristóbal tunnel.
The conflict between authorities and workers at the housing ministry has halted all environmental evaluations, including that for the Central Railway project.