The country's public works ministry plans to start the project this year, but local irrigation channel owners and water utility Aguas Andinas are clashing over water rights.
The Colombian lender - a unit of Scotiabank - is targeting the country's huge road-building program and aiming to strengthen its digital muscles.
The first stretch of the US$64mn corridor was expected to be operating next month.
Once completed, the station will be one of the largest in the state capital's metropolitan region.
Compliance departments have become more prominent in Brazil in recent years, amid the wave of anti-corruption probes.