Hello Matheus,
thanks for answering.
Yes, it is about Nova Transnordestina railway, which is still under construction between Iguatu and Acopiara, if You have a look on the latest satellite pics and also StreeetView. Well, I do just have info like https://pt.wikipedia.org/wiki/Transnordestina. I think, I am setting this on "under construction".
Regards,
Anna Catarina