The Administración de Infraestructuras Ferroviarias Sociedad del Estado (ADIFSE), trading as Trenes Argentinos Infraestructura, is an Argentine state-owned company created in 2008 to manage rail construction and maintenance in Argentina.

After FA was formally declared in liquidation, railway infrastructure administration was left in the hands of a new organism called Ente Nacional de Administración de Bienes Ferroviarios (ENABIEF, in English: National Entity for the Administration of Railway Assets), created in 1996.

[1] In 2000 ENABIEF was fused with the Dirección Nacional de Bienes del Estado, as part of the National Organism for the Administration of Assets (ONABE), which was formed to administrate all state assets, including the railways.

However, the vast majority of private companies failed in their contractual obligations to maintain the infrastructure.

In May 2015, the new Ferrocarriles Argentinos holding company was created, and ADIFSE became one of its three subsidiaries, along with SOFSE (passenger services) and TACyL (freight).