This new station became Franklin D. Roosevelt station in 1946 when the nearby Avenue Victor-Emmanuel III was renamed Franklin D. Roosevelt Avenue, in honour of US President Franklin D. Roosevelt who had been an ally of France during World War II, as opposed to Victor Emmanuel III, the king of Italy who, although allied with France during the First World War, had fought against France as king of Fascist Italy during the Second World War.

The inauguration of the finished station involved a large ceremony on the night of 1 March 1957, with two ramps equipped with tables of food for the invited guests.

The platforms of the two lines are of standard configuration: there are two per stopping point, they are separated by the tracks located in the centre and the vault is elliptical.

On line 9, the metalwork is in the form of honey-coloured aluminium panelling comprising a set of brass-rimmed display cases.

This layout is complemented by yellow Motte style seats and specific lighting canopies with metal slats in a shape close to a semicircle.