This project was abandoned due to profitability concerns the cost of replacing the then Corails with TGVs would be high, whereas the time gain would be modest. The Basse-Normandie and Haute-Normandie regions would therefore have to content themselves with a more basic project improving the infrastructure of the "classic" line.
In , the idea was reactivated with the Grand Paris: for some policy-makers, this line would better connect Paris to its "natural port", Le Havre, but still a "classic" TGV line wouldn't be appropriate enough. However, studies and the public debate showed that a new line was needed, especially to replace the current Paris - Mantes-la-Jolie line, which can't take more trains. The current Rouen-Rive-Droite station was already at the time deemed too small to appropriately receive all trains with only six tracks.
As , the project is still begin studied. Only studies have been funded and the realization is not expected before Plans are the following:. Trains from and towards Normandy will still begin and terminate at the current Paris Saint-Lazare station , which would be somewhat modernized. The new line would formally begin in the Parisian suburb of Nanterre , west of the current La Garenne-Colombe station.
In order to not destroy numerous habitations in the suburbs, it is planned to build the line with a 20km-long tunnel, passing two times under the Seine river and emerging west of current Poissy station. From then, it would be laid on surface, closely following the A13 motorway, to join existing tracks in the current Mantes-la-Jolie station. In Rouen, the current station Rouen-Rive-Droite is too small and is impossible to extend because it is located between two tunnels and in a very dense sector.
In addition to Paris - Rouen - Le Havre Intercity trains, the station also have to receive regional trains from Amiens and Caen and local trains. Thus, a new station would be constructed on the left blank of the Seine river, on a decommissioned industrial site called Saint-Sever.
