The contract was awarded as a part of the wider Grand Paris Express programme.
RATP has selected the consortium to conduct works package GC02 of the planned Line 14 South, which will run between Orly Airport and Olympiades in the 13th arrondissement of Paris.
The contracted works will require an earth pressure balance tunnel-boring machine to excavate a 4.6km-long tunnel from the future Maison Blanche Paris XIII station to the TBM starting shaft at Jean Prouvé.
The construction of the new Kremlin Bicêtre Hôpital station, as well as five ventilation and emergency shafts, will also be carried out as part of the deal.
Work on the project is currently scheduled to be completed in 72 months and will create almost 250 jobs.
The completed Line 14 South is anticipated to be used by more than 260,000 commuters from Paris, and the Val de Marne and Essonne départements.
In addition to providing a rapid transport alternative between Paris and Orly Airport, the line will offer connections with metro Line 7, Line C of the Paris RER regional express system and Line 7 of the tram network, as well as Lines 15 South and 18 of the Grand Paris Express rapid transit system.
The Vinci Construction consortium comprises lead company Dodin Campenon Bernard, Vinci Construction France, Vinci Construction Grands Projets and Botte Fondations.
Vinci Construction and Spie batignolles are also involved with the extension of Lines 4, 12, and 14 of the Paris metro.
The two companies have also formed a consortium, which has been awarded works packages T3C (€926m) and T2D (€156m) for Line 15 South of the Grand Paris Express programme.