This consultation is part of the project to double the high-speed line between Massy and Valenton Ouest (MVO).

The purpose of the contract is to carry out sound protection works between the MASSY-VERRIERES and LES BACONNETS stations, which aim to build a 155ml acoustic wall along track 2 (towards PARIS) between PK 18+060 and 18+215 as well as a construction track.

The work includes, among other things:

- Carrying out execution studies

- The installation of a 200 ml site right-of-way, including fencing and trackside walkway

- The creation of 200 ml of construction track

- The earthworks of 1300 m3 of earth on a railway embankment and property line

- The creation of 33 blocks based on 2 type III or IV micropiles drilled with mud

- The construction of 700m² of single-sided acoustic screen with die-cast concrete finish, including support posts

The description of the works and their technical specifications are indicated in the Special Technical Clauses (CCTP), and the constraints of realization in the Cahier des Clauses Particulières de Réalisation (CCPR).