Massy–Valenton West: removal and replacement of overhead lines
The summer of 2025 marked a key milestone in the reconfiguration of the Massy rail hub. As part of the Massy–Valenton Ouest (MVO) high-speed rail project, a major operation was carried out to prepare for the creation of a second track dedicated to high-speed trains, which is essential for improving traffic flow in the south of the Île-de-France region.
A diversion to accommodate the future high-speed rail line
Between Les Baconnets and Massy-Verrières stations, ETF’s catenary teams carried out the shifting of 1.5 km of RER B catenary lines, consisting of the complete removal and reinstallation of these facilities.
This work freed up the space needed for the future high-speed rail link.
This is a crucial investment to strengthen the network’s capacity and anticipate the mobility needs of more than one million daily users.
A technical challenge completed in just nine days
The catenary work was carried out during a nine-day complete suspension of traffic, mobilising up to 18 teams per day working in three continuous shifts.
The precision, coordination and rigour required for this operation highlighted the expertise of our catenary teams.
An exemplary collaboration by VINCI Construction
As the consortium leader, ETF mobilised its track and catenary experts and worked alongside:
- Sogea Environnement, responsible for the catenary supports and platform,
- Botte Fondations and Eurovia, mobilised for the deep foundations and waterproofing of the rail bridge.
The work was completed on schedule, allowing commercial traffic to resume on 28 August. The Massy sector is now ready to welcome the second TGV line, which will permanently transform rail operations between Paris and south-western France when it enters service.
