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Nîmes-Montpellier Railway Bypass (CNM), France

A 80km high speed railway for freight and passengers which forms part of the Mediterranean High Speed Link. In operation since 2017



The Nîmes-Montpellier Bypass (CNM) Project is a 25-year contract for a new 80-kilometre section of railway for both freight and passenger traffic between Nîmes and Montpellier. It is an extension of the Mediterranean High-Speed Link which was commissioned in 2001.

The line has been developed for several reasons:

  • serving both passenger and freight rail services,
  • adding substantial capacity to the existing east-west transport corridor,
  • bypassing the cities of Nîmes and Montpellier, and
  • serving as an extension to a strategic rail route from Barcelona to Avignon and beyond.

OC’Via, the Project Company, signed the 25-year PPP contract with SNCF Réseau, a government entity which owns the national French railway network.

The infrastructure was commissioned in 2017, on schedule. In 2019, Meridiam increased its ownership from 53% to 73% by acquiring the shares of the industrial partners.


In Operation, completion date 13 November 2017


Learn more about the project:

Nîmes Montpellier High Speed Rail Line

Launch of the First commercial freight train on the CNM (Nîmes-Montpellier Bypass)


for High Speed trains and freight trains in South of France



Over 12,500

trains in 2019


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