Bessac has mastered the entire tunnel production chain: from TBM concept and manufacture through to completion of tunnel projects.


Key Skills


Proficiency in all size of projects, from MicroTBM to subway


Strong capacity for innovation


All TBM types

Partout sur la planete

Global presence

Specialized teams


Highly responsive

The ability to commit to complex projects:

  • Constrained urban environments: many projects completed in large global cities
  • Variable local contexts: present in some 30+ countries and in all sectors
  • Specific geological conditions: proficiency in all excavation techniques
  • Time constraints: the ability to rapidly mobilize both equipment and human resources
  • But also proficient in small projects

A factory at the heart of an industrial department:

  • Manufacture of TBM and their associated materials (backup trains, etc.)
  • Design department
  • Technical assistance
  • Refurbishment, maintenance, and operations
  • Innovation and development of specific materials