previous arrow
next arrow

Tunnels &


About Us

Bessac is a company specialized in the construction of tunnels and microtunnels, and has carried out more than 40 years of underground works, in various applications.

Bessac offers:


equipes reactives
A group of highly mobile and reactive teams that are uniquely specialized
plus 40 tunneliers
A fleet of more than 40 TBMs and MicroTBMs
A high capacity for innovation


Tunnel contracting

BESSAC has been building tunnels and microtunnels for more than 40 years. With a wealth of experience, we have realized projects on every continent. Our international activity represents a majority of our business.


Industrial division

  • Strengthened by more than 40 years of experience, the Industrial Division of Bessac has fully mastered the entire production chain, as well as usage of TBMs and their associated equipment.
  • With a full design team, the Industry Division of Bessac boasts highly qualified teams, internationally recognized in the field of underground works.
elit. fringilla commodo felis id, libero nec odio quis dolor. mi,