Damien Boisseau

~ as ~

Narrator (voice)

Laurent Cavrois

~ as ~

Self - President of LISEA from 2014 to 2017

Gilles Godard

~ as ~

Self - Project director of COSEA from 2014 to 201

Bertrand Lemoine

~ as ~

Self - Engineer, architect and historian

Stéphane Carrer

~ as ~

Self - Construction director of the Dordogne viaduct

Romain Nicolas

~ as ~

Self - Technical director at Dodin Campenon Bernard

Olivier Gouin

~ as ~

Self - Industrial director at MESEA

Christophe Pélissié du Rausas

~ as ~

Development director at Vinci

Nicolas Notebaert

~ as ~

Self - Managing director of Vinci Concessions

Hubert Bonin

~ as ~

Self - Historian