Directed by Olivier Lacaze
Damien Boisseau
Narrator (voice)
Laurent Cavrois
Self - President of LISEA from 2014 to 2017
Gilles Godard
Self - Project director of COSEA from 2014 to 201
Bertrand Lemoine
Self - Engineer, architect and historian
Stéphane Carrer
Self - Construction director of the Dordogne viaduct
Romain Nicolas
Self - Technical director at Dodin Campenon Bernard
Olivier Gouin
Self - Industrial director at MESEA
Christophe Pélissié du Rausas
Development director at Vinci
