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

Nicolas Notebaert

Self - Managing director of Vinci Concessions

Hubert Bonin

Self - Historian