Damien Boisseau
Role(s): Narrator (voice)
Laurent Cavrois
Role(s): Self - President of LISEA from 2014 to 2017
Gilles Godard
Role(s): Self - Project director of COSEA from 2014 to 201
Bertrand Lemoine
Role(s): Self - Engineer, architect and historian
Stéphane Carrer
Role(s): Self - Construction director of the Dordogne viaduct
