Concept design on behalf of AGENCE NATIONALE D’ÉTUDES ET DE SUIVI DE LA RÉALISATION DES INVESTISSEMENTS FERROVIAIRES. Identification of the optimal technical and economical solution for the junction (for freight trains) between Senia/Arzew via Hassi Mefsoukh railway line and Bethioua industrial zone. The project is 12km long and is divided into two sections: the first one is parallele to the Hassi Mefsoukh – Mostaganem railway line and the second one will be made by a single track to the industrial zone. Coding performed engineering services for preparation of the design of the alignment and all related primary and secondary civil works.