AN ARCHITECTURAL APPROACH COMBINING 3D SCANNING AND UNPUBLISHED ARCHIVES TO THE ANALYSIS OF A 19TH-CENTURY ENGINEERING STRUCTURE: CASE STUDY OF THE CHIFFA RAILWAY VIADUCT ALGERIA. (2025). International Journal of Innovative Technologies in Social Science, 1(45). https://doi.org/10.31435/ijitss.1(45).2025.3143