Bujnak, Jan2012-04-302012-04-302011-05-29https://dspace.univ-tlemcen.dz/handle/112/595Energy consumption, harmful air emission and natural resource depletion as three environmental concerns are investigated on the prestressed concrete and to equal extend on steel- concrete composite highway bridges. The main results presented in the paper validate clearly advantage of steel as structural material particularly from the point of view of sustainable development.enenergy consumptionair emissionsresource depletionsteel and concrete structureslife cycle assessmentArticle