Social Impact Assessment Comparison of Composite and Concrete Bridge Alternatives

The definition of sustainability includes three fundamental pillars: economic, environmental, and social. Studies the economic impact on civil engineering infrastructures have been focused cost reduction. It is not necessarily in line with due to lack other factors. Moreover, social pillar assessment has weakly developed compared environmental ones. essential focus evaluate clear indicators that allow researchers compare alternatives. Furthermore, bridge life cycle studies concrete options. This resulted a analysis composite study conducted two stages. first part makes cradle-to-grave evaluation SOCA v2 ecoinvent v3.7.1 databases. carried out four alternatives span lengths between 15 40 m. weighting method recipe used obtain indicators. second compares results obtained from varying steel recycling rate. are prestressed solid slab, lightened box-girder, steel–concrete box-girder. show options best for impact, but box girder solutions better impact. an increase rate increases decreases one.