Corrugated flexible Soil Steel composite culvert or bridge (SSCB) having larger spans are being constructed more frequently around the world. Durability has been improved with surface treatment specifications being defined in bridge codes. Therefore, life span today is fully comparable with other bridge types. The main aim of this research is to investigate the performance of soil-steel bridge. Finite element modelling (FEM) were implemented adopting software package PLAXIS 2-D version 8.2 non-linear (2004). The effect of geogrids in the backfilling soil to reduce stresses laying on the steel bridge were investigated. Simulation of soil non-linearity was obtained using the Mohr-Coulomb constitutive model. The results elucidated that the use of geogrid in backfilling soil had significant influence on reducing bending moments in the corrugated steel sheets, especially for low compaction.