Abstract: The site location selection of bridge depends on the stabilities of the abutment slopes and bridge structures, which are not clearly defined in current industrial standards or codes. This paper studied the stability of the abutment slopes for Longjiang bridge on highway from Baoshan to Tengchong by performing a comprehensive slope stability evaluation considering various terrain condition changes and slope failure modes. The proposed scheme of moving back bridge abutment 40 meters provides long term stability without requiring slope stabilization measures. The methodology used in this project will provide some guidance similar projects.

Key words: Site Selection for Bridges, Slope Stability for Bridge Abutments, Design Alternates, Recommended Bridge Site