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This paper studies scour features and velocity field using experimental and numerical models at rectangular piers under influence of contraction upstream abutments. A bridge model of two vents of 8cm width each is built to conduct experiments. Extra-piles are proposed upstream rectangular abutments. Different relative extensions of piles are tested. In addition, a new abutment of a relative width ranges within 0.0 to 1.25was proposed instead of piles. The flume's dimensions are 40cm width, 20doi:10.21608/jesaun.2017.116082 fatcat:ljprei7lzfa2faicnhy2cw6jjq