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<br />'V~~C <br /> <br />Hydraulic Engineering Circular No. 18 <br /> <br />U.S. Department <br />of Transportaion <br /> <br />Federa1 Highway <br />Administration <br /> <br />EVALUATING SCOUR AT BRIDGES <br /> <br />by <br /> <br />E. V, Richardson, Ph.D., P.E. <br /> <br />and <br /> <br />FHWA Hydraulic Engineers <br /> <br />Office of Engineering <br /> <br />Bridge Division <br />