Modified level II streambed-scour analysis for structure I-70-148-4528 crossing West Fork of East Fork Whitewater River in Wayne County, Indiana

Level II scour evaluations follow a process in which hydrologic, hydraulic, and sedient-transport data are evaluated to calculate the depth of scour that may result when given discharge is routed through a bridge opening. the results of the modified Levell II analysis for structure I-70-148-4528 on Interstate 70 crossing West Fork of East Fork Whitewater River in Wayne County, Indiana, are presented. The site is near the city of Richmond in the eastern part of Wayne County. Scour depths were computed with the Water Surface PROfile model, version V050196, which incorporates the scour-calculation procedures outlined in Hydraulic Engineering Circular No. 18. Total scour depths at the piers were approximately 19.8 feet for the modeled discharge of 6,000 cubic feet per second and approximately 26.5 feet for the modeled discharge of 7,900 cubic feet per second.