The Ohio Department of Transportation, Division of Highways, proposes to replace a three-span arch, bridge across Paint Creek on South Paint Street in Chillicothe, Ohio with a new deck-type structure resting on four sets of piles and four piers. Profiles of the 10-, 25-, 50- and 100-year floods under present conditions and under conditions modified by constructions of the new bridge are presented in this report. The results indicate that the construction of the new bridge will not cause significant changes in the flood profiles or the areas inundated.