The Harra Covered Bridge is a historic wooden covered bridge in Washington County, Ohio, United States. Located in western Watertown Township, about 2 miles (3.2 km) north of the community of Watertown, the bridge spans the South Branch of Wolf Creek near the intersection of State Route 339 and Township Road 172. Among the bridge's more distinctive features are its cut stone abutments, its metal roof, and the vertical siding. Although it has been open for well over one hundred years, it remains in strong structural condition, and it served daily traffic into the late twentieth century.