Bridge # 35-04-19 Harpersfield Bridge is a covered bridge spanning the Grand River in Harpersfield Township, Ashtabula County, Ohio, United States. This double-span Howe truss bridge, one of currently 16 drivable covered bridges in the county, is the third longest covered bridge in Ohio at 228 feet. A flood in 1913 washed away the land at the north end of the bridge, and the steel span was subsequently attached. Length: 228 feet; Overhead clearance: 12 feet 9 inches