Bridge # 35-04-14 South Denmark Road Covered Bridge, a lattice covered bridge over Mill Creek near Jefferson in Ashtabula County, Ohio. The bridge, one of currently 16 drivable bridges in the county, is a 76' single span Town truss design. The total length is 100'. Built in 1895 and bypassed in 1975, the bridge still remains open to light traffic. History: 1895 – Bridge constructed. 1975 – Bridge bypassed. Dimensions: Span: 76 feet (23.2 m) Length: 100 feet (30.5 m) Width: 13 feet 3 inches (4.0 m) Height: 11 feet (3.4 m)