Bridge # 35-04-16 Doyle Road, or Mullen Covered Bridge is a 94 feet long covered bridge that spans Mill Creek in Jefferson Township, Ashtabula County, Ohio. Built in 1868, the Town lattice truss structure is 90.9 feet long, with the largest span length of 79.1 feet and deck width of 18.4 feet. The vertical clearance above deck is 13.7 feet.
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)