Bridge # 35-68-14 The Warnke Covered Bridge is a historic covered bridge crossing Swamp Creek in Harrison Township, Preble County, Ohio, northeast of Lewisburg. Built from 1895 to 1896 by Everett S. Sherman, it has a span of 51 feet.
Bridge # 35-68-51 Hueston Woods Covered Bridge was built in 2012 to span over the Four Mile Creek at Hueston Woods State Park. The 108-foot long single span modified Burr arch truss designed covered bridge replaced a metal pony truss bridge at the same location on Camden College Corner Road
Bridge # 35-68-A The replica double-barreled pedestrian 25-foot bridge over Garrison Branch in Fort St. Clair Park was built in the early 1990s.