Burrville Road Bridge (Mercer County, Ohio)
Built 1910Pony truss bridge over Prairie Creek on Burrville Road (CR 33)Open to traffic
Morrow Road Bridge (Mercer County, Ohio)
Built 1913Pony truss bridge over Blierdofer Creek on Morrow Road (TR 158)Open to traffic
Oregon Road Bridge (Mercer County, Ohio)
Built 1913Pony truss bridge over Blierdofer Creek on Oregon Road (CR 164)Open to traffic
Purdy Road Bridge (Mercer County, Ohio)
Built 1913Pony truss bridge over Little Black Creek on Purdy Road (TR 206)Open to traffic