Burrville Road Bridge (Mercer County, Ohio)
Built 1910
Pony truss bridge over Prairie Creek on Burrville Road (CR 33)
Open to traffic

Morrow Road Bridge (Mercer County, Ohio)
Built 1913
Pony truss bridge over Blierdofer Creek on Morrow Road (TR 158)
Open to traffic

Oregon Road Bridge (Mercer County, Ohio)
Built 1913
Pony truss bridge over Blierdofer Creek on Oregon Road (CR 164)
Open to traffic

Purdy Road Bridge (Mercer County, Ohio)
Built 1913
Pony truss bridge over Little Black Creek on Purdy Road (TR 206)
Open to traffic