Vilka broar har byggts av Roebling?

2. Roebling Suspension Bridge (Cincinnati-Covington)

3. Niagara Falls hängbro

4. John A. Roebling Suspension Bridge (Pittsburgh)

5. Smithfield Street Bridge (Pittsburgh)

6. Delaware akvedukt

7. Monongahela Suspension Bridge (Pittsburgh)

8. Clark's Ferry Bridge (Ohio River)

9. Wheeling Suspension Bridge (Wheeling, West Virginia)

10. Covington och Cincinnati Suspension Bridge