1. BRIDGES

2. Beam Bridges

3. Typical Railway Beam Bridge

4. Truss Bridges

5. Typical Railway Truss Bridge

6. Allegany River Bridge, Pennsylvania

7. Coleman Bridge, Virginia

8. Firth of Forth Bridge, Scotland

9. Arch Bridges

10. Roman Aqueduct, France

11. Thomas Viaduct, Maryland

12. Garabit Viaduct, France

13. New River Gorge Bridge, West Virginia

14. Bixby Creek Bridge, California

15. Hanover Street Bridge, Maryland

16. Black Canyon Bridge, Nevada

18. Suspension Bridges

19. Golden Gate Bridge, California

20. Akashi-Kaikyo Bridge, Japan

21. Sunshine Skyway Bridge, Florida

22. Combination Bridges

23. Tower Bridge, London

24. Francis Scott Key Bridge, Maryland

25. Chesapeake Bay Bridge, Maryland

26. Duluth Aerial Lift Bridge, Minnesota