1. Bridges Engineering Design Mrs. Hodgson

2. Materials Steel Steel Beams Beams Cables Cables Connections Connections Concrete Concrete Roadway Roadway Beams Beams Stone Stone Wood Wood

3. What do bridges Carry? Cars, Trucks, Motorcycles, etc… Cars, Trucks, Motorcycles, etc… Trains Trains People People Pipes – gas, water, electric wires, etc… Pipes – gas, water, electric wires, etc… Extreme Loads - earthquakes/wind/impacts Extreme Loads - earthquakes/wind/impacts All of these are “Live Loads” Self-weight is “Dead Load”

4. Types of Bridges Girder Girder Simple spans Simple spans Continuous spans Continuous spans

5. Girder Bridge Simple Span Continuous Spans

6. Girder Bridge How many spans do you see?

7. Types of Bridges Girder Girder Simple spans Simple spans Continuous spans Continuous spans Truss Truss Through truss Through truss Pony truss Pony truss Deck truss Deck truss

8. What is a Truss?

9. Truss Types: Bridges Through Truss Pony Truss Deck Truss

10. Bridge Truss Types

11. Truss Bridges Top Chord Bottom Chord Diagonal Vertical

12. Truss Bridges

13. Trusses

14. Victory Bridge

15. Truss Bridges SR33 Bridge Northampton County, PA

16. Types of Bridges Girder Girder Simple spans Simple spans Continuous spans Continuous spans Truss Truss Through truss Through truss Pony truss Pony truss Deck truss Deck truss Arch Arch Tied arch Tied arch Fixed arch Fixed arch

17. Fixed Arch

18. Tied Arch

19. Arch Bridges Cold Spring Arch Bridge Santa Barbara, CA Fixed arch

20. Arch Bridges Birmingham Bridge Pittsburgh, PA Tied Arch Fort Duquesne Bridge Pittsburgh, PA Tied Arch

21. Types of Bridges Girder Girder Simple spans Simple spans Continuous spans Continuous spans Truss Truss Through truss Through truss Pony truss Pony truss Deck truss Deck truss Arch Arch Tied arch Tied arch Deck arch Deck arch Cable-stayed Cable-stayed

22. Cable-stayed Bridges

23. Sunshine Skyway Tampa Bay, FL Millau Viaduct France

24. Types of Bridges Girder Girder Simple spans Simple spans Continuous spans Continuous spans Truss Truss Through truss Through truss Pony truss Pony truss Deck truss Deck truss Arch Arch Tied arch Tied arch Deck arch Deck arch Cable-stayed Cable-stayed Suspension Suspension

25. Suspension Bridges Bay Bridge San Francisco, CA Manhattan Bridge New York, NY

26. Suspension Bridges Golden Gate Bridge San Francisco, CA Bronx-Whitestone Bridge New York, NY

27. Suspension Bridges Verrazano Narrows Bridge New York, NY Brooklyn Bridge New York, NY

28. Mixed Bridge Types

29. Brooklyn Bridge

30. Foundations

31. Questions?