1. HOW BRIDGES WORK

2. THE BASICS
Dimensions?
Purpose?
Type?
Design?
$$$$$$?

3. Civil Engineer
Bridges
Canals
Roads

4. Civil Engineer Water/Wastewater systems (sewers) Foundations Tunnels`
Airports

5. BEAM BRIDGE A horizontal structure resting on piers.
Weight supported by piers.
Constructed using concrete/steel.

6. TYPES OF BEAM BRIDGES
TRUSS – a structure consisting of 1 or more triangular units whose ends are connected.

7. TRUSS FORCES Truss members experience BOTH tension and compression
Top and bottom members experience MORE force than the center members
Truss is rigid and can dissipate the weight throughout the structure.

8. Pont du Gard – Vers Pont du Gard
ARCH BRIDGE
Semi-circular structure with abutments on each end.
ALWAYS UNDER COMPRESSION
The shape of the structure dissipates the weight.
Pont du Gard – Vers Pont du Gard
c. 19BC-60AD

9. SUSPENSION BRIDGE
Cables are strung across multiple towers and the deck is suspended from these cables. Cables are held in place by anchor blocks
Cables are under tension, towers are under compression

10. Newport Bridge – Newport, RI
NAME THE BRIDGE
Newport Bridge – Newport, RI
June 28, 1969

11. Tower Bridge – London, England
NAME THE BRIDGE
Tower Bridge – London, England
1894

12. Sydney Harbor Bridge – Sydney, Australia
NAME THE BRIDGE
Sydney Harbor Bridge – Sydney, Australia
1932

13. Magdeburg Water Bridge – Elbe River, Germany
NAME THE BRIDGE
Magdeburg Water Bridge – Elbe River, Germany
October, 2003

14. The Millennium Bridge – London, England
NAME THE BRIDGE
The Millennium Bridge – London, England
June 2000

15. Balsa Wood Bridge
Jeff Cathcart???