"Bridges" is a PowerPoint for primary and secondary students that provides an overview of the different types of bridges and their uses. It also highlights careers in infrastructure development specific to bridge building and maintenance. Additionally, this lesson can be paired with a "Bridge Building" activity.

1. Bridges

2. Why do we need bridges?
OGo over obstacles
O River
O Lake
O Road
O Canyon

3. Common Types of Bridges
O Arch
O Beam
O Cantilever
O Suspension
O Truss

4. Arch

5. Beam

6. Cantilever

7. Suspension

8. Truss

13. Careers with Bridges
•Salary: $51,000 – $61,000
•Education: Bachelor’s
•Experience: 0-2 years
Civil Engineer
•Salary: $50,000 – $57,000
•Education: Bachelor’s
•Experience: 0-2 years
Geotechnical
Engineer
•Salary: $51,000 – $55,000
•Education: Bachelor’s
•Experience: 0-2 years
Structural Engineer
•Salary: $26,000 – $34,000
•Education: High School Diploma/G.E.D.
•Experience: 0-2 years
Heavy Assembler
•Salary: $43,000 – $57,000
•Education: Bachelor’s
•Experience: 0-2 years
Construction
Coordinator

14. Civil Engineer
O Designs and supervises construction
projects such as airports, bridges, channels,
dams, railroads and roads
O Responsibilities also include estimating
costs and personnel and material needs,
preparing proposals and establishing
completion dates

15. Geotechnical Engineer
O Prepares and inspects projects involving
drilling and exploration
O Responsible for geological mapping, report
writing, site characterization, numerical
modeling and analysis of
excavations/supports

16. Structural Engineer
O Designs load-bearing structures or structural elements,
such as buildings, bridges or roadways
O Performs analysis of building materials for use in
construction
O Develops blueprints or specifications for use during
construction and ensures all projects comply with
applicable codes and regulations
O Determines cause of structural failures, damages and
defects through site investigations
O Provides reports detailing investigations and assessment of
damages to the structure

17. Heavy Assembler
O Assembles fabricated parts to relatively
large or heavy subassemblies and complete
units
O Tests and calibrates parts and mechanisms
to meet tolerances and product
specifications

18. Construction Coordinator
O Coordinates construction scheduling and
communication, and acts as a liaison to project
management concerning bids, subcontracting,
progress and delays
O May be responsible for estimates, schedules,
materials and purchase order
O Supervises the installation of equipment and
components in assigned field
O Requires technical knowledge to assist installing
contractors

19. Build Your Own Bridge
O Using newspaper (1), masking tape (6 ft)
and straws (15), create a bridge
O Judging is based on
O Mass of your bridge
O Mass your bridge can support
O Final score = mass supported/mass of
structure
O Bridge must span 1 foot