The document discusses bridge types, components, selection criteria, and design considerations. It begins by defining what a bridge is and its purpose in transportation systems. It then covers typical bridge components and various structural forms for bridges based on material, span length, and other factors. Key criteria for selecting bridge types include span length, site conditions, cost, and aesthetics. The document emphasizes that aesthetic design requires considering function, proportion, harmony, order/rhythm, and contrast/texture to create pleasing structures that blend with their environments.

4. What is a Bridge? Bridge is the KEY ELEMENT in a Transportation System

5. Structures for Transportation Beauty can be expressed in the structural efficiency, simplicity, and repetition of a bridge. Millau Viaduct, France

7. Bridge Components

10. Types of Bridges Steel Concrete Timber Hybrid Stone/Brick FRP Pedestrian Highway Railroad Short Medium Long Slab Girder Truss Arch Suspension Cable-Stayed Material Usage Span Structural form

12. Bristol Bridge, Bristol, UK Highway Bridges

13. Electric Wharf Footbridge, UK London Millennium Footbridge, UK Pedestrian Bridges

14. The Forth Railway Bridge, Scotland Thames Ditton Railway bridges Railway Bridges

24. Selection of a Bridge Type by Span Lengths

26. Aesthetics : What it means?

37. Establish requirements Setting design objectives and principles Develop design Engineering Process Analysis of design Design Refinement Implementation Plan Understand context