1. The Schoharie Bridge Collapse, Scour By Group 18 4 th Year Civil Engineering Date: 28 th of October 2005

2. Introduction Background The Bridge The Collapse Causes of Collapse Lessons Learnt

3. Background Design Started in 1949 Completed in October 1954 1955: 100 Year Flood Collapsed in 1987

4. The Bridge Standard Highway Bridge 165 Meters Long 5 Simple Supported Spans 2 Columns

5. The Collapse 5 th of April 1987 Spring Flood Pier 3 Pier 2 Pier 1

6. The Collapse Collapse of Span 2

7. Causes of Collapse Extensive Scour Shallow Foundations Blue Prints Under Reinforced Roadway

8. Lessons Learnt Importance of Footing Depth Under Water Inspections River Flow Design For Rare Events

9. Questions