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Third Karnaphuli Bridge, Bangladesh
February 2nd, 2011 by Adam Heller
2010 Be Inspired Award
High-Point Rendel’s Third Karnaphuli Bridge was recognized as a finalist in the 2010 Be Inspired Awards. Bentley’s Be Inspired Awards program showcases Bentley users and their work sustaining the world’s infrastructure―empowering commerce, industry, communications, government, communities and more to serve and benefit people worldwide.
The first major cable supported bridge of its kind in Bangladesh
• Commissioned by: The People’s Republic of Bangladesh, Roads and Highways Department
• Designer: High-Point Rendel
• Project phase: Completed and operational
• Project year completed: 2010
• Location: Chittagong, Bangladesh
• Bridge span: 830m (950m with viaduct)
• Bridge width: 24.4m
• Each main span of main bridge: 200m
• Each side span of main bridge: 115m
• Carriageway: 2 x 7.30m
• Slow-moving vehicle lane: 2 x 1.65m
• Footpath: 2 x 1.5m
• Piling: 40 x 1.5m diameter and 16 x 3.0m diameter
Third Karnaphuli Bridge by High-Point Rendel
Improved capabilities in bridge engineering are helping to make the most challenging bridge projects a success. This project demonstrates how advanced technology can enhance problem solving at every stage of the project delivery process, from planning, design, and engineering to construction simulation and analysis.
The concrete deck is partially supported by stay cables
The Third Karnaphuli Bridge spanning the Karnaphuli River in Bangladesh is a significant new landmark in the port city of Chittagong. Designed to withstand earthquakes, the 950-meter crossing consists of three 200-meter extra-dosed main river spans, two 115-meter side spans, and a 120-meter approach viaduct with 20-meter spans. The design-build contract stipulated that the main bridge structure have the extra-dosed, concrete cable-supported deck—a state-of-the-art building technique pioneered in South East Asia and Japan.
The Third Karnaphuli Bridge represents a symbol of progress for Bangladesh
High-Point Rendel used RM Bridge for static and dynamic global analysis, and simulation of the complete structure including foundation stiffness, piers, and deck for all stages of construction. The $80 million project’s on-time, on-budget completion was due in part to having a viable tender design concept that changed very little during construction.