Extradosed Bridges An extradosed bridge is a type of bridge that extends beyond the supporting structures (such as the main deck or towers) on either side. T...
An extradosed bridge is a type of bridge that extends beyond the supporting structures (such as the main deck or towers) on either side. This configuration creates a bridge that is self-supporting and independent of the supporting structure.
Examples:
The Through Arch Bridge at the University of Michigan is an extradosed bridge that is supported by towers on both sides.
The Double Deck Truss Bridge in New York City is another example of an extradosed bridge.
Advantages of extradosed bridges:
Self-supporting: They do not require additional support from the main structure, making them more efficient and cost-effective.
Improved aesthetics: They can create a visually appealing and distinctive bridge design.
Reduced wind resistance: Their design can minimize wind uplift, leading to increased stability and performance.
Disadvantages of extradosed bridges:
Complex design: They are more complex to design and build than traditional bridges.
Limited span: Their self-supporting nature often restricts their span compared to conventional bridges.
Higher cost: They are typically more expensive to build than traditional bridges.
Applications of extradosed bridges:
High-span bridges: They are well-suited for long and wide bridges, where traditional bridges may be impractical.
Multi-span bridges: They can be used to create bridges with multiple lanes or tracks.
Offshore structures: They can be used to connect structures in the ocean, such as platforms or wind farms.
Overall, extradosed bridges are a sophisticated and efficient bridge type that offers unique advantages for specific applications. While their complex design and limited span may present challenges, their aesthetic appeal and wind resistance advantages make them a viable option for certain projects.