A cable-stayed bridge, also known as a diagonal bridge, features a structural system where the main beam is directly supported by multiple cables anchored to bridge towers. This system consists of three primary components: the pressurized tower, strained cables, and bent beam body.

• Main Beam: Typically constructed from concrete, steel-concrete composite, or steel structure
• Cable Tower: Primarily concrete structures, sometimes steel-concrete combination or steel
• Stay Cable: Manufactured from high-strength materials like steel wire or steel strand

Ideal for crossing larger rivers due to its substantial main span capacity.

Suited for small to medium-sized rivers and urban channels with smaller main spans.

Three-tower four-span and multi-tower designs increase structural flexibility but require careful engineering to manage deformation.

• Reduced beam height (typically 1/50 to 1/200 of span length)
• Significantly decreased structural weight
• Enhanced crossing capacity
• Efficient load distribution through cable system

• Support construction method
• Push construction method
• Rotary construction method
• Cantilever construction (both assembly and pouring)

Cable towers serve as both structural elements and aesthetic features, with multiple configuration options:

• Single column type (simple structure)
• A-shape configuration
• Inverted Y type (enhanced stiffness)

Three primary cable plane positions optimize performance for different applications:

• Single cable plane (best for wide field of view)
• Vertical double cable plane (improved torque resistance)
• Diagonal double cable plane (superior wind resistance)

• Exceptional long-span capability surpassing traditional beam bridges
• Visually striking and iconic architectural presence
• Structurally efficient load distribution system
• Reduced material requirements compared to conventional designs
• Enhanced resistance to wind and seismic forces