Stay Cables

DYWIDAG stay cable systems are used in bridge and building construction, all around the world


Suspension Bridge San

Diego, CA, USA

Since 1970, DYWIDAG has developed, tested, supplied, installed, inspected, monitored, maintained, repaired, and exchanged stay cables for cable-supported structures, including: 

  • Cable stayed bridges

  • Extradosed bridges

  • Arch bridges

  • Cable-supported wind towers

  • Roof structures

The research and development around DYWIDAG's stay cable systems combine the highest safety and reliability standards—with economic efficiency. The DYNA Grip® System, introduced in 2000, was designed to meet the needs of modern cable systems at the turn of the millennium—and is still in use today.  The standard DYNA Grip® System includes installation equipment and project-specific engineering with inspection and test plans, detailed method statements—and a comprehensive inspection and maintenance manual.

Our economical and high-performance stay cable systems reliably transfer the loads from the deck via the pylon to the foundation—and are long-lasting and easy to maintain.

Offered services

  • Cable detailing

  • Damper design

  • Vibration measurements

  • Installation of cables and monitoring devices

  • Pipe repair

  • Cable wrapping


  • Infrastructure Intelligence enabled

  • Cable Sizes between 19 and 127 strands

  • High fatigue resistance

  • Verified acc. to all relevant standards

  • Protection against special exposures / hazards possible

  • Cable illumination optional

  • Various saddle options available

  • Reliable corrosion protection methods

  • Extraordinary axial and bending fatigue performance—for all type of strands

  • Measurements to avoid cable vibration

  • Stay pipes with a low drag coefficient

  • Comply with the international requirements of organizations—including PTI, fib, and CIB/Setra. 

Wind Towers

Cable-stayed Bridges

Extradosed Bridges

Arch Bridges

Dampers protect stay cables from the impact of vibrations, increasing their durability and providing structural safety.
Our engineers can design, test, deliver, install or retrofit cable hardening systems to protect new and existing cable-supported bridges from multiple threat scenarios. Cable hardening can be applied to all cable sizes, following AASTHO bridge security guidelines.
Our lab-tested post-tensioning tendon and cable systems are installed by certified and trained professionals who also supply calibrated installation and stressing equipment.