Stay cable cleaning
Our experts understand that the surface condition of stay cables is not just about appearance, it directly affects structural performance, durability, and maintenance efficiency. Dirt and moisture can conceal early signs of corrosion, interfere with inspection routines, and even contribute to vibrations or ice formation under certain weather conditions. DYWIDAG's stay cable cleaning service plays a key role in maintaining the full functionality, safety, and lifespan of stay cable systems.
The hidden impact of dirt and weather
Stay cables are continuously exposed to dust, pollution, and environmental contaminants. Over time, and without regular stay cable maintenance, these particles accumulate, trapping moisture that accelerates corrosion and hides visible signs of wear. In humid or coastal climates, biological growth such as moss and lichen can further retain water and degrade protective sheathing.
For HDPE and PE stay sheaths or protective wraps such as Cableskin® , dirt build-up can obscure small cracks or surface changes, delaying early detection and increasing the risk of structural deterioration. The combination of surface contamination and moisture can also alter the aerodynamic behavior of cables - increasing susceptibility to wind- and rain-induced vibrations and raising the risk of ice formation in colder regions. Both effects can influence safety, inspection efficiency, and long-term structural reliability.
Our comprehensive approach
DYWIDAG delivers a comprehensive solution for stay cable cleaning and maintenance,. Depending on project scope and bridge configuration, cleaning is performed either:
Manually, using cherry pickers, lightweight gantries, or rope access - ideal for targeted work and smaller spans.
Robotically, using DYWIDAG’s in-house developed cleaning systems for consistent, high-quality results and maximum safety.
Our robotic cleaning process uses clean, chemical-free water under controlled pressure to remove dirt, debris, and organic build-up. It is environmentally friendly, suitable for any cable length or geometry, and unaffected by bridge height. This method restores the cable’s original surface condition, improves inspection visibility, and reduces long-term moisture retention - helping to prevent corrosion and preserve durability and reduce cable vibration levels.
Why choose DYWIDAG?
Global expertise. Local precision.
With over 160 years of innovation in cable systems, DYWIDAG is a trusted partner for bridge owners worldwide. Our engineers bring unmatched expertise in cable design, installation, and maintenance, backed by deep technical understanding.
Advanced robotic technology
Our proprietary robotic cleaning systems were developed in Germany and refined through decades of field experience. They deliver uniform, repeatable results while significantly reducing manual labor and exposure at height.
Minimal disruption
DYWIDAG’s rope access and robotic methods eliminate the need for scaffolding or heavy gantries, keeping bridges open and traffic flowing. Cleaning operations are completed faster, safer, and more efficiently than traditional methods.
Responsible cleaning
We use pure water only — no chemicals, no residues. Our process safeguards both the environment and the structure, meeting the highest standards of environmental compliance and sustainability.
Your expert stay cable partner
At DYWIDAG, we understand how stay cables perform, age, and interact with the structures they support. Our expertise spans the entire lifecycle of stay cable systems, from design and installation to inspection, protection, and maintenance.
By combining engineering precision, specialized technology, and global field experience, DYWIDAG delivers services that improve reliability, extend service life, and reduce long-term maintenance costs. Whether you’re maintaining an existing bridge or planning proactive protection, our team ensures every cable system continues to perform safely and efficiently.
Because at DYWIDAG, we’re committed to making structures safer, stronger, and smarter.
Are your stay cables in need of servicing? Contact our experts for complete peace of mind.
Our related services
Stay Cable Protection
Providing in-depth technical advice and advanced repair technologies customized to your project's unique conditions.
Stay cable sheath repair
Essential stay cable sheath and cover repair, and replacement services to keep your cable-stayed structures safe and performing at their best.
Inspektion und Prüfung
Gewährleisten Sie die Sicherheit, Leistungsfähigkeit und Langlebigkeit Ihrer Infrastruktur durch umfassende Inspektions- und Prüfdienste, einschließlich visueller Untersuchungen, zerstörungsfreier Prüfungen und geotechnischer Gutachten.
Rope access
Safe and efficient access alternative allowing the delivery of technically complex work safely and efficiently.
Damper replacement and retrofit
DYWIDAG offers inspection, replacement, and retrofit services for stay cable dampers.
Stay cable detensioning and exchange
Controlled release and reinstallation of stay cables, ensuring structural stability and safety at every stage.
Bridge Monitoring
Enhance bridge safety and longevity with real-time Structural Health Monitoring (SHM).
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Gabelkopfverankerung
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