When Signs Become Hazards: Staying Ahead of Structural Failure

If your business has a tall pylon sign, when was the last time you had it inspected for wear and tear? If you don’t know, maybe it's time you did. 

Why is Structural Integrity Important? 

Unlike building-mounted signage, pylon signs endure continuous exposure to wind, rain, temperature changes, and changing ground conditions. Over time, these forces can weaken critical components, leading to possible issues such as: 

• Foundation settling or shifting
• Steel corrosion and fatigue
• Loose or failing connections
• Panel or cabinet damage

Key Areas to Inspect 

 A thorough inspection should focus on the following components: 

Foundation and Base

The foundation supports the entire structure. Inspect for:

• Cracks in concrete
• Water intrusion or erosion
• Uneven settling or tilting
• Corroded or loose anchor bolts

 Even small shifts can signal larger structural concerns. 

Support Structure (Pole or Columns)

The main support system should be checked for:

• Rust or corrosion, especially near ground level, and each pipe transition of the structure
• Bending, warping, or stress fractures
• Deterioration of protective coatings

Older signs may require more advanced testing by a certified inspection company to detect hidden damage.  

Connections and Fasteners

Bolts, welds, and brackets are common failure points:

• Loose or missing bolts
• Cracked welds
• Fatigue from wind-induced movement

These small components play a major role in overall stability.

Sign Cabinet and Faces

While often seen as cosmetic, these elements affect structural performance:

• Warped frames or sagging cabinets
• Loose panels that could detach in high winds
• Water intrusion causing internal damage

Loose faces can increase wind load, putting additional stress on the structure.

Electrical and Lighting Systems

Electrical issues can indirectly impact structural integrity:

• Damaged conduit or exposed wiring
• Moisture infiltration
• Heat-related material degradation

Environmental and Load Considerations 

Wind is the most significant force acting on pylon signs. Location matters—open areas and hurricane-prone coastal regions increase exposure. Additionally, modifications to the original design can add weight and alter wind dynamics, necessitating a re-evaluation of structural capacity. 

Inspection Frequency and Best Practices  

To maintain safety and performance:

• Conduct annual visual inspections or each time your sign is serviced
• Perform comprehensive structural inspections every 3–5 years
• Inspect immediately after severe weather events

Best practices include:

• Keeping detailed maintenance records
• Using qualified inspectors or engineers
• Leveraging tools like drones for hard-to-reach areas
• Addressing minor issues early to prevent escalation
  

Conclusion 

Pylon signs are not just marketing assets, they are structural systems that require ongoing attention. Regular inspections help identify and address physical risks.

Taking a proactive maintenance approach helps to ensure safety, extend the lifespan of the sign, and protect the business from unnecessary risk.