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A field crew installs a galvanized steel truss on the base of an aging wood pole.

Pole Hardening

Stronger poles and safer networks at a lower lifetime cost.

PoleCo funds and manages condition-based inspection, treatment, restoration, and replacement programs to strengthen pole networks, extend the useful life of viable assets, and reduce our customers’ expected long⁠-⁠term costs.

Earlier intervention preserves more options.

Pole maintenance competes with other infrastructure priorities for capital, crews, and attention. PoleCo uses field-verified condition data and experienced field crews to identify deterioration earlier, restore viable poles, reduce decay, avoid unnecessary and costly pole replacements, and reduce long⁠-⁠term costs for our customers.

Close-up of a pole at the groundline, where the wood is cracked, soft, and rotted just below the soil.
Decay starts at the groundline, where it can’t be easily seen.

What the program delivers

Safety & resilience.

Identify deterioration earlier, prioritize at-risk poles, improve long⁠-⁠term structural reliability, and reduce risk and liability.

Dedicated focus.

Pole maintenance receives consistent capital, technical resources, and management attention.

Proven methods.

Use inspection records, measured condition, and engineering analysis based on 90+ years of field data to direct work where it matters most.

Lower lifecycle costs.

Proactive investment in viable assets to avoid unnecessarily premature replacements.

~75%

fewer wood pole replacements after Hurricane Irma (2017) than after Hurricane Wilma (2005), once Florida Power & Light moved to condition-based inspection.

Source: Florida Power & Light 2023–2032 Storm Protection Plan, as summarized in U.S. DOE, Utility Pole Maintenance and Upgrades (2024).

How we do it

An excavated pole base shows dark, soft decay just below the soil line.
Groundline decay, found by excavation

Inspect at the groundline.

Inspect poles using appropriate field methods, assessing deterioration, remaining strength, and structural condition to identify where intervention is needed.

The base of an aged wooden pole reinforced with a new galvanized steel truss secured by steel bands.
A steel truss restoring a weakened pole

Treat and restore.

Apply remedial treatments to help control decay and use engineered restoration methods to extend the service life of poles that remain suitable for reinforcement.

A stack of new treated wood poles in a gravel yard, with one old, weathered pole lying beside them.
Replacement poles

Replace by condition.

Prioritize poles that cannot be appropriately restored and complete necessary replacements based on condition, safety, and network requirements.

The Evidence

What the data shows.

Better inspection finds more of the poles that need attention, treatment extends their life, and a front⁠-⁠loaded program keeps the fleet healthier for decades.

Inspection effectiveness

Share of reject poles correctly identified, by inspection method.

Share of reject poles correctly identified, by inspection method.

Inspection method determines what you find.

A visual check finds only 6% of reject poles. Full excavation at the groundline finds nearly all of them.

Source: Nelson Research and Osmose Utilities Services assessment effectiveness study, Rethinking Wood Pole Evaluation (Osmose, 2024).

Share of reject poles correctly identified, by inspection method.
MethodShare identified
Visual6%
Sound8%
Bore17%
Partial excavation (condition-based)73%
Full excavation (PoleCo standard)99%

Pole life extension

Observed

Inspection and remediation extend pole life.

Poles in an inspection and remediation program reach an average life of 73 years, compared with 48 years without one: about 25 years, or roughly 52%, longer. More than twice as many are still standing at 46 to 50 years.

Source: Independent inspection data, n = 550,000 poles.

Average pole life, years
ProgramAverage life (years)
Without inspection and remediation48
With inspection and remediation73

A front⁠-⁠loaded program stops active decay quickly

Illustrative

A front⁠-⁠loaded program stops active decay quickly

Current approach

75%of poles decaying or rejected by Year 50

Rejects grow from about 10% to 25% of the fleet.

PoleCo program

3%of poles decaying or rejected by Year 50

Active decay falls from 48% to under 9% within ten years.

  • Rejects
  • Actively decaying
  • Not actively decaying
  • No decay

Both programs start from the same fleet in Year 1.

Illustrative. Based on a sample program. Source: Osmose estimates.

Current approach vs PoleCo program: share of poles by condition, program Years 1, 10, 25, and 50.
Program yearCurrent approach: rejectsCurrent approach: actively decayingPoleCo program: rejectsPoleCo program: actively decaying
19.9%48.2%9.9%48.2%
1013.4%56.7%2.6%8.7%
2519%54.7%0.5%4.5%
5025.3%49.5%0.3%2.3%