Condition is not the same as age
An older asset may perform well while a newer one deteriorates quickly because of environment, loading, materials or workmanship.
Scales need definitions
A five-point condition scale is only useful if each grade has documented criteria and assessors apply it consistently.
Evidence has different confidence
Visual observations, measurements, testing records and operating history do not all provide the same certainty.
Trend can matter more than one score
Repeated observations can reveal whether deterioration is stable, gradual or accelerating.
Scope. This page explains asset-management concepts, not operating procedures for critical infrastructure. Inspection methods, intervention thresholds and safety decisions must follow the asset owner’s standards, local rules and qualified professional judgement.