How often should your assets be inspected? Enter the asset type, age, operating environment and criticality, and this free tool suggests an indicative inspection interval aligned with common Australian asset management practice.
Inspection frequency depends on asset type, age, environmental exposure and the consequence of failure. As a rule of thumb, bridges receive a routine visual inspection every 12–24 months and a detailed condition inspection every 3–5 years; commercial roofs are commonly inspected annually and after major storm events; water and wastewater assets are inspected on risk-based cycles; and coastal or corrosive environments shorten every interval. High-criticality assets — where failure endangers the public or interrupts essential services — justify the shortest intervals.
Modern asset management has moved from fixed calendars to risk-based inspection (RBI) programs that weight likelihood of deterioration against consequence of failure. A risk-based inspection program concentrates effort on ageing, exposed, high-consequence assets while safely extending intervals on newer low-risk stock — making the best use of inspection resources without increasing risk. Drone inspections make short-interval monitoring affordable for assets that previously required scaffolding, elevated work platforms or road closures.
State road authorities typically require a Level 1 routine visual inspection every 6–24 months and a Level 2 detailed condition inspection every 2–5 years, with Level 3 structural investigations as required. Exact intervals depend on the authority, bridge type, age and condition.
Annual roof inspections are common practice, with additional inspections after severe weather (hail, storms, high wind). Older roofs, coastal locations and roofs with known defects warrant six-monthly inspections.
Asset age, coastal/corrosive/UV-intense environments, heavy usage, previous defects, and high consequence of failure (public safety, essential services, environmental harm) all justify more frequent inspections.
Our team delivers standards-aligned condition assessments, drone inspections and NDT across Australia.