{"id":"culvert-concrete","version":"0.6.0","classification":{"uniformat":"G3030"},"names":["Culvert, concrete"],"aliases":["concrete box culvert","concrete pipe culvert"],"service_life":{"median_years":75,"range_years":[50,75],"range_basis":"source_spread"},"pm_tasks":[{"task":"Level 1 routine maintenance inspection of culvert (condition 1-3)","frequency":"P1Y","reference":"Structures Inspection Manual, Part 3: Structures Inspection Procedures","url":"https://www.tmr.qld.gov.au/-/media/busind/techstdpubs/Bridges-marine-and-other-structures/Structures-Inspection-Manual/SIM-Part3.pdf?la=en","page":8,"checklist":"Table 2.4 Level 1 inspection frequencies (Bridges and culverts)"},{"task":"Level 2 condition inspection of culvert (condition 1-2)","frequency":"P5Y","reference":"Structures Inspection Manual, Part 3: Structures Inspection Procedures","url":"https://www.tmr.qld.gov.au/-/media/busind/techstdpubs/Bridges-marine-and-other-structures/Structures-Inspection-Manual/SIM-Part3.pdf?la=en","page":23,"checklist":"Table 3.4.2 Level 2 inspection frequencies"},{"task":"Level 2 condition inspection of culvert (condition 3)","frequency":"P3Y","reference":"Structures Inspection Manual, Part 3: Structures Inspection Procedures","url":"https://www.tmr.qld.gov.au/-/media/busind/techstdpubs/Bridges-marine-and-other-structures/Structures-Inspection-Manual/SIM-Part3.pdf?la=en","page":23,"checklist":"Table 3.4.2 Level 2 inspection frequencies"}],"basis":[{"type":"public_document","life_type":"planning","title":"Barrie: City of Barrie Corporate Asset Management Plan: Proposed Levels of Service","url":"https://www.barrie.ca/Corporate-Asset-Management-Plan.pdf","page":127,"label":"Culverts (Concrete)","years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Kapuskasing: By-law No. 3103, Tangible Capital Assets Policy","url":"https://kapuskasing.civicweb.net/document/6872/","page":15,"label":"Culverts - Concrete","years":70,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Meaford: By-law 2020-83, Tangible Capital Asset Policy, Appendix A Estimated Useful Lives","url":"https://meaford.civicweb.net/document/103944/","page":19,"label":"Linear - Culverts - Concrete","years":75,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Simcoe: County of Simcoe 2025 Asset Management Plan","url":"https://simcoe.ca/wp-content/uploads/2025/06/2025-Asset-Management-Plan.pdf","page":68,"label":"Culverts - Concrete","years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"The Blue Mountains: POL.COR.19.04 Tangible Capital Assets Policy","url":"https://www.thebluemountains.ca/sites/default/files/2022-01/POL-COR-19-04-Tangible-Capital-Assets-Policy.pdf","page":12,"label":"Linear - Culverts - Concrete","years":75,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"York: The Regional Municipality of York 2024 Corporate Asset Management Plan","url":"https://www.york.ca/media/119076","page":53,"label":"Concrete culverts: Replacement","years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"General depreciation rates (IR265), July 2021","by":"Inland Revenue (Te Tari Taake), New Zealand","url":"https://www.ird.govt.nz/-/media/project/ir/home/documents/forms-and-guides/ir200---ir299/ir265/ir265-2021.pdf","page":52,"code":"RETC","label":"Culverts (concrete)","years":50,"note":"Printed page 52. Reticulation systems category (excluding electrical, communications and gas). Printed DV 4%, SL 3%. Tax depreciation lives set by the Commissioner of Inland Revenue for New Zealand income tax, not engineering or asset-management lives; they are banded and often short (e.g. reticulation piping 25 years). The July 2021 edition was the newest PDF reachable; the online Depreciation Rate Finder may hold later determinations."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["Every source here is a published planning, design or accounting life. None is observed replacement data.","Written for Queensland state-controlled road structures in a subtropical climate; TMR's web page says a later update changed inspection scope and frequency, so check the current edition."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/culvert-concrete","versioned_url":"https://unfinished.one/c/culvert-concrete/v/0.6.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Culvert, concrete, v0.6.0. https://unfinished.one/c/culvert-concrete/v/0.6.0"}