{"id":"culvert-csp","version":"0.4.0","classification":{"uniformat":"G3030"},"names":["Culvert, corrugated steel"],"aliases":["CSP culvert","corrugated steel pipe"],"service_life":{"median_years":35,"range_years":[20,75],"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 steel culvert in permanent standing water (condition 1-2)","frequency":"P2Y","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":22,"checklist":"Table 3.4.2 Level 2 inspection frequencies"},{"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":"accounting","title":"Chapple: Schedule A - By-law 1873: Asset Useful Life - General Guidelines","url":"https://chapple.civicweb.net/document/32784/","page":1,"label":"Culverts - steel","years":40,"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":"Kapuskasing: By-law No. 3103, Tangible Capital Assets Policy","url":"https://kapuskasing.civicweb.net/document/6872/","page":15,"label":"Culverts - Steel","years":25,"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":"Kenora: AF-6-1 Tangible Capital Asset Policy (By-law 34-2026)","url":"https://listview.kenora.ca/Files/City%20Policy%20Manual/Administration%20and%20Finance/AF-6-1%20Tangible%20Capital%20Asset.pdf","page":16,"label":"Storm Sewers - Culvert - STL","years":20,"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 - Corrugated Steel","years":[25,40],"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 - Corrugated Steel","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 - Corrugated Steel","years":40,"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":"Corrugated steel pipe culverts: Replacement","years":35,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["These are Ontario accounting lives from municipal capital asset policies, not planning or 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-csp","versioned_url":"https://unfinished.one/c/culvert-csp/v/0.4.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Culvert, corrugated steel, v0.4.0. https://unfinished.one/c/culvert-csp/v/0.4.0"}