{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T04:35:51Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude", "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-05T15:00:00Z", "ingestedAt": "2026-10-05T13:11:18+00:00", "fields": [ "agent_conduct", "ethics", "owners" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-06T19:51:53+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q12280", "registryId": "vr.tr.bridge", "name": "bridge", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.BLT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q12280/", "model": { "registry_id": "vr.tr.bridge", "name": "bridge", "purpose": "Let an agent treat a bridge as infrastructure with a structural type, a load rating, an owner, an inspection regime and restrictions of use.", "definition": "A structure that carries a road, railway, path, pipe or animal crossing over an obstacle such as water, a valley or another route, while leaving the space beneath open.", "what_it_is_for": "Crossing obstacles without blocking what lies beneath.", "affordances": [ "cross it, subject to weight, height and width limits", "inspect it, on a regular cycle", "rate it, for load capacity and condition", "close, repair or replace it" ], "distinguishing_features": [ "Leaves the space beneath open, unlike a causeway or embankment", "Classified by structural form and by what it carries", "Has a load rating and inspection history", "Wildlife crossings and pipe bridges are bridges too" ], "appearance": "A deck supported by piers, arches, cables or trusses spanning a gap; ranges from a timber footbridge to a multi-kilometre cable-stayed crossing.", "visual_identification": [ "A deck spanning a gap with supports at its ends and often in between", "Structural form visible as arch, beam, truss, suspension or cable-stayed", "Signs showing weight, height or width limits" ], "physical_properties": [ { "quantity": "span", "typical_range": "2-2000", "unit": "m", "note": "longest suspension spans approach 2 km" }, { "quantity": "design life", "typical_range": "50-120", "unit": "years", "note": "" }, { "quantity": "load rating", "typical_range": "varies", "unit": "tonnes or load model", "note": "set by national codes" } ], "families_and_kinds": [ "by form: beam, arch, truss, cantilever, suspension, cable-stayed", "by use: road, rail, foot, pipe, aqueduct, wildlife crossing", "by material: stone, timber, steel, concrete, composite", "by movement: fixed, bascule, swing, lift" ], "related_models": [ { "relation": "is part of", "target": "road and railway", "why": "bridges are links in networks" }, { "relation": "is a kind of", "target": "structure", "why": "inherits structural design and inspection" }, { "relation": "is inspected by", "target": "bridge inspection regime", "why": "condition ratings drive restrictions" }, { "relation": "is confused with", "target": "bridge as a card game or network device", "why": "homonyms; this entry is the structure" } ], "identifiers": [ { "scheme": "national bridge inventory number", "value_or_pattern": "country-specific", "note": "for example the US National Bridge Inventory structure number" } ], "standards_and_regulation": [ "Eurocodes EN 1990-1999 and national annexes", "AASHTO LRFD bridge design specifications", "National bridge inspection standards" ], "failure_modes_and_hazards": [ "Collapse from overloading, scour, fatigue or corrosion", "Strikes by over-height vehicles or ships", "Scour of foundations in floods", "Deferred maintenance that lowers the load rating" ], "in_scope": [], "out_of_scope": [], "characteristics": [], "agent_conduct": { "may": [ "Cross a bridge within its posted weight, height and width limits.", "Report damage, scour, impacts and closures to the bridge owner." ], "must_not": [ "Cross or route vehicles over a bridge beyond its limits.", "Damage or interfere with a bridge's structure or protection.", "Declare a bridge safe after an impact or flood without an inspection by its owner.", "Help in attacking or sabotaging a bridge." ], "requires_human": [ "Closing or reopening a bridge.", "Changing its load rating or restrictions." ] }, "ethics": { "considerations": [ "Bridge failures kill many people at once; maintenance is a public duty.", "Bridges connect communities; closures cut people off from services." ], "affected_parties": [ "People crossing it", "People below it", "Communities it connects" ] }, "owners": { "steward": "The bridge owner, usually the road, rail or waterway authority.", "master_systems": [ "Bridge inventories of the infrastructure owner" ] } }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q12280: bridge", "url": "https://www.wikidata.org/wiki/Q12280", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Bridge", "url": "https://en.wikipedia.org/wiki/Bridge", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "structure", "name": "Structure", "description": "Form, span and materials.", "rationale": "Structural form determines behaviour, inspection and failure modes.", "layers": [ { "id": "form", "name": "Structural form", "description": "Beam, arch, truss or cable.", "findings": [ { "id": "form-finding", "name": "Structural type", "description": "The structural form and spans.", "questions": [ { "text": "What is the structural form, and what are its spans?", "kind": "definition" }, { "text": "What materials make up the main elements?", "kind": "definition" } ] } ] }, { "id": "design", "name": "Design basis", "description": "Code and load model.", "findings": [ { "id": "design-finding", "name": "Design standard", "description": "The code and loads it was designed for.", "questions": [ { "text": "To which code and load model was it designed, and when?", "kind": "provenance" }, { "text": "Has it been strengthened since?", "kind": "provenance" } ] } ] } ] }, { "id": "capacity-and-restrictions", "name": "Capacity and restrictions", "description": "What may cross.", "rationale": "Restrictions are what users and routing systems must know.", "layers": [ { "id": "rating", "name": "Load rating", "description": "Assessed capacity.", "findings": [ { "id": "rating-finding", "name": "Assessed capacity", "description": "The current load rating.", "questions": [ { "text": "What is the current load rating?", "kind": "measurement" }, { "text": "When was it last assessed?", "kind": "provenance" } ] } ] }, { "id": "limits", "name": "Limits of use", "description": "Weight, height, width and speed.", "findings": [ { "id": "limits-finding", "name": "Posted limits", "description": "The limits posted and enforced.", "questions": [ { "text": "Which weight, height or width limits apply?", "kind": "boundary" }, { "text": "How are they enforced?", "kind": "action" } ] } ] } ] }, { "id": "inspection-and-condition", "name": "Inspection and condition", "description": "State of the structure.", "rationale": "Inspection is the main defence against failure.", "layers": [ { "id": "inspection", "name": "Inspection", "description": "Cycle and findings.", "findings": [ { "id": "inspection-finding", "name": "Inspection record", "description": "Latest inspection and rating.", "questions": [ { "text": "When was it last inspected, and what condition rating was given?", "kind": "measurement" }, { "text": "What defects were found?", "kind": "measurement" } ] } ] }, { "id": "scour", "name": "Foundations and scour", "description": "Risk to supports.", "findings": [ { "id": "scour-finding", "name": "Scour assessment", "description": "The scour risk and monitoring.", "questions": [ { "text": "Is the bridge at risk from scour, and is it monitored?", "kind": "boundary" }, { "text": "What happens in a flood warning?", "kind": "action" } ] } ] } ] }, { "id": "ownership-and-status", "name": "Ownership and status", "description": "Who is responsible.", "rationale": "Ownership decides who inspects, repairs and answers for the bridge.", "layers": [ { "id": "owner", "name": "Owner", "description": "Responsible authority.", "findings": [ { "id": "owner-finding", "name": "Owner and operator", "description": "The owner and operator.", "questions": [ { "text": "Who owns and maintains this bridge?", "kind": "provenance" }, { "text": "How are defects reported?", "kind": "action" } ] } ] }, { "id": "status", "name": "Status", "description": "Open, restricted, closed, heritage.", "findings": [ { "id": "status-finding", "name": "Current status", "description": "Operational and heritage status.", "questions": [ { "text": "Is the bridge open, restricted or closed now?", "kind": "boundary" }, { "text": "Is it a protected heritage structure?", "kind": "definition" } ] } ] } ] } ] }, "openQuestions": [ "Should named bridges be registered as instances with inventory numbers?", "How should load restrictions be represented for routing agents?", "How should heritage status interact with safety restrictions?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }