{ "schemaVersion": "1.0.0", "constitutionVersion": "1.0.0", "createdAt": "2026-08-12T00:00:00Z", "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.", "entity": { "type": "project", "id": "chongqing-bridge-health-monitoring", "title": "River-Crossing Bridge Structural Health Monitoring Network", "canonicalUrl": "https://1001smartcities.org/projects/chongqing-bridge-health-monitoring/" }, "currentRevisionId": "2026-08-21-evidence-baseline", "revisions": [ { "id": "2026-08-21-evidence-baseline", "createdAt": "2026-08-22T09:04:00Z", "effectiveAt": "2026-08-02", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 13 claims and 2 source dossiers.", "preparedBy": { "type": "automation", "label": "AI-assisted evidence preparation", "humanApproved": false }, "review": { "status": "unreviewed", "by": null, "date": null, "note": "Awaiting operator and domain-expert review; publication of this revision implies neither." }, "changes": [ { "operation": "add", "path": "/evidencePassport", "summary": "Added claim-level evidence mapping and source dossiers." }, { "operation": "add", "path": "/revisionHistory", "summary": "Established a permanent, hash-addressed baseline revision." } ], "snapshotHash": "sha256:90c714c0e0a2d7cf1a71444ef6d6a9efb6a42f5514227bc7e7c99893530fef52", "snapshot": { "asOf": "2026-08-02", "projectFingerprint": "sha256:55f5f6ab61b10d1f90233f72f014280e22bd17bf165fa6998c3b968a59881b27", "assurance": { "status": "unreviewed", "scope": "evidence-passport-revision", "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.", "machineChecks": [ "schema", "publication-diff-contract", "material-project-fingerprint", "claim-text-drift", "source-reference-resolution", "complete-source-dossier", "snapshot-hash" ] }, "projectState": { "status": "live", "outcome": "ongoing", "evidenceGrade": "official", "timeline": { "started": 2023, "ended": null } }, "governance": { "operator": "Chongqing Municipal Public Facilities Center (市市政设施中心)", "actorTypes": [ "city-government" ], "fundingModel": "public", "fundingDescription": null, "cost": null, "ownership": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-ad8be9de4d727dfd", "field": "snippet", "text": "Chongqing's Municipal Public Facilities Center runs a structural-monitoring network on the city's river-crossing bridges in the central urban area", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "The Chongqing Daily piece, republished by the municipal urban-management commission that oversees the centre, names the Chongqing Municipal Facilities Operation Support Centre (重庆市市政设施运行保障中心, short form 市市政设施中心) as the body running the bridge monitoring system: “目前，已有大佛寺长江大桥、马桑溪长江大桥、高家花园大桥及复线桥等6座市直管跨江特大桥建成了桥梁结构运营状态监测系统” — as of October 2023 six municipally directly managed cross-river mega-bridges had the system built. The source says 跨江, cross-river, throughout, and never Yangtze.", "caveat": "The centre's own account covers the six crossings the municipality manages directly, not the wider set of central-urban river bridges this passage describes; the remainder are run by district authorities.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-5ffdad1c1d7bab44", "field": "snippet", "text": "a trade page puts the wider figure at 24 of 28 by the end of that year", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-49a1c1c2385b5f61" ], "supportNote": "The page states: “截至2023年年底，中心城区28座城市跨江大桥中24座已完成桥梁结构健康监测系统建设” — by the end of 2023, 24 of the 28 city river-crossing bridges in the central urban area had completed structural health monitoring. The same page names “高家花园大桥、寸滩长江大桥、大佛寺长江大桥” among the monitored crossings, and the Dafosi and Masangxi bridges reappear in its cable-fatigue passage.", "caveat": "The count appears only on an engineering company's news page, which credits its text to the internet without naming the outlet it reprints. The operating centre's own October 2023 account names six municipally managed bridges with the system, so the wider figure takes in crossings other bodies run. The source also describes construction as completed, which it does not separate from bridges already in live use.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-d28c280ce2171576", "field": "snippet", "text": "The Gaojiahuayuan bridge and its parallel span carry close to a hundred stress, strain, deflection and temperature sensors", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "The centre's bridge-maintenance division head is quoted: “桥梁的重要结构节点上安装有上百个传感器，对大桥应力应变、挠度、温度等进行24小时监测” — more than a hundred sensors at the key structural nodes, monitoring stress and strain, deflection and temperature around the clock. The second listed source puts the count slightly lower, at “近百个传感器”, close to a hundred.", "caveat": "The figure is given while describing the Gaojiahuayuan bridge and its parallel span; neither source counts sensors on any other monitored bridge, so the word each rests on a single example.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-8a52c4c63f3305e9", "field": "snippet", "text": "the network is reported to generate 100,000+ data points a day", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-49a1c1c2385b5f61" ], "supportNote": "The page states: “光一座跨江大桥一天产生的数据量就超过10万条” — a single river-crossing bridge alone produces more than 100,000 records a day.", "caveat": "A round number quoted from an unnamed official in a reprinted article; no source breaks it down by sensor type or sampling rate.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-aa9a5ffca9479c5e", "field": "snippet", "text": "feeding an 'ECG-like' readout that triggers automatic alerts past preset thresholds", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "The source uses the electrocardiogram image itself: data reaching the bridge structural operating-state monitoring system “将形成一张张犹如‘心电图’的分析图，直观展现桥梁健康状况”, and the alert rule reads “一旦传感器采集数据超出预设值，传感器就会自动报警” — once collected data exceeds the preset value, an alarm is raised automatically.", "caveat": "What follows the alarm is described as human work: staff are sent to inspect and the data is passed to experts. Neither source reports how often alerts fire or how many prove correct.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-8c40db4a524e5b72", "field": "snippet", "text": "the network is reported to cover roughly 70% of all municipal bridge-and-tunnel facilities citywide", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-49a1c1c2385b5f61" ], "supportNote": "The sentence carrying the 24-of-28 count continues: “全市城市桥隧设施智慧监管覆盖率达70%” — citywide, smart supervision of urban bridge and tunnel facilities reaches 70 per cent coverage.", "caveat": "The source's 70 per cent measures smart supervision of bridge and tunnel assets, a broader category than the structural sensor network described here, and it stands as a separate figure rather than the same ratio expressed differently.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-e239428857a47aa1", "field": "snippet", "text": "On the Gaojiahuayuan parallel bridge and the Jiayue bridge, a linked weigh-in-motion subsystem has been certified to the precision that off-site enforcement against overweight trucks requires", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "The source states: “目前高家花园复线桥、嘉悦大桥过桥车辆称重子系统已达到非现场执法的精度要求，称重数据取得了计量认证” — the vehicle-weighing subsystems on the Gaojiahuayuan parallel bridge and the Jiayue bridge meet the accuracy requirement for off-site enforcement, and their weighing data has obtained metrology certification.", "caveat": "Both of these crossings span the Jialing river rather than the Yangtze. The source names no certifying body, certification date or accuracy class.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-bdd5b25dafe0bd20", "field": "impact", "text": "a trade page gives 24 of 28 by the end of that year", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-49a1c1c2385b5f61" ], "supportNote": "“截至2023年年底，中心城区28座城市跨江大桥中24座已完成桥梁结构健康监测系统建设” — by the end of 2023, 24 of the 28 city river-crossing bridges in the central urban area had completed construction of structural health monitoring.", "caveat": "The source counts river crossings, not Yangtze crossings: Chongqing's central urban area sits at the confluence of the Yangtze and the Jialing, and this same page places the Gaojiahuayuan bridge on the Jialing during a flood crest.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-2d60918fd34166e3", "field": "impact", "text": "≈70% of all municipal bridge-and-tunnel facilities citywide", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-49a1c1c2385b5f61" ], "supportNote": "“全市城市桥隧设施智慧监管覆盖率达70%” — citywide smart-supervision coverage of urban bridge and tunnel facilities reaches 70 per cent.", "caveat": "The 70 per cent is a second, separate figure in the source. It covers smart supervision of bridges and tunnels across the municipality; it is not the share that 24 of 28 bridges represents, and it is not confined to structural sensors.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-8003f5904fae4f78", "field": "impact", "text": "close to a hundred sensors on the Gaojiahuayuan bridge and its parallel span", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "“桥梁的重要结构节点上安装有上百个传感器” — more than a hundred sensors are installed at the bridge's key structural nodes. The second listed source gives “近百个传感器”, close to a hundred, which falls just short of the figure stated here.", "caveat": "The two listed sources disagree over which side of one hundred the count falls on, and neither gives a sensor count for any bridge other than the Gaojiahuayuan crossing.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-3bb0895cf4b5d160", "field": "impact", "text": "100,000+ data points/day across the network", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-49a1c1c2385b5f61" ], "supportNote": "“光一座跨江大桥一天产生的数据量就超过10万条” — a single river-crossing bridge alone generates more than 100,000 data records in a day.", "caveat": null, "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-9b9e54f433bc759f", "field": "impact", "text": "weigh-in-motion subsystems on the Gaojiahuayuan parallel bridge and the Jiayue bridge hold metrology certification for non-stop overweight-vehicle enforcement", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "“目前高家花园复线桥、嘉悦大桥过桥车辆称重子系统已达到非现场执法的精度要求，称重数据取得了计量认证，可直接用于交警非现场执法使用” — the two bridges' vehicle-weighing subsystems meet the accuracy requirement for off-site enforcement, their weighing data holds metrology certification, and it can be used directly by traffic police without stopping the vehicle.", "caveat": "Certification establishes that the data may be used for enforcement. The source does not say enforcement has begun, and neither source reports citations issued or a resulting change in overweight crossings.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-5424913cfbdbc7ed", "field": "lesson", "text": "Chongqing's weigh-in-motion data is certified to the precision a citation needs", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-651adfb0677047a8" ], "supportNote": "The source states that the certified weighing data on the two bridges “可直接用于交警非现场执法使用”, can be used directly by traffic police for off-site enforcement, and quotes the maintenance official saying that dynamic weighing “辅以交通执法，将有效的减少超重车辆过桥情况” — combined with traffic enforcement, it will effectively reduce overweight crossings.", "caveat": "The source describes a qualification and an expectation, both in forward-looking language. It does not report that citations are being issued from this data, so the link from sensor to penalty stands as a permission on the record rather than a documented practice.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } } ], "sources": [ { "id": "src-651adfb0677047a8", "title": "Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations", "url": "https://cgj.cq.gov.cn/zwxx_173/bmdt/mtkd/202310/t20231017_12435741.html", "publisher": { "name": null, "domain": "cgj.cq.gov.cn", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-ad8be9de4d727dfd", "clm-d28c280ce2171576", "clm-aa9a5ffca9479c5e", "clm-e239428857a47aa1", "clm-8003f5904fae4f78", "clm-9b9e54f433bc759f", "clm-5424913cfbdbc7ed" ], "temporal": { "publishedAt": "2023-10-17", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-08-02", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Six municipal-direct-managed bridges named (Dafosi, Masangxi, Gaojiahuayuan + parallel bridge), 100+ sensors/bridge, weigh-in-motion metrology certification on Gaojiahuayuan parallel bridge and Jiayue bridge for non-site enforcement.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-49a1c1c2385b5f61", "title": "China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring", "url": "https://www.ztcjjt.com/a/xwzx/hyzx/20240719/7563.html", "publisher": { "name": null, "domain": "ztcjjt.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-5ffdad1c1d7bab44", "clm-8a52c4c63f3305e9", "clm-8c40db4a524e5b72", "clm-bdd5b25dafe0bd20", "clm-2d60918fd34166e3", "clm-3bb0895cf4b5d160" ], "temporal": { "publishedAt": "2024-07-19", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-08-02", "dossierCreatedAt": "2026-08-22", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "End-of-2023 figure: 24 of 28 central-urban cross-Yangtze bridges monitored; 100,000+ data points/bridge/day; ~70% of municipal bridge-and-tunnel facilities citywide under intelligent monitoring; July 2024 flood-crest use case on the Gaojiahuayuan bridge.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 13, "claimsMapped": 13, "sourcesTotal": 2, "sourcesUsedByClaims": 2, "sourcesWithPublicationDate": 2, "sourcesWithArchive": 0, "sourcesWithExactLocator": 0, "sourcesWithContentHash": 0 }, "limits": [ "Publisher names and source languages have not yet been classified; domains are recorded without guessing.", "Existing source notes are descriptive locators, not page- or paragraph-exact citations.", "A missing archive, publication date or content hash is shown as null rather than inferred.", "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim." ] } } ] }