1001 Smart Cities
🇨🇳 Chongqing

River-Crossing Bridge Structural Health Monitoring Network

🤖 AI-generated summary · ◆ 13 sourced claims · 🔎 Last verified

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

13 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.

How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page

Chongqing wired 24 of its 28 Yangtze crossings with 100+ sensors apiece, generating an 'ECG for bridges' — and on two spans, that data alone is now certified to fine overweight trucks without a stop.

Outcome🔄 Ongoing
Evidence🏛️ Official
what does this mean?The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →
Run byChongqing Municipal Public Facilities Center (市市政设施中心)
Scale🏙️ City-wide

Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 5 more in Chongqing · 📡 Sensors & IoT guide · 🚲 Mobility projects

Chongqing's Municipal Public Facilities Center runs a structural-monitoring network on the city's river-crossing bridges in the central urban area. Its own October 2023 account names six municipally managed crossings with the system in place, among them the Dafosi, Masangxi and Gaojiahuayuan bridges; a trade page puts the wider figure at 24 of 28 by the end of that year. The Gaojiahuayuan bridge and its parallel span carry close to a hundred stress, strain, deflection and temperature sensors, and the network is reported to generate 100,000+ data points a day, feeding an 'ECG-like' readout that triggers automatic alerts past preset thresholds; the network is reported to cover roughly 70% of all municipal bridge-and-tunnel facilities citywide. 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. No independent audit of alert accuracy or citation volumes was found; the headline figures come from the operating agency and from a trade page that does not name the outlet it reprints.

Live 📅 since 2023

📊 Impact

the operating centre names six municipally managed river-crossing bridges with a live monitoring system in October 2023, while a trade page gives 24 of 28 by the end of that year (≈70% of all municipal bridge-and-tunnel facilities citywide); close to a hundred sensors on the Gaojiahuayuan bridge and its parallel span, and 100,000+ data points/day across the network; weigh-in-motion subsystems on the Gaojiahuayuan parallel bridge and the Jiayue bridge hold metrology certification for non-stop overweight-vehicle enforcement (operator-reported, no independent audit found).

🎓 Lesson

Structural sensors only earn their keep when they connect to an action — Chongqing's weigh-in-motion data is certified to the precision a citation needs, which is one step past monitoring.

🚲 MobilitySensors & IoTSafety & security

Sources

↗ Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operationsPublished 17 October 2023Six 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.
↗ China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoringPublished 19 July 2024End-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.
Show your work What this page rests on and what it can’t tell you · all 13 claims with their sources · the forensic record

Evidence Passport · public beta 13 addressable claims, 2 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.

Inspect the claims, one by one — verbatim text, sources and caveats for all 13

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-ad8be9de4d727dfd descriptive
Chongqing's Municipal Public Facilities Center runs a structural-monitoring network on the city's river-crossing bridges in the central urban area
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Claim 2 clm-5ffdad1c1d7bab44 quantitative
a trade page puts the wider figure at 24 of 28 by the end of that year
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring
Claim 3 clm-d28c280ce2171576 descriptive
The Gaojiahuayuan bridge and its parallel span carry close to a hundred stress, strain, deflection and temperature sensors
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Claim 4 clm-8a52c4c63f3305e9 quantitative
the network is reported to generate 100,000+ data points a day
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring
Claim 5 clm-aa9a5ffca9479c5e descriptive
feeding an 'ECG-like' readout that triggers automatic alerts past preset thresholds
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Claim 6 clm-8c40db4a524e5b72 quantitative
the network is reported to cover roughly 70% of all municipal bridge-and-tunnel facilities citywide
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring
Claim 7 clm-e239428857a47aa1 descriptive
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
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Claim 8 clm-bdd5b25dafe0bd20 quantitative
a trade page gives 24 of 28 by the end of that year
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
“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.

Sources carrying this claim

  1. China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring
Claim 9 clm-2d60918fd34166e3 quantitative
≈70% of all municipal bridge-and-tunnel facilities citywide
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
“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.

Sources carrying this claim

  1. China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring
Claim 10 clm-8003f5904fae4f78 descriptive
close to a hundred sensors on the Gaojiahuayuan bridge and its parallel span
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
“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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Claim 11 clm-3bb0895cf4b5d160 quantitative
100,000+ data points/day across the network
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
“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
No claim-specific caveat recorded

Sources carrying this claim

  1. China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring
Claim 12 clm-9b9e54f433bc759f descriptive
weigh-in-motion subsystems on the Gaojiahuayuan parallel bridge and the Jiayue bridge hold metrology certification for non-stop overweight-vehicle enforcement
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
“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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Claim 13 clm-5424913cfbdbc7ed descriptive
Chongqing's weigh-in-motion data is certified to the precision a citation needs
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
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.

Sources carrying this claim

  1. Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-08-21-evidence-baseline effective 2026-08-02 · created 2026-08-22

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:90c714c0e0a2d7cf1a71444ef6d6a9efb6a42f5514227bc7e7c99893530fef52
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
13
of 13 claims mapped
2
source dossiers
2
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Chongqing Municipal Public Facilities Center (市市政设施中心)
Actor types
city-government
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

2 source dossiers

Chongqing Daily (via cgj.cq.gov.cn) — Municipal Public Facilities Center: digital empowerment safeguards municipal-facility operations cgj.cq.gov.cn · 7 linked claims

Open original source ↗

Stable source ID
src-651adfb0677047a8
Publisher
Name not classified · cgj.cq.gov.cn
Type / language
web-page · language not classified
Published
2023-10-17
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-02
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

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.

Descriptive only — not page/paragraph exact
Claims linked
China Railway Intercity Planning & Construction Co. — 24 of Chongqing's 28 urban cross-Yangtze bridges have completed structural health monitoring ztcjjt.com · 6 linked claims

Open original source ↗

Stable source ID
src-49a1c1c2385b5f61
Publisher
Name not classified · ztcjjt.com
Type / language
web-page · language not classified
Published
2024-07-19
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-08-02
Dossier created
2026-08-22
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

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.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this passport
  • 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.

Continue exploring

Compare this project

🇨🇳 Wuhan City Safety Risk Monitoring & Early Warning Platform · Wuhan Both monitor bridge structural health with sensors — Chongqing's covers 24 of 28 Yangtze bridges, Wuhan folds bridges into a wider platform. 🇹🇷 Earthquake Early Warning & Seismic Monitoring Network · Istanbul Both are structural-safety sensor networks with automatic alert thresholds — Istanbul reads seismic risk, Chongqing reads bridges. 🇨🇳 Automated Waterlogging Monitoring & Early-Warning System · Tianjin Sibling Chinese sensor network: automated thresholds trigger warnings, though Tianjin watches flooding, not bridge stress.

Explore the wider context

📟 A Reading Is Not a Decision📖 Automated speed enforcement (speed cameras)📖 Flood early-warning system📖 Integrated command and control centre (ICCC)
📎 Cite this project

1001 Smart Cities (2026). “River-Crossing Bridge Structural Health Monitoring Network” — Chongqing, China. The Smart City Atlas. https://1001smartcities.org/projects/chongqing-bridge-health-monitoring/ (last verified 2026-08-02). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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