CoatingPassport · schema v1.1Demo · Bridge section

DEMO-BRIDGE-SECTION-S3 — Coating Passport

Drone-based hovedinspeksjon per Håndbok V441 of a 110 m steel-concrete composite span (built 1986). Underside box-girder section loss at 24% drives engineering critical assessment; 2.1 mm concrete deck crack exceeds NS-EN 1992-1 immediate-review threshold. Public-infrastructure asset class with full EU AI Act-class tagging.

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Asset

Asset ID
DEMO-BRIDGE-SECTION-S3
Type
Bridge section
Material
mixed
Operator
Demo veivesen
Inspection cycle
Annual hovedinspeksjon

Inspection

Timestamp
Fri, 08 May 2026 08:00:00 GMT
Footage source
drone
Duration
120 min
Frames analyzed
216,000
Operator tier
enterprise_user
Model version
hullproof-vlm-v2.1.3

Findings summary (4)

0
critical
2
severe
2
moderate
0
minor

Findings detail

corrosion

confidence 92%412 framesimg-quality 86%severe

Section loss estimated 24% on primary box-girder web plating below drainage outlet. NCHRP Report 833 CS-3 (severe), approaching CS-4 (load-posting trigger).

Location: Underside of box girder, midspan, drainage outlet (65, -2, -4)
Recommended action: Engineering critical assessment for load capacity. Plan composite-FRP wrap reinforcement; redirect drainage to prevent further damage.

crack

confidence 87%67 framesimg-quality 82%severe

Concrete crack 2.1 mm width at expansion joint approach. Above NS-EN 1992-1 immediate-review threshold; chloride ingress risk in marine environment.

Location: Concrete deck top, expansion joint approach slab (32, 0, -2)
Recommended action: Crack injection within 30 days; replace expansion joint seal; revise inspection cycle to 6-monthly until stabilized.

delamination

confidence 83%198 framesimg-quality 79%moderate

Concrete delamination 3.4 m² on south pier cap face. Audible by ROV-impact-thump; consistent with corroding rebar.

Location: Pier cap concrete, south face (55, 2, -1)
Recommended action: Patch repair scoping per NS-EN 1504; investigate rebar condition with cover-meter survey.

coating breakdown

confidence 81%247 framesimg-quality 77%moderate

Coating system breakdown estimated 18% across box-girder external surfaces. Beyond touch-up threshold; approaching full repaint scoping per NS-EN ISO 12944.

Location: Steel box-girder external surfaces, full span (0, 0, 0)
Recommended action: Plan full repaint within 2 inspection cycles. Coordinate with structural-repair campaign for cost efficiency.

Compliance

EU AI Act class
high_risk_ai_system
Review workflow
Pending

Applicable standards

  • • AASHTO Bridge Inspector's Reference Manual (BIRM)
  • • AASHTO Manual for Bridge Element Inspection
  • • NCHRP Report 833 (Element Condition State 1-4)
  • • Eurocode EN 1993 (Steel structures)
  • • Eurocode EN 1992 (Concrete structures)
  • • Statens vegvesen Håndbok V441 (Bru-inspeksjon)
  • • ISO 16311 (Maintenance and repair of concrete structures)
  • • ASTM E2270 (Steel bridge inspection)

Interoperability

Cognite CDF compatible
Yes
OSDU mapping
—
Veracity export
Not exported
Knowledge graph
Not generated

The same JSON powers Cognite CDF Asset+Timeseries, OSDU exports, RDF knowledge graphs, and MCP-tool calls from agentic systems. PDF is a renderer of this; never the source.

Demo passport generated from fixtures/passports/demo-bridge-section-001.ts. Production passports are built by the analysis pipeline via buildCoatingPassport() and validated against the Zod schema at src/lib/passport/types.ts.