Asset condition
Harbor bridge
Through truss · 90 m span · Scenario 001
Monitoring locations20sensors
4 piles · 5 exposure levels
Inspection priority00sites
6 on watch · 7.6% average loss
Highest local loss13.9%
Relative to each original wall
Earliest action threshold7.1 years
S08 · Est. 11 Feb 2033
Generated readings · Summary and priority use fixed-sensor estimates. Illustrative status policy. Compare with published field data →
Simulation year20/ 50
Year 01020304050
Bridge schematic
Through truss · 90 m span · 4 tubular piles
Selected sensor
S08/ Pile 02Watch
Low-water zone · Simulated readings
Remaining wall10.45mm
12.0 mm original
Wall loss12.9%
1.55 mm lost
Recent corrosion rate0.119mm/year
0.99% of original / year
Estimated time to threshold7.1 years
Est. 11 Feb 2033
Illustrative action threshold 20% loss / 9.60 mmLatest fixed-sensor reading 10.36 mm · 01 Jan 2026 · 0.0 years old
Fixed sensors · monthlyDiver readings · every 2 years5-year fitProjection
Wall thickness (mm) · truncated axisProjection shown to year 50
Years since commissioning
61 readings in the latest 5-year fit. Current wall is the fitted estimate at the observation date.Baseline: 0.075 mm/year [1]
Rate change detected. Recent loss is faster than the preceding five-year trend.
Fixed sensors: 0.119 mm/year · Diver readings: 0.138 mm/year. Both sample the same simulated deterioration.
Projections assume the recent rate continues. No structural capacity or safety assessment is implied.
Inspection priority
Fixed-sensor basis · earliest illustrative threshold first
20 sensors
| Rank | Sensor / location | Status | Wall (mm) | Loss (%) | Rate (mm/year) | Years to threshold | Estimated crossing |
|---|---|---|---|---|---|---|---|
| 1 | Pile 2 · Low-water zone | Watch | 10.45 | 12.9 | 0.119 | 7.1 | Est. 11 Feb 2033 |
| 2 | Pile 3 · Low-water zone | Watch | 10.33 | 13.9 | 0.084 | 8.7 | Est. 15 Sept 2034 |
| 3 | Pile 1 · Splash zone | Watch | 10.41 | 13.2 | 0.080 | 10.1 | Est. 18 Feb 2036 |
| 4 | Pile 2 · Splash zone | Watch | 10.55 | 12.1 | 0.072 | 13.1 | Est. 23 Jan 2039 |
| 5 | Pile 1 · Low-water zone | Watch | 10.54 | 12.2 | 0.071 | 13.2 | Est. 11 Mar 2039 |
| 6 | Pile 3 · Splash zone | Watch | 10.57 | 11.9 | 0.070 | 13.8 | Est. 07 Oct 2039 |
| 7 | Pile 4 · Splash zone | Routine | 18.28 | 8.6 | 0.089 | 25.6 | Est. 21 Aug 2051 |
| 8 | Pile 4 · Low-water zone | Routine | 18.66 | 6.7 | 0.065 | Beyond year 50 | Outside the visible horizon |
| 9 | Pile 1 · Tidal zone | Routine | 11.25 | 6.3 | 0.039 | Beyond year 50 | Outside the visible horizon |
| 10 | Pile 3 · Immersed · lower | Routine | 11.33 | 5.6 | 0.034 | Beyond year 50 | Outside the visible horizon |
| 11 | Pile 2 · Tidal zone | Routine | 11.29 | 5.9 | 0.033 | Beyond year 50 | Outside the visible horizon |
| 12 | Pile 3 · Immersed · upper | Routine | 11.32 | 5.7 | 0.033 | Beyond year 50 | Outside the visible horizon |
| 13 | Pile 2 · Immersed · lower | Routine | 11.34 | 5.5 | 0.032 | Beyond year 50 | Outside the visible horizon |
| 14 | Pile 2 · Immersed · upper | Routine | 11.38 | 5.2 | 0.032 | Beyond year 50 | Outside the visible horizon |
| 15 | Pile 1 · Immersed · lower | Routine | 11.38 | 5.1 | 0.032 | Beyond year 50 | Outside the visible horizon |
| 16 | Pile 3 · Tidal zone | Routine | 11.40 | 5.0 | 0.032 | Beyond year 50 | Outside the visible horizon |
| 17 | Pile 1 · Immersed · upper | Routine | 11.39 | 5.1 | 0.029 | Beyond year 50 | Outside the visible horizon |
| 18 | Pile 4 · Immersed · upper | Routine | 19.21 | 3.9 | 0.040 | Beyond year 50 | Outside the visible horizon |
| 19 | Pile 4 · Tidal zone | Routine | 19.21 | 4.0 | 0.039 | Beyond year 50 | Outside the visible horizon |
| 20 | Pile 4 · Immersed · lower | Routine | 19.37 | 3.1 | 0.032 | Beyond year 50 | Outside the visible horizon |