Real behaviour, measured
Deflection and strain under known load replace assumptions with facts.
Structural Testing
Bridge Load Test
Controlled loading of bridge spans to verify actual load-carrying behaviour against design expectations.
Overview
In a bridge load test the span is loaded in a controlled way while deflection, strain and other responses are measured. The results show how the structure really performs and support decisions on load rating, rehabilitation or continued service.
A load test applies a known load to a bridge and measures how it responds. The result shows real stiffness and load-carrying behaviour, which is often the most reliable way to confirm a new bridge, or to justify keeping an older one in service.
- Controlled static or dynamic loading of the span
- Deflection and strain response measured
- Measured behaviour compared with predicted behaviour
- Report supporting load-capacity assessment
Key Benefits
Supports acceptance and reuse
Evidence for opening new bridges or retaining ageing ones without unnecessary strengthening.
Calibrates analysis models
Measured response helps refine structural models for future assessment.
Controlled and safe
Loading is applied in stages with monitoring and defined stop criteria.
Where It Is Used
- New bridges before opening
- Bridges after rehabilitation or repair
- Ageing bridges with uncertain capacity
- Bridges carrying heavier loads than designed
How We Work
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1
Plan the test
Define load positions, load levels, instrumentation and acceptance criteria.
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2
Instrument the span
Fit deflection, strain and temperature sensors at the critical sections.
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3
Load in stages
Apply, hold and remove load in steps while recording the response.
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4
Evaluate and report
Compare measured with predicted behaviour and issue the test report.
What You Receive
- Load-test procedure
- Recorded deflection and strain data
- Comparison with predicted behaviour
- Test report with conclusions
Key Projects
Frequently Asked Questions
Does a load test damage the bridge?
No. Loads are increased in stages within agreed limits and stopped if response deviates from expectations.
Is the bridge closed during the test?
Usually the bridge or the tested span is closed to normal traffic for the duration of the test.
Have an infrastructure testing or monitoring requirement?
Tell us about your project — our engineering team will follow up on scope, instrumentation and approach.