CROSS Safety Report
Corrosion of main girder beam on bridge supporting rail lines
A hole was found in the central main girder on a bridge supporting rail line during inspection works.
Key Learning Outcomes
For asset owners and managers:
- Regular inspections and maintenance can help keep a structure safe before it deteriorates and requires costly repairs
- Be aware that safety critical defects may be hidden behind linings and connection plates
- The risks posed by hidden defects should be managed appropriately. Hidden Critical Element (HCE) inspections should be carried out by suitably qualified and experienced personnel.
- Further guidance can be found in CIRIA document: Hidden defects in bridges. Guidance for detection and maintenance (C764)
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An examiner undertaking a Hidden Critical Elements (HCEs) inspection reported finding a hole in the central main girder on a bridge supporting rail lines. An emergency speed restriction was applied pending repairs. The structure had a previous HCEs inspection four years before, but the ballast plates were not fully removed during the inspection.
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