Analysis of visual inspection data for a sample of highway bridges in the UK

Bennetts, John; Vardanega, Paul J.; Webb, Graham T; Denton, Steve R; Loudon, Neil

doi:10.1680/jfoen.21.00005

Cited by 2 publications

(1 citation statement)

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“…The current industry standard for visual bridge inspection in the UK involves a cycle of routine inspections, comprising of General Inspections (GIs) and Principal Inspections (PIs) (see HE 2021). Bennetts et al (2018a), Bennetts et al (2018b), Bennetts (2019), Bennetts et al (2022) present recent work on the use of visual inspection data to study trends at stock/regional level. The work in this paper primarily focuses on implications for the General Inspection procedure.…”

Section: The Visual Inspection Of Bridgesmentioning

confidence: 99%

Viability of bridge inspectors determining defect ratings using photographic images

Nepomuceno

Vardanega

Pregnolato

et al. 2023

Infrastructure Asset Management

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The visual inspection of bridges is a major undertaking for asset owners and operators. In the UK, visual inspections require inspectors to visit bridges on-site and often at night and in unfavourable weather conditions. Therefore, it would be beneficial to move some of the visual inspection process off-site. This paper studies whether the defect classification aspects of the inspection process could be conducted remotely using photographs. This study examines the defect ratings assigned by ten survey participants who were tasked with examining photographs from visual inspections of ten UK bridges. The survey results were compared with the results from the general inspections previously carried out for the bridges in question. From this dataset, the differences in the ratings given and the extent to which defects are missed were examined. The results show that a higher number of defects were identified for a given bridge by the remote inspectors. Statistical analysis shows that aggregated defects rated by off-site inspectors tend to be more severe and of a higher priority rating compared to those from the on site inspectors. The results also indicate that there is closer agreement between on-site and off-site inspectors for defects of a higher severity rating.

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Section: The Visual Inspection Of Bridgesmentioning

confidence: 99%