Bridge Inspection Survey
Viaduct Survey | Complete 3D Data for Structural Assessment
Overview
LandScope delivered a detailed viaduct survey at Gilwern Viaduct in South Wales. The structure required assessment due to its age. In addition, a full topographical survey of the area below was needed to support maintenance works.
The goal was to capture a complete and accurate dataset for engineering and construction teams.
The Challenge
Surveying a large viaduct creates several challenges.
Firstly, the structure includes multiple spans that require high levels of detail.
In addition, dense vegetation and tree cover restrict visibility.
Netting across sections of the structure further limits access.
Below the viaduct, a river and other obstructions increase complexity.
As a result, a carefully planned survey approach was essential.
The Solution
To deliver a high-quality viaduct survey, LandScope used high-accuracy terrestrial laser scanning with supporting imagery.
A precise survey control framework ensured all scans aligned correctly. In addition, multiple scan positions increased coverage and reduced shadowing.
The team coordinated closely with rope access specialists. This allowed sections of netting to be removed at the right time. As a result, critical areas of the structure were captured safely and accurately.
Furthermore, each scan followed a structured workflow. This ensured the dataset remained consistent, controlled and suitable for engineering use.
Key Benefits
- High-resolution data across a complex structure
- Full coverage of obstructed areas
- Reduced risk through careful planning
- Accurate data for structural assessment
- Efficient delivery within a short programme
Deliverables
- Colourised point cloud data
- 3D CAD drawings for engineering use
The Outcome
The team completed the viaduct survey aligned to a tight programme.
As a result, the client received a complete and reliable dataset of the structure and surrounding area. In addition, the data supports future works without the need for repeat visits.
Conclusion
A high-quality viaduct survey requires more than data capture.
It requires planning, control and the correct application of geospatial principles. Therefore, by combining expertise with the right technology, LandScope delivered a dataset that engineers can rely on.
