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Tackling Sand Dunes on Saudi Roads and Railways
Sand dunes are a constant challenge for transport infrastructure in Saudi Arabia, covering almost a third of the country’s land area. These shifting formations disrupt mobility, increase maintenance costs, and impact both safety and economic activity.
Commissioned by the Ministry of Transportation, K&A carried out a pioneering study to assess and mitigate sand dune impacts across the Kingdom’s highways and railways. The scope, linked to our expertise in feasibility studies, included surveying more than 6,000 kilometers of roads.
Understanding the Scale of the Challenge
The vast extent of Saudi Arabia’s desert terrain made this study one of the most comprehensive assessments of its kind. Roads and rail lines crossing sand-prone areas required detailed analysis to anticipate risks and plan sustainable solutions.
Scientific and Engineering Solutions
K&A applied advanced methods to understand and mitigate sand dune movement:
- Field surveys along 6,000 km of road corridors with extensive sampling
- Wind and weather modeling, supported by Computational Fluid Dynamics (CFD)
- Geotechnical stability analysis and simulations of dune behavior
- Recommendations for sand stabilization tailored to dune size and type
- Enhanced cross-section designs for roads and railways
- Development of a GIS database to monitor and manage sand hazards long-term
Building Safer and More Resilient Networks
The Saudi Sand Dune Mitigation project delivered clear outcomes:
- Critical sand-prone areas were identified across the transport network
- CFD modeling and geotechnical studies provided new insights into dune dynamics
- Practical remedial measures were proposed to reduce sand encroachment
- A national GIS database was created as a lasting tool for monitoring and planning
- Safety and efficiency of transport corridors were improved, reducing long-term maintenance costs and economic disruption
This landmark study sets the foundation for safer, more resilient road and rail infrastructure in Saudi Arabia, where sand will always be present but no longer uncontrolled.
