22 Hrs
Source:
المدينة
Highways Authority Details Road Layers in Kingdom
The General Roads Authority has revealed the engineering details of the road network layers across the Kingdom, clarifying that the road consists of four main layers, including soil, gravel, asphalt, with their thicknesses varying according to technical specifications and environmental conditions. The layers begin from the bottom with a soil base layer that is up to 30 cm thick, followed by a gravel base layer of similar thickness, then an asphalt sub-base layer up to 20 cm thick, and finally an asphalt surface layer not exceeding 5 cm in thickness, which is directly exposed to traffic. This engineering preparation aims to improve road quality and user safety, while ensuring the sustainability of the network in accordance with modern standards aligned with Saudi Vision 2030.
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