Geogrid for Gravel Roads

A geogrid is a high-tensile polypropylene grid placed within the aggregate base layer of a gravel road. It mechanically interlocks with surrounding stone, distributing vehicle loads over a larger area, preventing aggregate migration, and increasing the road's load-bearing capacity — significantly reducing rutting and road degradation over time.

Biaxial geogrids have a rectangular aperture structure that distributes loads in two directions — length and width — making them ideal for road base and pavement reinforcement. Triaxial geogrids feature a triangular rib geometry that distributes loads radially in multiple directions, providing superior all-around stabilization and stiffness for unpaved and soft-subgrade applications.

By reinforcing the aggregate base, geogrids allow engineers to reduce required subbase thickness by 30–50% in many applications. Coleman Moore integrates with Tensar Plus design software to calculate exact aggregate savings for your specific soil conditions and traffic loads, enabling accurate cost-benefit analysis before project mobilization.

Yes. Geogrids are specifically engineered to stabilize soft, weak, or saturated subgrades. When placed directly on soft soil beneath a gravel base, they prevent aggregate from punching down into the subgrade, maintaining road surface integrity. Coleman Moore also offers on-site DCP testing to assess subgrade strength and prescribe the right geogrid solution.

Geogrids are used across a wide range of industries including road construction, mining, logging, wind energy, municipalities, and agriculture. Common applications include access roads, haul roads, parking lots over soft subgrades, logging tracks, wind farm service roads, and rural county road rehabilitation — anywhere load-bearing performance on unpaved surfaces is required.

Geogrids are engineered for permanent, long-term performance. Made from polypropylene, they are resistant to UV radiation, soil chemicals, and mechanical damage. When properly installed in a gravel road base, they are designed to last the full service life of the road, providing a durable, maintenance-reducing solution for both light and heavy-traffic unpaved roads.