Road Base Gravel: Uses, Coverage & Calculator
Built for traffic: a compactable gravel that forms a hard, durable base for roads, driveways and equipment pads.
What is Road Base Gravel?
Road base is a dense-graded mix of crushed stone and fines designed to compact into a strong, load-bearing layer. Exact gradation varies by region and supplier.
It is the go-to material for gravel roads, long rural driveways, equipment pads and the layer beneath asphalt or concrete, because it resists rutting under repeated heavy loads.
| Specification | Details |
|---|---|
| Gradation | Dense-graded, about 3/4″–1″ to fines |
| Shape | Angular, crushed |
| Fines | Yes, binds when compacted |
| Also known as | Base rock, aggregate base |
| Approx. weight | 1.45 tons (~2,900 lbs) per cubic yard |
Best uses
- Gravel roads and long driveways
- Base under asphalt and concrete
- Equipment and RV pads
- Parking lots and turnarounds
Not ideal for
- Drainage fill
- Decorative landscaping
- Play areas
How much Road Base Gravel do I need?
Enter your area and depth to get cubic yards and tons. Results update as you type.
You'll need about
Based on about 1.45 tons (~2,900 lbs) per cubic yard. Actual weight varies with moisture and source, so treat results as an estimate.
Recommended depth by project
Typical installed depths for Road Base Gravel. Check local codes or your contractor for structural work.
| Project | Depth | Notes |
|---|---|---|
| Residential driveway | 6″ | Compact in two lifts |
| Heavy traffic or RV pad | 8″ | Over geotextile on soft soil |
| Under asphalt | 6″ | Per your paving contractor |
How to install Road Base Gravel
A few steps make a big difference to how long it lasts.
- Grade the subgradeShape and compact the native soil, with a crown for runoff.
- Add fabric if softGeotextile stops base from sinking into wet clay.
- Spread and compactPlace in 3–4″ lifts, wet lightly and roll each lift.
Road Base Gravel questions
Quick answers to what customers ask most.
What is the difference between road base and crushed run?
Both are compactable stone-and-fines blends. Names and gradations vary by region; road base is typically a little finer and is specified for roads.
How much road base do I need for a driveway?
At 6″ deep, one ton covers about 37 sq ft. A 12 by 50 ft driveway needs about 16 tons.
Can road base be the top surface?
Yes, it makes a durable driving surface on its own and can be regraded when needed.
Related materials
Not sure this is the right one? Compare similar options.
Drainage & BaseCrushed Run Base MaterialDense stone-and-fines blend for driveways and foundations.
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Drainage & Base3/4″ Minus Base GravelCompactable gravel with fines for driveways, patios and slabs.
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Drainage & BaseAsphalt MillingsRecycled asphalt for low-dust driveways and parking areas.
Read guide & calculator →Ready to order Road Base Gravel?
Delivered by the ton or cubic yard to your driveway or job site.