4 inches is standard for gravel driveways
💰 Estimated Cost
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Gravel Driveway Depth Guide
- 4 inches: Standard depth, suitable for most residential driveways
- 6 inches: Recommended for heavy traffic or soft/clay soil
Many driveways use a layered approach: 4 inches of crusher run base topped with 2 inches of decorative gravel. The base layer provides stability and drainage, while the top layer gives a finished look.
Best Gravel for Driveways
Crusher Run / #57 Stone — Best Overall
Angular stones that lock together when compacted, creating a firm surface. Excellent drainage and long-lasting durability. The top choice for most residential driveways.
Pea Gravel — Decorative but Shifts
Smooth, rounded stones that look attractive but tend to shift underfoot and under tires. Requires sturdy edging to stay in place. Better suited as a top layer over a compacted base.
River Rock — Not Ideal for Driveways
Too round and smooth for driveways — stones move under tire weight and never lock together. Best reserved for decorative landscaping, not traffic areas.
Base Layer Tip
Gravel Driveway Cost
Cost Per Square Foot
- Materials only: $1–$3 per sq ft
- Professional installation: $3–$7 per sq ft (includes grading, fabric, and compaction)
Common Driveway Sizes
- Single car (10×20 = 200 sq ft): $200–$600 materials / $600–$1,400 installed
- Double car (20×20 = 400 sq ft): $400–$1,200 materials / $1,200–$2,800 installed
- Long single (10×40 = 400 sq ft): $400–$1,200 materials / $1,200–$2,800 installed
Costs vary by region, gravel type, and delivery distance. Ordering in bulk (by the ton) is significantly cheaper than buying bags for any driveway-sized project.
Frequently Asked Questions
How deep should a gravel driveway be?
4 inches minimum for residential driveways. Use 6 inches for heavy use or if your soil is soft or clay-based. A layered approach (4 inches base + 2 inches top) gives the best results.
How many tons of gravel for a 2-car driveway?
A typical 2-car driveway (20×20 feet) at 4 inches deep requires about 8–10 tons of gravel, depending on the gravel type. Crushed stone at this size needs approximately 9.3 tons.
Gravel vs concrete driveway?
Gravel driveways cost $1–$3 per square foot and are easy to DIY. Concrete driveways cost $8–$18 per square foot but last 25–30 years with minimal maintenance. Gravel is the budget-friendly choice; concrete is the long-term investment.
Do I need landscape fabric under driveway gravel?
Yes. Landscape fabric prevents gravel from sinking into the soil over time, reduces weed growth, and helps maintain a clean separation between your gravel layer and the ground beneath. Use heavy-duty woven fabric for driveways.