What Size Gravel for Driveway?

A well-built gravel driveway uses three layers of progressively smaller stone: Base Layer (4 inches) Use #3 stone (1-2 inches) or #4 stone (1.5-3 inches). These large angular stones create a stable foundation and won't sink into soft soil. A geotextile fabric under this layer prevents the stone from migrating into the subgrade. Middle Layer (4 inches) #57 stone (3/4 to 1 inch) is the standard choice. It fills the gaps in the base layer, adds stability, and provides a transition to the finer top layer. Top Layer (2-3 inches) #8 gravel (3/8 to 1/2 inch) or crushed limestone creates a smooth driving surface. Some homeowners prefer #411 (a blend of #57 stone and stone dust) because the dust fills voids and compacts into a very firm surface. What to Avoid Avoid using pea gravel or river rock for driveways — their rounded shape means they never lock together and will constantly shift under tires, creating ruts.

#57 Gravel vs Fill Dirt: Size, Cost, and Which to Use

#57 Gravel runs about $20 per ton and Fill Dirt about $5 per ton. Compare size, drainage, compaction, and which one to use.

Overview

#57 Gravel

The 57 comes from the ASTM C33 grading table. Size #57 means most of the stone passes a 1-inch screen and stays on a #4 sieve (about 3/16 inch), with the bulk of it between 1/2 and 1 inch. It is "clean" stone, so there are no fines. That leaves about 35 percent air space in a pile, which is why it drains so well and why it stays loose on its own.

Fill Dirt

Subsoil material free of organic matter, used for grading, filling, and raising elevation. Fill dirt is a lower-grade soil that lacks the nutrients of topsoil, making it ideal for structural and non-growing applications where settling must be minimized.

Common Uses

#57 Gravel

✓ Driveways
✓ French drains
✓ Concrete mix
✓ Pipe bedding
✓ Backfill
✓ Parking pads
✓ Septic systems

Fill Dirt

✓ Grading
✓ Filling depressions
✓ Raising elevation
✓ Backfill
✓ Construction site prep
✓ Under slabs

Pros & Cons

#57 Gravel

+ Cheapest useful stone at $20 to $35 per ton
+ Stocked at every quarry in the country
+ Drains fast, about 35 percent void space
+ Angular pieces interlock under load
+ Works for driveways, drains, concrete, and backfill

− Too coarse to walk on comfortably
− Stays loose, rolls to the edges under tires
− Needs a finer top layer on driveways
− Not decorative

Fill Dirt

+ Very affordable — often cheapest material available
+ Compacts firmly for structural support
+ Does not decompose or settle like organic soil
+ Widely available from construction sites
+ Ideal base under gravel or concrete

− Not suitable for growing plants
− Must be free of debris and contaminants
− May contain clay that drains poorly
− Needs compaction in layers for stability
− Quality varies widely between sources

Cost Comparison

Measure	#57 Gravel	Fill Dirt
Per ton	$20 – $35	$5 – $15
Per cubic yard	$25 – $45	$8 – $25

Sizes & Colors

#57 Gravel

#57 gravel is angular crushed stone screened to 3/4 inch to 1 inch, with a few pieces down to 1/2 inch. Color depends on the quarry: gray or blue-gray limestone through the Midwest and Northeast, gray, white, and pink granite in the Southeast, tan limestone in Texas, and dark basalt in the Northwest.

Fill Dirt

Fine to coarse soil particles, free of organic matter like roots, grass, or leaves. Color ranges from tan to reddish-brown depending on local geology. "Clean fill" means free of debris, rocks larger than 3", and contaminants.

Published February 11, 2026

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