Asphalt Millings vs #57 Stone

For the surface of a driveway, compacted asphalt millings usually win. They pack into a firm, fairly smooth layer that doesn't shift much under tires. #57 stone is clean, angular gravel about the size of a grape with the fine particles washed out, so it drains beautifully but never locks together. It stays loose on top, scatters when cars turn, and ruts under heavy loads. #57 earns its place underneath and around a driveway: in drainage trenches, French drains, soft wet spots, and as a clean layer where water needs to move. The two materials aren't really competitors so much as tools for different jobs.

What are asphalt millings → Millings vs crusher run →

What #57 Stone Is

"#57" is a standard size designation for crushed stone. The pieces run roughly from about 1/2 inch to 1 inch, with most in the 3/4-inch range. The key feature is that it's clean, with no stone dust or sand mixed in.

That makes #57:

• Very free-draining. Water passes right through the gaps.
• Stable in a pile, loose in use. The angular faces interlock somewhat, but with no fines to fill the gaps, the stones can still roll and shift.
• Easy to shovel and spread.

What Millings Are

As our explainer on what asphalt millings are describes, millings are the chewed-up top layer of old roads and parking lots, removed by a milling machine before repaving. Each piece is stone with a coat of aged asphalt binder, and the mix includes a range of sizes down to fine grit. When compacted, and especially after some hot days, the particles bond, making a surface that behaves a bit like very rough pavement.

Asphalt Millings vs 57 Stone for Driveways

	#57 stone	Asphalt millings
Compacts into a firm surface	No; stays loose	Yes, with rolling and time
Drainage	Excellent	Moderate
Rutting and scatter	Common under tires	Much less once bonded
Dust	Very low	Low
Walking and shoveling snow	Loose and crunchy; plows scatter it	Firmer, easier to plow
Looks	Clean gray or tan stone	Dark, asphalt-like
Regrading	Easy	Harder after bonding

Where #57 Belongs

• French drains and trench drains. It lets water flow and doesn't clog as fast as stone with fines.
• Under a driveway in wet spots. A layer of clean stone, often wrapped in fabric, can help bridge soft, soggy ground and carry water away.
• Behind retaining walls. For drainage.
• Around foundations and downspouts. Where you want water to soak away quickly.
• As a lower base layer in some designs, topped by a dense-graded layer that locks together.

Where Millings Belong

• The driving surface of a budget driveway, over a firm base
• Parking pads and turnarounds
• Farm lanes and long rural drives
• Paths that need a firm surface

Can You Put Millings Over #57?

You can, but a layer of dense-graded stone in between usually works better. Here's why: millings are smaller than the gaps in #57, so without something in between, some millings sift down into the stone over time. A common layered build looks like this:

1. Subgrade, with fabric on soft soil
2. #57 or larger clean stone, only if the site is wet or soft and needs drainage
3. A few inches of compacted dense-graded base such as crusher run
4. About 3 inches of compacted millings on top

On firm, well-drained soil, you can usually skip the #57 entirely and go straight to a dense-graded base topped with millings. We compare millings and crusher run in a separate post, including how those two layers work together.

Can You Use #57 Alone as a Driveway?

People do, especially for short or low-traffic drives. It drains well and looks tidy when fresh. But expect:

• Stones kicked into the lawn
• Ruts in wheel paths
• Shifting where cars turn
• Snow plows moving a lot of stone

Edging and a thinner top layer help, but a surface that compacts, whether millings or a dense-graded gravel, is usually the better driving surface.

Estimating Quantities

For millings, use our asphalt millings calculator. For stone layers, the asphalt base calculator gives tons for a given depth. Ask each supplier what weight per cubic yard they use for their stone, since it varies with the type of rock.

Cost Considerations

Prices depend heavily on where you live. Millings often sell for somewhere around $15 to $35 per ton before delivery, and clean stone like #57 can be cheaper or more expensive depending on nearby quarries. Because a driveway surface of #57 tends to need regular top-ups as stone scatters, the cheaper material up front isn't always the cheaper driveway over ten years.

A Quick Rule of Thumb

• Want water to move? Clean stone like #57.
• Want a surface that stays put under tires? Something with fines, or millings.

Bottom Line: Asphalt Millings vs #57 Stone

#57 is a drainage stone and millings are a surface material. For the top of a driveway, compacted millings stay put far better. Use #57 where water needs to move, such as in drains, soggy spots, and behind walls, and put a dense-graded base between clean stone and millings if you stack them.