Order of work
- Call 811 (in the US) a few days before digging so buried utilities are marked. Ask your town or county whether a new driveway or a connection to the road needs a permit — many require one, and some require a culvert where the drive crosses a roadside ditch.
- Stake out the driveway and set string lines at the finished height, sloping the drive so water runs away from the house and garage.
- Strip the grass and topsoil and dig to the depth shown above. Remove soft spots and roots; save good topsoil for the shoulders and lawn repairs.
- Shape and compact the ground with the same crown as the finished surface — about ½ in per foot from each edge up to the centerline — then compact it until it’s firm.
- Roll out the fabric if you’re using it, overlapping seams 12–18 in and running it up the sides of the excavation.
- Spread and compact the #3 stone, then the #57 stone, no more than about 4 in at a time, keeping the crown as you go.
- Spread the top layer, dampen crusher run lightly and compact it so the stone dust binds. Check the crown with a string line and level.
- Finish the edges: install edging if you chose it, then backfill and seed the shoulders so they sit just below the gravel and let water drain off.
Tools you’ll need
- Plate compactor for paths and small drives; a walk-behind or ride-on vibratory roller for long driveways (both are rental items)
- Skid steer or compact tractor with a box blade for digging and spreading, or shovels and a wheelbarrow for a short drive
- Landscape rake (wide aluminum) and a steel rake
- Stakes, mason’s line, line level and a 4 ft level to set the slope and crown
- Tape measure and marking paint
- Utility knife for fabric, and gloves, safety glasses and hearing protection
About this planner
A gravel driveway that lasts is built in layers: coarse stone at the bottom for strength and drainage, a middle layer that locks it in place, and a top layer that packs into a firm driving surface — all on a crowned, compacted base so rain runs off instead of soaking in. Order too little of any layer and you get ruts and potholes; order by guesswork and you pay for a truckload you don’t need.
This planner works out the tons of stone for each layer from your driveway’s size and the depths you choose, adds geotextile fabric and edging if you want them, prices everything with your local numbers, and gives the figures people forget: how deep to dig, how high to crown the center and how much soil you’ll have to get rid of.
How to use it
- Measure the driveway’s length and width. For a curve or a turnaround, plan each straight part separately and add the lists.
- Choose the top layer. Crusher run (also sold as #411 or “crush and run”) binds into a hard surface; clean #57 stone drains well but stays loose.
- Set the layer depths. The defaults suit a car driveway on average soil; use a deeper bottom layer on clay or soft ground, or leave it out on firm, sandy soil.
- Open Your local prices, enter your quarry’s price per ton, and print the project sheet to order from.
How the quantities are worked out
Tons per layer = length × width × layer depth × 1.15 ÷ 27 × density
Density: #3 and #57 stone 1.4 tons per cu yd, crusher run 1.5
Fabric = length × (width + 2 ft) × 1.10
Dig depth = sum of the layer depths
Crown = width ÷ 2 × ½ in per foot
Soil to haul = length × width × dig depth × 1.25
Loose stone settles and compacts, so each layer is ordered about 15% heavy. Densities are typical supplier figures for dry stone; wet stone weighs more, so ask your quarry for its tons-per-yard number. The crown follows the U.S. Federal Highway Administration’s Gravel Roads Construction and Maintenance Guide, which recommends about ½ in per foot (4%) of cross slope and warns against going past 6%. Excavated soil takes up roughly a quarter more room once it’s dug, which matters when you rent a dumpster or trailer.
Worked example
These are the planner’s starting values and the results they produce:
| Driveway length | 50 ft |
|---|---|
| Driveway width | 12 ft |
| Top layer stone | Crusher run / #411 |
| Top layer depth | 3 in |
| Middle layer: #57 stone | 4 in |
| Bottom layer: #3 stone | 4 in |
| Geotextile fabric under the stone | Yes – clay, silt or wet ground |
| Edging | None – grass or soil shoulders |
| #3 stone, per ton | $45.00 |
| #57 stone, per ton | $45.00 |
| Top layer stone, per ton | $45.00 |
| Geotextile fabric, per sq ft | $0.25 |
| Steel edging, per ft | $3.00 |
| Bought | Item | Buy | Cost |
|---|---|---|---|
| Bottom layer: #3 stone (1–2½ in)8.52 cu yd for 4 in compacted | 11.93 tons | $536.67 | |
| Middle layer: #57 stone (¾ in, clean)8.52 cu yd for 4 in compacted | 11.93 tons | $536.67 | |
| Top layer: crusher run / #4116.39 cu yd for 3 in compacted | 9.58 tons | $431.25 | |
| Geotextile driveway fabric86 sq yd, incl. 1 ft up each side and 10% for overlaps | 770 sq ft | $192.50 | |
| Estimated materials total | $1,697.08 | ||
Tips before you buy
- Have each layer dumped where it will be spread, and ask whether the driver can spread it from the tailgate as the truck moves — many quarries offer this, and it saves hours of raking.
- Don’t use pea gravel or river rock on a driveway: round stones roll under tires instead of locking together.
- Drainage matters more than depth. A crowned surface and shoulders that sit lower than the gravel keep water from softening the base.
- Keep a few tons of the top stone on hand for the first year; low spots and ruts are easy to fill while the drive settles.
- On soft or very wet ground, or for heavy trucks, ask a local contractor or your county engineer about a thicker base.
Frequently asked questions
How much gravel do I need for a 50-foot driveway?
For a 50 × 12 ft driveway built in three layers — 4 in of #3 stone, 4 in of #57 and 3 in of crusher run — you need about 11.93 tons of #3, 11.93 tons of #57 and 9.58 tons of crusher run: roughly 33.4 tons in total, including 15% for compaction. At $45 per ton plus fabric, the materials come to about $1,697.
How deep should a gravel driveway be?
Most residential gravel driveways are 8–12 in deep in total: 4–6 in of #3 stone at the bottom (8 in on clay or soft ground), 3–4 in of #57 stone, and 2–3 in of crusher run on top. The defaults in this planner add up to 11 in.
How much crown should a gravel driveway have?
About ½ in per foot from each edge to the center, roughly a 4% slope. A 12 ft wide driveway should be 3 in higher in the middle than at the edges; a 20 ft wide one about 5 in. More than 6% makes the drive uncomfortable to drive on and can wash out the edges.
Do I need fabric under a gravel driveway?
On clay, silty or wet soil, yes: geotextile fabric keeps the stone from sinking into the mud and the mud from working up into the stone. On firm, sandy, well-drained ground it’s optional. For a 50 × 12 ft driveway, plan on about 770 sq ft (86 sq yd) of fabric, including turn-ups at the sides and overlaps.