How Much Asphalt Millings for a 14x90 Driveway?

How much asphalt millings for a 14x90 driveway: at 4 inches deep you need about 15.56 cubic yards, which is roughly 20.2 tons at 1.3 tons per yard. The driveway covers 1,260 square feet, so every inch of depth adds about 3.89 yards.

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The math for a 14x90 driveway

Area: 14 × 90 = 1,260 sq ft.
Depth in feet: 4 ÷ 12 = 0.333 ft.
Cubic feet: 1,260 × 0.333 = 420.0 cu ft.
Cubic yards: ÷ 27 = 15.56 yd³.
Tons: × 1.3 = 20.2 tons.

The volume and tonnage calculator does this for any size.

Asphalt millings needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
3 in	11.67	15.2	16.7
4 in	15.56	20.2	22.2
6 in	23.33	30.3	33.4

About asphalt millings

Asphalt millings are ground-up old pavement. When compacted and warmed by sun they bind into a fairly firm surface, which is why they are popular for rural drives and lots. Ask your supplier for their own tons-per-yard figure, since stone source and moisture shift it.

Preparing the driveway

Strip sod and soft topsoil, grade for drainage and compact the subgrade before any stone goes down. Gravel drives last longer with a compacted base layer under the top stone and a slight crown so water runs off. This driveway sees car and truck traffic, so match the depth to that load rather than to the minimum.

Ordering tips

Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
Delivery size. 22.2 tons may take more than one typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
Bulk vs bags. At this size bulk delivery is usually the practical choice.
Where it drops. Have the truck dump as close to the driveway as firm ground allows.

Good and poor uses for asphalt millings

Best suited to:

Rural driveways and farm lanes
Parking areas where a dust-free surface is wanted
Low-cost base under a future paved surface

Poor fit for:

Areas near wells or streams where local rules limit them
Decorative or barefoot areas
Jobs needing a uniform, clean look

Quick reference numbers

Per inch over 100 sq ft: about 0.40 tons of asphalt millings (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.0 tons.
Another size for comparison: a 12x24 area at 3 inches takes about 3.5 tons.
Weight used here: about 1.3 tons per cubic yard.

Where estimates go wrong

Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.

Questions people ask

How many tons of asphalt millings for a 14x90 driveway?

About 20.2 tons at 4 inches deep, or 22.2 tons with 10 percent extra.

How many cubic yards is a 14x90 driveway at 4 inches?

About 15.56 cubic yards.

How much does a cubic yard of asphalt millings weigh?

Usually around 1.2 to 1.4 loose tons, depending on stone size, fines and moisture.

How deep should asphalt millings be for a driveway?

The table above shows 3 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 14x90?

1,260 square feet.

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