Tons of Asphalt Millings per Mile of 18 ft Road

Tons of asphalt millings per mile of 18 foot road: about 1,525 tons at 4 inches deep. The strip is 18 ft × 5,280 ft = 95,040 square feet. Long runs magnify small depth changes, so pin the depth down before ordering.

Volume and tonnage calculator →

Tons by depth

Depth	Tons	Truckloads (~14 t)
3 in	1,144	82
4 in	1,525	109
6 in	2,288	164
8 in	3,051	218

The math

Area: 18 × 5,280 = 95,040 sq ft.
Volume at 4 in: 95,040 × 0.333 = 31,680 cu ft (1,173 cubic yards).
× 1.3 tons per yard = 1,525 tons.

Road section basics

A 18-foot width allows two vehicles to pass carefully. 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. Crown the surface so water sheds to ditches on both sides.

Practical notes

Phasing. Large tonnages are delivered over days; schedule spreading and compaction to keep up with trucks.
Waste. Allow 5 to 10 percent.
Hauling. Distance from the quarry or plant often costs as much as the material on long jobs; see asphalt hauling cost per ton.

Check other sizes with the volume and tonnage calculator.

When to choose 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

Less suited to:

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 10x20 area at 3 inches takes about 2.4 tons.
Weight used here: about 1.3 tons per cubic yard.

Mistakes that throw off the order

Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
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.

Questions people ask

How many tons of asphalt millings per mile of 18 ft road?

About 1,525 tons at 4 inches.

How many truckloads is that?

About 109 loads at roughly 14 tons each.

How many square feet is mile of 18 ft road?

95,040 square feet.

Should I add extra for waste?

Yes, 5 to 10 percent is common.

Does this include the shoulders?

No. Measure shoulders and pullouts separately and add them.

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