Tons of Asphalt per Mile of 18 ft Road

Tons of asphalt per mile of 18 foot road: about 1,723 tons at 3 inches compacted. The strip is 18 ft × 5,280 ft = 95,040 square feet. Shoulders, pullouts and turnarounds add to the total; measure them separately.

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Tons by depth

Depth	Tons	Truckloads (~14 t)
2 in	1,148	83
3 in	1,723	124
4 in	2,297	165

The math

Area: 18 × 5,280 = 95,040 sq ft.
Volume at 3 in: 95,040 × 0.250 = 23,760 cu ft.
× 145 lb ÷ 2,000 = 1,723 tons.

What goes into the section

At 18 feet wide, two cars can meet with care. Paved roads sit on a compacted aggregate base, ordered separately from the asphalt. 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 asphalt tonnage calculator.

When to choose asphalt

Good uses:

Driveways, parking pads and private lanes that need a smooth, sealed surface
Overlays on old pavement that is cracked but still structurally sound
Areas where snow will be plowed, since a paved surface does not throw stone

Less suited to:

Ground that stays soft or wet, unless the base and drainage are fixed first
Very small patches, where bagged cold patch is often simpler
Jobs in cold weather, since hot mix needs warm temperatures to compact properly

Quick reference numbers

Per inch over 100 sq ft: about 0.62 tons of asphalt (0.31 cubic yards).
Per inch over 1,000 sq ft: about 6.2 tons.
Another size for comparison: a 14x28 area at 3 inches takes about 7.3 tons.
Weight used here: about 2.0 tons per cubic yard (roughly 145 lb per compacted cubic foot).

Common estimating mistakes

Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
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 per mile of 18 ft road?

About 1,723 tons at 3 inches.

How many truckloads is that?

About 124 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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