Tons of Asphalt per Mile of 20 ft Road

Tons of asphalt per mile of 20 foot road: about 1,914 tons at 3 inches compacted. The strip is 20 ft × 5,280 ft = 105,600 square feet. On a job this long, half an inch of extra depth adds a lot of tons.

Asphalt tonnage calculator →

Tons by depth

Depth	Tons	Truckloads (~14 t)
2 in	1,276	92
3 in	1,914	137
4 in	2,552	183

The math

Area: 20 × 5,280 = 105,600 sq ft.
Volume at 3 in: 105,600 × 0.250 = 26,400 cu ft.
× 145 lb ÷ 2,000 = 1,914 tons.

Road section basics

A 20-foot width allows two vehicles to pass carefully. 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.

Good and poor uses for asphalt

Best suited to:

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

Think twice for:

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 20x25 area at 4 inches takes about 12.3 tons.
Weight used here: about 2.0 tons per cubic yard (roughly 145 lb per compacted cubic foot).

Mistakes that throw off the order

Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
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.
Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.

Questions people ask

How many tons of asphalt per mile of 20 ft road?

About 1,914 tons at 3 inches.

How many truckloads is that?

About 137 loads at roughly 14 tons each.

How many square feet is mile of 20 ft road?

105,600 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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