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Tons of Road Base per Mile of 24 ft Road

Tons of road base per mile of 24 foot road: about 3,520 tons at 6 inches deep. The strip is 24 ft × 5,280 ft = 126,720 square feet. On a job this long, half an inch of extra depth adds a lot of tons.

Volume and tonnage calculator →

Tons by depth

DepthTonsTruckloads (~14 t)
3 in1,760126
4 in2,347168
6 in3,520252
8 in4,693336

The math

  1. Area: 24 × 5,280 = 126,720 sq ft.
  2. Volume at 6 in: 126,720 × 0.500 = 63,360 cu ft (2,347 cubic yards).
  3. × 1.5 tons per yard = 3,520 tons.

Road section basics

At 24 feet wide, this is a two-lane road width. Road base (also called base rock, ABC, or Class 2 base in different states) is a graded mix of stone and fines made to compact into a load-bearing layer. 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.

Good and poor uses for road base

Good uses:

  • Base under asphalt and concrete
  • Gravel roads and drives
  • Equipment and shed pads

Poor fit for:

  • Drainage layers
  • Decorative surfaces
  • Surfaces that will stay uncompacted

Quick reference numbers

  • Per inch over 100 sq ft: about 0.46 tons of road base (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.6 tons.
  • Another size for comparison: a 8x16 area at 4 inches takes about 2.4 tons.
  • Weight used here: about 1.5 tons per cubic yard.

Common estimating mistakes

  • Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
  • Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
  • Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
  • Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.

Questions people ask

How many tons of road base per mile of 24 ft road?

About 3,520 tons at 6 inches.

How many truckloads is that?

About 252 loads at roughly 14 tons each.

How many square feet is mile of 24 ft road?

126,720 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.

Related guides

Open the volume and tonnage calculator → Asphalt tonnage calculator →

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