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How Much Road Base for a 250 Foot Driveway?

A 250-foot driveway at the common 12-foot width covers 3,000 square feet. Spread 4 inches deep, how much road base for a 250 foot driveway comes to roughly 55.6 tons.

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The math

  1. Area: 3,000.0 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic yards: 3,000.0 × 0.333 ÷ 27 = 37.04 yd³.
  4. Tons: × about 1.5 tons per yard = 55.6 tons.

The crushed stone calculator does this for any size.

Road base needed by depth

DepthCubic yardsTons of road baseTons +10%
2 in18.5227.830.6
4 in37.0455.661.1
6 in55.5683.391.7
8 in74.07111.1122.2

Tons by driveway width

WidthTons at 4 inTons at 6 in
10 ft46.369.4
12 ft55.683.3
14 ft64.897.2
16 ft74.1111.1

How many loads

With about 10 percent extra, this is 61.1 tons, roughly 5 loads if the yard runs 15-ton trucks. Ask the driver to tailgate-spread it along the drive to save hours of raking.

Layers for a lasting driveway

If this is a new driveway on soil, build a base of 4 to 6 inches of coarse stone first and finish with a packable surface stone. For a refresh, 2 inches over the old surface is common. Add culverts or ditches where water crosses the drive.

Buying the stone

Small dump trucks commonly carry around 5 to 10 tons and tri-axles more, but loads vary by truck and state, so ask the yard what fits in one trip. Road base is a graded stone-and-fines mix built to compact into a load-bearing layer. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.

Questions people ask

How many tons of road base for a 250 ft driveway?

About 55.6 tons at 12 ft wide and 4 inches deep.

How many truck loads for a 250 ft driveway?

About 5 loads of 15 tons, including some extra.

How many tons of road base are in a cubic yard?

Roughly 1.5 tons for planning, but suppliers vary with stone size and moisture.

Should I put landscape fabric under the stone?

On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.

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