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How Much Road Base for a 75 Foot Driveway?

How much road base for a 75 foot driveway: about 16.7 tons for a 12-foot-wide lane at 4 inches deep. That is 900 square feet and 11.11 cubic yards.

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The math

  1. Area: 900.0 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic yards: 900.0 × 0.333 ÷ 27 = 11.11 yd³.
  4. Tons: × about 1.5 tons per yard = 16.7 tons.

The crushed stone calculator does this for any size.

Road base needed by depth

DepthCubic yardsTons of road baseTons +10%
2 in5.568.39.2
4 in11.1116.718.3
6 in16.6725.027.5
8 in22.2233.336.7

Tons by driveway width

WidthTons at 4 inTons at 6 in
10 ft13.920.8
12 ft16.725.0
14 ft19.429.2
16 ft22.233.3

Truck loads

Plan for about 18.3 tons with waste. On a 15-ton truck that is about 2 trips; spreading while dumping (a tailgate spread) puts the stone close to where it belongs.

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

If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. Road base is a graded stone-and-fines mix built to compact into a load-bearing layer. The scale ticket is the real weight; tons per yard here is a planning figure.

Questions people ask

How many tons of road base for a 75 ft driveway?

About 16.7 tons at 12 ft wide and 4 inches deep.

How many truck loads for a 75 ft driveway?

About 2 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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