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How Much Road Base for a 50 Foot Driveway?

How much road base for a 50 foot driveway: about 11.1 tons for a 12-foot-wide lane at 4 inches deep. That is 600 square feet and 7.41 cubic yards.

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The math

  1. Area: 600.0 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic yards: 600.0 × 0.333 ÷ 27 = 7.41 yd³.
  4. Tons: × about 1.5 tons per yard = 11.1 tons.

The crushed stone calculator does this for any size.

Road base needed by depth

DepthCubic yardsTons of road baseTons +10%
2 in3.705.66.1
4 in7.4111.112.2
6 in11.1116.718.3
8 in14.8122.224.4

Tons by driveway width

WidthTons at 4 inTons at 6 in
10 ft9.313.9
12 ft11.116.7
14 ft13.019.4
16 ft14.822.2

Truck loads

With about 10 percent extra, this is 12.2 tons, roughly 1 load if the yard runs 15-ton trucks. Ask the driver to tailgate-spread it along the drive to save hours of raking.

Base and top layer

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 50 ft driveway?

About 11.1 tons at 12 ft wide and 4 inches deep.

How many truck loads for a 50 ft driveway?

About 1 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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