Tons of Road Base per Mile of 12 ft Road
Tons of road base per mile of 12 foot road: about 1,760 tons at 6 inches deep. The strip is 12 ft × 5,280 ft = 63,360 square feet. Shoulders, pullouts and turnarounds add to the total; measure them separately.
Volume and tonnage calculator →Tons by depth
| Depth | Tons | Truckloads (~14 t) |
|---|---|---|
| 3 in | 880 | 63 |
| 4 in | 1,173 | 84 |
| 6 in | 1,760 | 126 |
| 8 in | 2,347 | 168 |
The math
- Area: 12 × 5,280 = 63,360 sq ft.
- Volume at 6 in: 63,360 × 0.500 = 31,680 cu ft (1,173 cubic yards).
- × 1.5 tons per yard = 1,760 tons.
Building a road this width
A 12-foot width fits one lane of traffic. 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.
Where road base fits
Best suited to:
- 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 20x25 area at 2 inches takes about 4.6 tons.
- Weight used here: about 1.5 tons per cubic yard.
Mistakes that throw off the order
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons 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 12 ft road?
About 1,760 tons at 6 inches.
How many truckloads is that?
About 126 loads at roughly 14 tons each.
How many square feet is mile of 12 ft road?
63,360 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
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- Asphalt Hauling Cost Per Ton: What Drives the Delivered Price
- Crushed Stone vs Gravel: Differences and Best Uses
- Tons of Road Base per Mile of 10 ft Road
- Tons of Road Base per 100 Feet of 10 ft Road
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