Where General Contractors Actually Save on Dirt Haul

Why the savings are still there

By the time a project reaches buyout, most of the big line items have been through several rounds. Concrete, steel, mechanical and labor all get compared, negotiated and value engineered. Dirt haul frequently does not, partly because it is treated as a commodity and partly because it is often bundled inside somebody else’s scope where nobody sees it as its own number.

That is the whole opportunity. An item that has never been examined tends to have more slack in it than an item that has been examined five times.

Lever one: pair the export with an import

If a site is hauling material out and also bringing material in, or if a project nearby is doing the opposite, those two movements can often share truck cycles. A truck that runs loaded in both directions spreads the cost of the cycle across two loads instead of one, and both sides get cheaper at once.

This is the biggest single lever we see. On a West Fort Worth job we moved 13,000 tons of rock out while backhauling common fill in, and the paired price came in at roughly a third of the next lowest of four bids. The full breakdown is on the backhaul project page.

Lever two: match surplus to a nearby site instead of a landfill

Exporting clean material to a disposal site pays a tipping fee and a longer haul, because disposal sites are not where the construction is. Sending the same material to a project a few miles away that needs fill removes the fee and shortens the trip. On a job in Melissa that cut the export cost nearly in half; the detail is on the Melissa export page.

The material has to qualify. Clean common fill from a cut is the straightforward case. Wet clay, stripped topsoil and spoil mixed with debris are harder, and our guide on dirt export and haul off covers where each ends up.

Lever three: get the truck class right

Truck selection is quietly expensive. Too small and the load count goes up along with the trips, the traffic and the hours. Too large and access, weight limits or site conditions make the truck unusable for part of the route, so you pay for capacity you cannot fill. Dense material like rock hits legal weight before it fills the box, which changes the calculation again.

This is the cheapest of the four levers to get right, because it is decided once. Our guide on dump truck sizes and dirt load capacity lays out what each class actually carries.

Lever four: the one that controls the other three

Every lever above is a timing lever. A pairing needs a matching site wanting trucks in the same window. A surplus match needs a receiving project that wants that material. Truck class needs deciding before the fleet is booked. Told a month out, all of them are live options. Told the morning the trucks are booked, none of them are, and the job pays whatever the spot market charges.

That is also the schedule argument. Earthwork sits near the front of the critical path, so a dirt problem discovered at rough grade does not just cost more, it delays everything queued behind it. Our page on the Carrollton emergency import shows what a fast turnaround looks like when it goes well, and it went well because material happened to be nearby.

How to price it properly

Ask for the material and the trucking together rather than separately, because splitting them hides the haul distance, which is usually the biggest component of delivered cost. Ask what happens to the surplus and where the import is coming from. Ask whether the two can be paired.

If you want the volumes before you have anyone on site, the earthwork calculator produces cut and fill quantities from published terrain data, and the soil calculator converts a known area and depth into yards, tons and truckloads.