Protecting a Driveway During a Roof or Concrete Delivery

The site-notes box on my order screen is usually one line: “driveway pour, call on arrival.” The line I actually need is whether the truck is allowed on the existing concrete, because that answer decides which truck leaves the yard, and I decide that the night before. By the time a driver is idling at your curb with a rotating drum on a 90-minute clock, nobody is renegotiating access.

Same story for a roof tear-off, a stone drop or a dumpster. Somebody is routing a heavy vehicle onto a slab that was designed for two sedans, and the person who could have prevented the damage was on the phone three days earlier.

The questions worth answering before a truck rolls

• Can the truck stay in the street? A rear-discharge mixer chute reaches roughly 12 to 18 feet past the back of the truck with the extensions on. If the pour sits inside that, nothing has to touch your driveway.
• What is the existing slab? Age, thickness if anyone knows it, and whether there is steel in it. A 4-inch unreinforced pour from the 1980s is a different conversation than 6 inches with #4 rebar at 18 inches on center.
• Where is the apron? The strip between sidewalk and street breaks first on nearly every job. Every vehicle crosses it, and it is often the thinnest concrete on the property.

The arithmetic is not subtle. Ten yards of concrete is about 40,000 lb riding on a truck that already weighs 30,000 lb empty, and most of that load sits on one rear axle group. Gross and axle weights are the whole basis for how a carrier registers and inspects equipment, and FMCSA publishes the federal rules we run under. Our breakdown of what a loaded concrete truck actually weighs goes axle by axle. Residential flatwork was sized around maybe 3,000 to 4,000 lb per axle, which is why “just back it up slowly” is not a plan.

What spreads load, and what only makes people feel better

Plywood is the one I hear most. Two sheets of three-quarter-inch plywood over a 4-inch slab spread almost nothing. Plywood keeps the concrete from getting scuffed and stained. It does not change the pressure arriving underneath it.

What genuinely spreads load is heavy and awkward: hardwood timber mats renting at $150 to $400 each per week, one-inch steel road plates, or three stacked layers of 2×12 cribbing under an outrigger foot. A shingle boom truck or a conveyor sets outriggers on pads the size of a dinner plate, with 15,000 to 25,000 lb coming down through each. Cribbing there is not optional, and any decent operator carries it.

For most houses the honest answer is simpler: keep the truck off, and pay a little to do it.

What it costs to stay in the street

A wheelbarrow or a walk-behind buggy moving concrete from a curbside truck runs $300 to $700 in extra labor on a typical driveway. A line pump is $700 to $1,400 for a residential day, a boom pump $1,100 to $2,200. If you want a smaller truck so it can turn around outside, expect a short-load fee of $40 to $100 for every yard below the plant minimum, which is usually 8 to 10 yards.

Material deliveries are cheaper to solve. Ask for the drop on the lawn or in the street, and put the dumpster on 4×4 cribbing or on the street under a right-of-way permit, commonly $25 to $150. All of that beats a panel replacement at $1,200 to $2,600.

Frequently asked questions

Will sheets of plywood protect my driveway from a concrete truck? No. Plywood prevents scuffing and spatter, not cracking. Spreading a wheel load meaningfully takes timber mats or steel plate, and even those are a partial measure on a thin slab.

What is the cheapest way to keep a mixer off the concrete? Design the pour around chute reach. If the forms are within about 15 feet of where the truck can legally sit, the driver discharges from the street and you pay nothing extra. Past that, a buggy is usually the next cheapest option.

Should I photograph my driveway before a delivery? Yes, the morning of, with wide shots and close shots of any existing cracks. It takes two minutes and it settles most disagreements before they start. Roofing deliveries put the same weight in the same place, so a Gresham roofing contractor should be told where the dump truck is allowed to sit before the pallets are ordered.

Mix guidance: National Ready Mixed Concrete Association.