Driveways, culverts, and the first hundred feet
Owners assess access by whether a machine can physically get in. The more expensive question is what the route looks like afterwards — because the drive, the culvert under it, and the verge on either side were built for a car.
Published by the Land Clearing Authority editorial team · Last revised 2026-07-29 · Editorial policy · Corrections
Who this is for
- Owners whose only access is an existing residential driveway
- Anyone with a culvert, cattle grid, or bridge on the way in
- People whose scope includes material leaving by truck
The short answer
A residential drive is designed for passenger vehicles and light deliveries. A low-loader delivering a machine, and loaded trucks removing material, apply loads it was not built for, in the same wheel tracks, repeatedly.
The culvert is the weak point. A pipe under a driveway carries the drive above it, and its capacity depends on the pipe, its condition, and the depth of cover — none of which is visible. A collapsed culvert is a serious repair and it takes the access with it.
Verges and edges fail next. Drive edges without a kerb crumble under a wheel that runs slightly wide, and a machine turning at the end of a drive scuffs whatever it turns on.
The decision this drives is about routes and expectations: whether material leaves at all, whether it leaves by a different route, and what condition the drive will be returned in. All three should be settled before work rather than after.
What changes the answer
- The construction and condition of the existing drive
- Whether a culvert, bridge, or grid sits on the route
- How much material has to leave, and in what vehicle
- How the machine will turn, and where
- Whether an alternative route onto the property exists
What each part of the route has to survive
Walk the first hundred feet with this in mind and the risks become obvious rather than theoretical.
| Component | What it was built for | How it fails under clearing traffic |
|---|---|---|
| Asphalt or concrete drive | Cars, light deliveries | Cracking and edge break-up under tracked or loaded weight |
| Gravel drive | Cars, occasional trucks | Rutting, displacement, and loss of surface material |
| Culvert under the drive | The drive above it and normal flow | Crushing or deformation, sometimes not visible until later |
| Drive edges and verges | Nothing in particular | Crumbling where a wheel runs wide |
| Turning area | A car turning once | Scuffing and surface tearing from repeated machine turns |
| Overhead along the drive | Vehicle height | Branches and wires struck by machine or loaded truck |
The culvert question, and how to ask it
You cannot establish a culvert’s load capacity by looking at it, and neither can a clearing contractor. What you can do is gather the information that exists.
Note the pipe material and diameter where the ends are visible, whether either end is deformed or silted, and how much cover sits over it. If the drive is on a public right of way, the authority that owns the road may hold records or requirements about loads crossing it.
Then raise it explicitly. A contractor told that the culvert is of unknown capacity can plan around it — bridging plates, a lighter delivery arrangement, or an alternative entry. A contractor who was not told will drive over it.
Whether material should leave at all
A large part of access risk comes from haulage rather than from the machine, and haulage is a scope decision you control.
Where material can stay — mulched in place, chipped and spread, piled somewhere out of the way — the number of loaded vehicle movements over the drive falls to near zero. That is a genuine argument for on-site handling that has nothing to do with the cost of disposal.
Where material must leave, the questions are how many loads, what vehicle, and whether it can load from somewhere other than the end of the drive. Loading from a field entrance or a verge, where one exists, can remove most of the traffic from the drive entirely.
The entrance onto the public road
The pinch point on most residential access is not on the property at all. It is where the drive meets the road.
Three things constrain it. The turning radius from the carriageway into the drive determines whether a low-loader can enter without mounting the verge or blocking a lane. Gate posts and mailbox pillars set the effective width, and they are frequently narrower than the drive behind them. And sight lines matter, because a vehicle waiting to turn in, or a machine being unloaded on the verge, occupies road space for as long as it takes.
Where the drive serves a public road, the authority owning that road may have requirements about vehicles stopping, unloading, or crossing the verge. That is a local question worth asking before a low-loader is booked, not while it is parked across a lane.
The practical mitigation is often to unload somewhere else. A field gate, a wide verge, or a neighbouring hardstanding — with permission — can take the delivery entirely off the drive and off the road frontage.
Recording the condition before anyone arrives
This costs twenty minutes and settles almost every access dispute that would otherwise happen.
Photograph the whole route on the day before work starts: the drive surface, both edges, the culvert ends, the turning area, the verges, and any gate posts. Date-stamped images of existing cracks and potholes protect both parties, because they establish what was already there.
Then agree in writing what condition the route will be left in and who repairs what. "Returned to its pre-existing condition, as photographed" is a standard that can be tested. "Left tidy" is not.
What drives the cost
| Driver | Effect |
|---|---|
| Number of loaded vehicle movements | Haulage traffic, not the machine, causes most drive damage |
| Culvert protection or bridging | Plates or an alternative route to avoid a suspect crossing |
| Turning area availability | Repeated turning on a finished surface causes scuffing and tearing |
| Surface repair obligation | Returning gravel, edges, or verges to condition is work beyond the clearing |
| Alternative access availability | A second entry point can remove the drive from the equation entirely |
Common mistakes
- Assessing access only for whether the machine fits
- Never mentioning the culvert because it has always been fine
- Agreeing to remove material without counting the truck movements
- Letting the machine turn repeatedly on a finished drive surface
- Failing to photograph the route before work starts
Questions to ask a contractor
- How many loaded vehicle movements does this scope involve?
- Can you load from anywhere other than the end of the drive?
- How will you handle the culvert, given its capacity is unknown?
- Where will the machine turn, and what surface will it turn on?
- What condition will the drive and verges be in when you leave?
What to do next
- Photograph the whole access route, dated, before work begins
- Note culvert material, diameter, condition, and depth of cover
- Ask each bidder how many loaded movements their scope requires
- Agree the route’s return condition in writing against your photographs
Questions people actually ask
Will a tracked machine damage my asphalt drive?
It can, particularly when turning, and steel tracks more readily than rubber. The usual mitigations are plates over the drive, a delivery arrangement that keeps the machine off it, or accepting the marks. All three should be decided in advance.
How do I find out what my culvert can carry?
Often you cannot with certainty. What is available is the pipe material, diameter, visible condition, and depth of cover, plus any records held by the authority owning the road it serves. Treat unknown capacity as a constraint to plan around.
Should the contractor repair drive damage?
That depends entirely on what you agreed. A written return-to-condition standard tied to dated photographs is the practical way to make the question answerable; without one it becomes a matter of recollection.
Is it cheaper to keep the material on site?
Frequently, and this page adds a second reason beyond disposal cost: fewer loaded vehicle movements over an access route that was not built for them. Whether it suits your end use is a separate question.
Work out the scope before you ask for prices
Answer the five questions every quote depends on — what is growing, where the material goes, how deep removal has to reach, whether equipment can get in, and what the land is for afterwards. Then send one properly described project to the right kind of contractor.
Nothing on this site is a recommendation of a specific company. The guidance describes categories of work and the questions worth asking. If you decide to request quotes, the introduction is free to you, contractors may pay to receive it, and you are under no obligation to hire anyone.