To fix a pothole in a gravel driveway, clear out the water and mud, loosen the edges, refill it with crushed stone that has fines, and compact it in layers until it sits slightly proud of the surface. Then restore the crown, because potholes form where water sits and keep coming back until it can run off.
Why potholes form in gravel
A pothole starts as a low spot where water sits. Each tire that passes through splashes out a little stone and some of the fine material that binds it. The hole gets deeper, holds more water, and grows faster.
The low spot usually has a cause. The crown has flattened, so rain no longer runs off. A berm at the edge traps water on the drive. A soft patch under the stone sinks. Shade keeps one stretch wet for days.
Potholes are not the same as washouts. A washout is a gully cut by running water, and our guide to fixing a washed-out driveway covers that. Potholes come from standing water. Washboard, the ripples across a drive, is different again. It comes from traffic and dry, loose stone.
What you need
Use crushed stone with fines, the kind sold as crusher run or ABC in North Carolina. The angular pieces lock together and the fines bind them. If your drive has a different surface stone, match it on top.
You will also need a shovel, a rake, a mattock or pick to loosen the edges, and something to compact with. A hand tamper is fine for a few holes. A plate compactor does a better job on many.
A hose or a bucket of water helps too. Crushed stone compacts far better damp than bone dry.
Skip round stone, pea gravel, sand and dirt. Round stone will not lock. Sand and dirt wash out or turn to mud in the next rain. Our guide on gravel types for NC driveways explains the stone names you will hear at the yard.
Step by step: one pothole
Bail or sweep out standing water. Shovel out mud and loose stone from the bottom. You want to reach firm material.
Loosen the sides and bottom with a mattock, and square off the edges a little. New stone keys into a rough, loosened surface. It slides off a smooth, packed one.
Fill the hole in thin layers rather than all at once. Dampen each layer and compact it before adding the next. A deep hole packed in one go will settle and dish again.
Leave the last layer slightly higher than the surrounding drive, then compact it down. Traffic will settle it a little more. A patch that starts flush ends up low and collects water.
Finally, rake the area around the patch so water can run off it, not toward it.
When there are dozens: regrade instead
Filling potholes one at a time works for a few. When the drive is covered in them, patching misses the real problem. The whole surface has lost its shape.
The better fix is to regrade. The surface is loosened to the depth of the deepest holes, so the stone in the ridges and edges can be pulled back into the low spots. Then it is reshaped with a crown, new stone is added where the surface is thin, and the whole drive is compacted.
Done right, that leaves one firm, even surface instead of a drive full of patches. It takes a grader, a box blade or a skid steer, and the right moisture in the stone.
On a long drive, this is a machine job, and it is a core part of driveway repair and grading.
Keeping potholes from coming back
Potholes come back for the reason they started: water stays on the drive. Keep the crown, so rain runs to the edges. Keep the edges low, with no berm of grass or stone to trap water. Keep ditches and pipe inlets clear, so the water that leaves the drive can keep going.
Fix small holes early. A hole the size of a dinner plate is a few minutes with a shovel. Leave it a season and it becomes a crater that needs real work.
Timing helps. Patch when the stone is damp but not soaked or frozen, because that is when it packs firmest.
Slow traffic helps too. Fast tires throw stone and dig holes faster. Our gravel driveway maintenance guide sets out a simple routine through the year.
When a pothole is a sign of something bigger
Some holes are not ordinary potholes. If one comes back in the same spot after a careful patch, look for a cause below the surface. It may be a soft pocket of clay, a seep, or water coming in from the uphill side.
A hole that opens over a culvert is a warning. It can mean the pipe is crushed, rusted through or separating, and the fill around it is washing into it. Filling the hole from the top does not fix that, and the drive can drop suddenly.
A row of sinking spots along one edge can mean the drive is sliding toward the downhill side.
In any of these cases, stop patching and get the drive looked at. Send photos and the address, or call (828) 540-6856.
The Short Version
- Potholes start where water sits. Fix the water as well as the hole.
- Clean out, loosen, refill with damp crushed stone in layers and compact each one.
- Finish the patch slightly high, so it settles level instead of low.
- When the drive is full of potholes, regrade and re-crown instead of patching.
- A hole over a culvert, or one that keeps returning, points to a problem underneath.
Quick Answers
What gravel should I use to fill potholes in a gravel driveway?
Crushed stone with fines, often sold as crusher run or ABC in North Carolina. It locks and binds when compacted. Match your surface stone on top if it is different. Avoid round stone, pea gravel and sand.
Why do potholes keep coming back in my gravel driveway?
Because water still sits there. The crown has flattened, an edge berm traps water, or the ground underneath is soft. Restore the crown and clear the edges and ditches. If one spot keeps failing, look for a soft pocket or a seep below it.
Can I fill driveway potholes with dirt or sand?
It will not last. Dirt turns to mud in the next rain and sand washes out. Use angular crushed stone with fines, put in damp and compacted in layers.
When should I fix potholes in a gravel driveway?
As soon as they appear, while they are small, and when the stone is damp but not soaked or frozen. Spring, after the freeze and thaw, is a good time to go over the whole drive.
See our driveway repair & grading service or call (828) 540-6856.