How much does a gravel road cost in Louisiana?
A gravel road costs about $1.25 to $4.00 per square foot installed in national cost guides. At the standard 12 foot width, that is $15 to $48 per foot of road. Over a full mile, our math on those rates comes to about $79,200 to $253,440.
Those are published market ranges, not J-Rod’s Dirt Work prices. We do gravel road construction out of Hammond, and the real number comes off your ground. Depth and soft ground decide most of where a road lands in that spread.
What does a gravel road cost per foot and per mile?
Square feet times the installed rate gives you the budget. Angi puts a gravel road at $1.25 to $3 per square foot installed. HomeAdvisor puts a gravel driveway or road at $1.25 to $4.00. Angi gives 12 feet as the standard width for a private road.
| Road length, 12 feet wide | At Angi’s $1.25 to $3 per sq ft | At HomeAdvisor’s $1.25 to $4.00 per sq ft |
|---|---|---|
| 1 foot | $15 to $36 | $15 to $48 |
| 100 feet | $1,500 to $3,600 | $1,500 to $4,800 |
| Quarter mile, 1,320 feet | $19,800 to $47,520 | $19,800 to $63,360 |
| Half mile, 2,640 feet | $39,600 to $95,040 | $39,600 to $126,720 |
| One mile, 5,280 feet | $79,200 to $190,080 | $79,200 to $253,440 |
Our math: the published per square foot rates applied to a 12 foot road. These are not quotes.
HomeAdvisor works one road example itself. A private road a tenth of a mile long (about 530 feet) and 16 feet wide covers 8,480 square feet. HomeAdvisor prices that road at $10,600 to $33,920.
Width moves the bill as much as length. A 16 foot road has a third more square feet than a 12 foot one, and a third more rock.
Angi’s all-material figure for a private road is $3,000 to $23,000 on average, with an average of $9,600. That mixes paved roads in with gravel ones. At Angi’s gravel rates, $9,600 covers about 270 to 640 feet of 12 foot road.
What does the rock for a gravel road cost around Hammond?
Rock is figured from length times width times depth, adjusted for compaction, per the Maine DEP gravel road manual. HomeGuide says one ton covers about 60 to 80 square feet at 4 inches deep.
| Rock depth | Tons per 100 feet, 12 feet wide | Tons per mile, 12 feet wide |
|---|---|---|
| 4 inches | 15 to 20 | about 790 to 1,060 |
| 6 inches | about 23 to 30 | about 1,190 to 1,580 |
| 8 inches | 30 to 40 | about 1,580 to 2,110 |
| 12 inches | 45 to 60 | about 2,380 to 3,170 |
| 16 to 24 inches | 60 to 120 | about 3,170 to 6,340 |
Our math on HomeGuide’s coverage figure. HomeGuide says to order 10 to 15 percent extra for compaction, spillage and settling.
Here is that tonnage at Hammond delivered prices. An online aggregate marketplace listed these starting prices in October 2026.
| Rock, delivered to Hammond | Starting price per ton | Per 100 feet at 4 inches | Per mile at 4 inches |
|---|---|---|---|
| Recycled concrete, 3 inch minus | $36.45 | $547 to $729 | about $28,900 to $38,500 |
| Crusher run, 1 inch minus | $54.00 | $810 to $1,080 | about $42,800 to $57,000 |
| Base course, 1 1/2 inch minus | $59.40 | $891 to $1,188 | about $47,000 to $62,700 |
| Limestone 610, 3/4 inch minus | $64.80 | $972 to $1,296 | about $51,300 to $68,400 |
Source: Aggregate Markets, Hammond product listing, with our tonnage math. Double each rock line for 8 inches of depth.
Depth moves the rock bill more than the choice of rock does. At 4 inches, crusher run alone works out to about $0.68 to $0.90 per square foot. At 8 inches it runs about $1.35 to $1.80, past the $1.25 low end of both installed ranges. A deep road will not price at the bottom of the published ranges.
Coarse 3 inch rock belongs in the base. The Maine manual keeps surface rock at 2 inches and under.
Rock is heavy, and most of it is not from here. A USGS atlas of the Lake Pontchartrain basin found its crushed stone is mostly imported from other regions.
How deep should the rock be on a gravel road?
Here a light drive and a built road part ways. The guides give different depths because they describe different jobs.
- Angi: 4 inches is standard for normal vehicle traffic. Six inches with reinforcement suits heavy vehicles. Angi gives that depth for every road material, not gravel alone.
- HomeGuide: 5 to 6 inches is the minimum for a gravel driveway, laid in layers. Drives that carry trucks or RVs need at least 8 to 12 inches.
- Maine DEP manual: a base layer 12 to 18 inches thick when compacted. A surface layer about 4 to 6 inches thick goes over it.
The Maine manual is a guide for camp roads up north. Its ditches help cut frost heaving and mud season trouble. A full 16 to 24 inch section takes 4 to 6 times the rock of a 4 inch layer.
Ground here brings its own problem: water. On soft ground, road fabric goes down first. The Maine manual calls for at least 6 inches of base over it. We size the base for the trucks the road will carry and the ground under it.
If you only need a drive up to a house, our gravel driveway cost guide prices that job. We build gravel driveways too.
What else adds to the cost to build a road on your property?
The road is more than rock. Cost guides list these lines on top of the installed rate.
| Added cost | Published range |
|---|---|
| Grading or re-sloping for the road (Angi) | $400 to $5,000, $1,900 average |
| Road drainage system, where the slope needs one (Angi) | $2,000 to $5,500 |
| Rock delivery, when not in the price (HomeAdvisor) | about $5 a mile |
| Minimum order for delivery (HomeAdvisor) | a cubic yard or even 20 tons |
Sources: Angi and HomeAdvisor. Angi notes a drainage system may not be needed, depending on the natural slope and layout of the land.
If the road line is grown up, land clearing opens it first. Our land clearing cost guide covers that bill.
The Maine manual says properly built roads sit above the natural ground. Where the road line sits low, we build the bed up with packed fill before any rock goes down. Our fill dirt cost guide prices that dirt.
Ground beside the road that holds water may need land grading as well. Our land grading cost guide covers that part.
Do you need a permit to build a private road in Louisiana?
Angi puts a road permit at $500 to $2,000 nationally. Parish fees are set locally, so ask the office before work starts.
In Tangipahoa Parish, the Permit Office lists a Driveway/Culvert Permit Application and a Land Clearing Permit Application. Ask about the first one if your road will meet a parish road. The Hammond office is at (985) 542-2117.
A flood zone changes the answer. Federal flood rules count filling and grading as development. LSU AgCenter states that all development in a special flood hazard area requires a permit. A raised road bed is fill, and the parish Permit Office does flood determinations.
Utilities get located before any digging. Louisiana law requires notice at least 48 hours ahead and no more than 120 hours, weekends and holidays excluded. Locate requests are free at 811 or 1-800-272-3020.
What does a gravel road cost to keep up?
Angi says a gravel road needs more ongoing upkeep than asphalt or concrete. A private road is also yours to maintain. The local road department keeps up public roads, not private ones.
HomeAdvisor says to top up the gravel at least once a year. Under heavy traffic, it says a few times a year.
The Federal Highway Administration’s gravel road guide recommends about half an inch of crown per foot, near 4 percent. It warns against going past 6 percent. On a 12 foot road, that puts the center 3 inches above the edges.
When the crown flattens, the road holds water. The federal guide says potholes and washboard form from a lack of crown to drain the surface. It calls the roadside ditch the most common drainage feature a rural road needs.
Hammond averages 64.2 inches of rain a year, with measurable rain on 116 days. The federal guide shows a gravel road in a region with more than 60 inches a year. It performs well, the guide says, because an adequate crown and roadside ditches carry the water away.
How do you get a real number for your road?
Send us the address, the length you have in mind and a photo of the road line. Tell us what will drive on it, such as pickups or loaded dump trucks. We will look at the ground and give you a free estimate on the gravel road construction work. Call or text (985) 500-4145, or send the form on our contact page.
Sources used for the ranges above: Angi, HomeAdvisor, HomeGuide, Aggregate Markets (Hammond listing), the USGS Lake Pontchartrain basin atlas, the Maine DEP gravel road manual, the FHWA Gravel Roads Construction and Maintenance Guide, 44 CFR 59.1, LSU AgCenter, the Tangipahoa Parish permit page, NOAA normals via Current Results, Louisiana R.S. 40:1749.13 and Louisiana 811.