How Much Does a Gravel Road Cost per Mile in Texas?

National cost guides put a 12-foot gravel road at $5 to $10 per linear foot. On large rural tracts, the same guide lists $21,000 to $65,000 per mile. Another guide prices a 16-foot private road at $10,600 to $33,920 per tenth of a mile. That works out to about $106,000 to $339,000 per mile.

That spread is the real answer. Width, depth, the ground under the road and the haul from the pit set the number. A thin lift of rock on firm, flat ground sits at the low end. A built road with a compacted base, a crown, ditches and culverts sits higher.

These are market numbers, not our price list. Our road building page covers the ranch roads, lease roads, haul roads and access roads we build.

What do national cost guides say a gravel road costs?

The table draws on two national cost guides, both updated within the past year. The road lines come from driveway and rural road data, so a long road scales them up.

On a long road, rock and trucking take the biggest share. The miles multiply every ton.

How much rock does a mile of gravel road take?

A mile is 5,280 feet. A road 12 feet wide with 6 inches of compacted rock holds 31,680 cubic feet, or about 1,173 cubic yards. One guide puts a cubic yard of crushed stone at 1.4 to 1.5 tons. That mile needs about 1,640 to 1,760 tons.

At $18 to $30 a ton for road base, the rock alone runs about $30,000 to $53,000. A dump truck carries 12 to 20 tons, so that is about 80 to 150 truckloads. Delivery at $10 to $25 per ton adds about $16,000 to $44,000. Loose rock packs down under the roller, so the order runs above the compacted volume.

Widen the road to 16 feet and deepen it to 8 inches. The same mile holds about 2,086 cubic yards, or 2,900 to 3,100 tons. The rock alone climbs to about $53,000 to $94,000.

Why do the ground and the haul distance change the number?

The subgrade is the dirt the road sits on. Soft or wet ground has to be cut out and replaced before any rock goes down. Around Fort Worth, the Grand Prairie and Blackland Prairie carry dark, heavy clay soils. The Cross Timbers strip between them is sandy. The federal guide for oil and gas roads on public land says surfacing is not always needed. Soft sections, steep grades, erosive soils and clay soils call for it.

Haul distance works like a multiplier. The guides add about $5 to $10 for each added mile from the pit. That charge repeats on every one of the 80 to 150 loads. A quarry or caliche pit near the route can matter more than the width of the road.

What goes under a gravel road in Texas?

TxDOT’s flexible base spec sorts road rock into types. Type A is crushed stone from a single quarry. Type B is crushed or uncrushed gravel, Type D is crushed concrete, and Type E is caliche. Crushed limestone is the most common rock in Texas, and the spec says clay-heavy gravels are rarely used without stabilization.

The spec compacts base to 100 percent of its maximum dry density, with moisture within 2 points of optimum. Its top grade limits the plasticity index of the fines to 10. A federal gravel roads manual draws the same line between base and surface. Surface gravel wants 4 to 15 percent fines passing the No. 200 sieve. Its plasticity index runs 4 to 12, so the fines bind the surface and shed water. Base gravel wants fewer fines and a plasticity index no higher than 6. Crushed stone locks together better than rounded river gravel.

Cost guides call for at least 4 to 6 inches of rock, placed in layers. Roads that carry trucks get 8 to 12 inches. The federal oil and gas road guide uses 6 inches of crushed aggregate as its example standard. The ground decides the depth more than the budget does.

What do culverts and drainage add?

The federal gravel roads manual repeats an old line: the three most important things in road work are drainage, drainage and drainage. Side ditches carry water along the road and away from it. Culverts carry water under the road where it crosses a draw or a low spot. The oil and gas road guide sets 18 inches as the smallest culvert it allows. It sizes culverts for a 25-year storm and sets ditches at least a foot below the road surface.

National cost guides price culverts or drains at $500 to $2,000 and a drainage system at $2,000 to $5,500. Each crossing on a long road adds its own line. Bigger crossings, dams, ponds and stock tanks fall under site drainage work rather than the road itself.

What does a caliche lease road cost in West Texas?

Texas soil references describe caliche as a hardened layer of calcium carbonate, common across West and South Texas. TxDOT’s spec lists it as its Type E base. Cost guides put caliche at $40 to $150 per ton nationally. In the Permian Basin, the haul sets much of the price. A pit on or near the lease shortens every load.

The state’s extension service explains that in Texas the mineral estate is dominant. An oil company may use as much of the surface as is reasonably necessary. That includes building roads and using caliche found on the lease. A surface use agreement can set where roads go and how the land is restored.

The federal oil and gas road guide gives a picture of the standard. Low-volume resource roads run a 12 to 14 foot travelway with turnouts. Single-lane roads need at least 14 feet, double-lane roads 24 feet, and grades stay at or under 8 percent. Pads and the roads that reach them are part of our oilfield construction work.

Which permits and rules touch a private road in Texas?

A new road onto a state highway takes a TxDOT driveway permit. The property owner applies at the local district office on Form 1058. A mineral owner or lessee can apply too, with Form 2903, and must give the surface owner a copy. A county road tie-in goes through the county, and we point you there.

TCEQ’s construction stormwater general permit covers sites that disturb 1 acre or more. A smaller site inside a larger plan that will disturb an acre counts too. A mile of road 16 feet wide covers almost 2 acres before the ditches. Those sites need a stormwater pollution prevention plan before work starts.

Texas law also requires an 811 notice before machine digging 16 inches or deeper. The notice goes in at least 48 hours ahead, not counting weekends and holidays. The ticket is good for 14 days. If the corridor is still in brush and trees, our guide to land clearing cost per acre covers that first step.

What should a written road quote list?

Two road quotes only compare when they name the same road. Ask each one to list:

• The route, staked, with its length and width
• Clearing and grubbing of the corridor
• Soft spots cut out of the subgrade and replaced
• The base type, its grade and its compacted depth
• The surface rock and its depth
• The crown and the side ditches
• Each culvert, with its size and length
• The pit or quarry and the haul distance
• Who files for the permits that apply

What is the next step for a ranch or lease road in Texas?

Tell us where the road starts and ends and what will drive it. Say what water it crosses. We look at the route and put the quote in writing. Call or text (214) 557-5106, or read more about private, ranch and lease road construction.