Driveways and Pads That Drain and Hold Up

What goes into a driveway built right

A driveway is a small piece of road. The same rules that apply to highway construction apply at a smaller scale in your front yard. You need a subgrade that is compacted and stable. You need a base course that spreads load and drains water. You need a surface that handles the use. You need a crown or a cross slope so water runs off instead of sitting on top. You need ditches or swales on the sides so the water has somewhere to go. And on most country driveways in this area, you need a culvert sized for the runoff that crosses the property line at the road.

We build all of that under one roof. We cut the route, set the culvert, prep the subgrade, lay the base, and finish the surface. The driveway and the pad it leads to are part of the same job, so the grades match, the drainage works together, and you do not end up with a hump where the driveway meets the pad because two different contractors did not talk to each other.

Driveway types we build

Limestone driveways. The workhorse in rural Acadiana. Crushed limestone or crushed concrete laid over a compacted subgrade, crowned and graded to drain. Holds up to passenger vehicles and the occasional truck, easy to refresh with a top dressing every few years. We build long ones for rural homesites, short ones for shop entries, and everything in between.

Concrete driveways. Poured concrete on a prepped base. More expensive up front, but the longest life and the cleanest look. We do residential drives, commercial approaches, and parking aprons.

Asphalt-ready bases. If you want asphalt, we build the subgrade and base course so the paver can lay a clean surface that does not crack the first winter.

Equipment and RV pads. Hard surfaces for trailers, RVs, boats, tractors, and equipment. Sized for the load and drained so you are not parking on a swamp.

Turnarounds and parking aprons. Where the driveway widens at the house or shop. We size them for actual use so you can turn a truck around or park three vehicles without driving on the grass.

The culvert decision

If your driveway crosses a ditch, you need a culvert. The pipe size matters because it has to pass the runoff that ditch handles during a heavy rain. Undersize it and the road backs up over your driveway in a storm. Oversize it and you waste money on pipe. Around here, most residential drives use 15 to 24 inch corrugated metal or plastic pipe, sometimes larger on properties with significant upstream drainage. We look at the ditch, look at what the ditch is fed from, and size the culvert so it works.

Setting the culvert is its own piece of work. The pipe has to sit at the right depth, with the inlet and outlet protected so they do not erode, with the headwalls or rip-rap that keep the bank from washing in, and with the fill compacted around and over the pipe so the driveway does not settle on top of it. We do all of that as part of the driveway job.

The subgrade and base under it

A limestone driveway is only as good as what is under the limestone. We strip the topsoil and the soft organic layer off the route, dig down to firm subgrade, and bring it up with compacted fill if needed. The base course goes down in lifts, typically eight to ten inches of crushed limestone or crushed concrete depending on the use. Each lift gets compacted. The crown gets shaped so water sheds to the sides instead of running down the centerline cutting a channel.

For a concrete driveway, the base is similar but the surface goes down differently. The subgrade gets compacted, a base course of limestone or sand gets laid and compacted, and then the concrete gets poured with rebar or fiber mesh per the design. Edges get thickened where loads concentrate.

Crown, cross slope, and how water moves

A driveway that sits flat across its width holds water in the wheel tracks. Within a season, those tracks get deeper, the surface gets washboarded, and the limestone migrates to the low spots. We crown driveways so the surface falls about a quarter inch per foot from the centerline to the edges. That seems small. It is the difference between a driveway that lasts a decade and one that needs constant top dressing.

On a driveway running along a slope, we sometimes cross-slope instead of crown, draining all the water to one side into a swale. The choice depends on the layout. Either way, water has to leave the driveway surface fast.

Long country driveways

Plenty of rural properties around Carencro, Scott, and out toward the country have driveways that run several hundred feet from the road to the house. Those drives need a base wide enough for vehicles to pull off and pass, drainage that works across the whole length, and a thickness that handles the trucks that show up for deliveries. We have built drives that run a quarter mile, with multiple culvert crossings, and built them so they do not need a yearly rescue.

Pads we build under or beside the driveway

Most driveways connect to a pad. A garage slab pad, a shop pad, an RV pad, a boat trailer pad, a hardstand for a trailer or equipment. We build the pad to the same standard as the driveway, with compacted subgrade, base course, and the right surface for the use. Limestone for everyday parking and trailer storage. Concrete for shops, garages, and anything that has to be clean. Pads get crowned or sloped so water leaves the surface.

Maintenance you can plan around

Limestone drives need a top dressing every two to five years depending on use and weather. Drains and ditches should get checked yearly so they do not silt up. Concrete drives need joints sealed if they open up. We tell you what to expect during the walkthrough so you are not surprised three years in.

Common questions about driveways & pad construction