Concrete Driveways in Chalmette, LA

What Does a Concrete Driveway Cost in Chalmette?

A concrete driveway replacement in Chalmette runs $8 to $14 per square foot installed in 2026, which puts a typical 600 square foot driveway between $4,800 and $8,400. A larger 900 square foot job runs $7,200 to $12,600.

Four variables move that range in Chalmette specifically. First, excavation depth: soft organic subgrade often requires removing 8 to 10 inches of material rather than a standard 6. Second, base material: 6 inches of compacted limestone adds cost but is not optional on this soil. Third, reinforcement: #4 rebar costs more per square foot than wire mesh but holds up better where subsidence is ongoing. Fourth, demolition of an existing settled slab adds $1 to $2 per square foot depending on thickness and access.

What Does Chalmette Ground Demand for a Driveway?

The organic silt and soft clay beneath Chalmette driveways compress over time, which is why slabs settle at the apron and along edges first. Addressing that failure mode starts below the slab, not at the surface.

Subgrade and base

Excavation goes down 8 to 10 inches below finished grade. The exposed subgrade is compacted and covered with 6 inches of crushed limestone, placed in two 3-inch lifts and mechanically compacted to 95 percent Proctor density. On sites where the water table is within 2 feet of the excavation floor, a 4-inch perforated drain at the base perimeter carries groundwater away before the base goes in.

Slab and reinforcement

The slab pours at 5 inches using 3500 PSI concrete. Wire mesh alone is inadequate on soft alluvial clay. #4 rebar on 18-inch centers in both directions is the correct reinforcement because it maintains structural continuity when differential settlement begins. The apron, which carries the highest point-load from vehicle tires, receives #4 rebar on 12-inch centers.

Joints and drainage

Control joints are saw-cut every 8 to 10 feet within 12 hours of the pour to direct cracking to predictable lines. The slab is finished with a 1.5 percent cross-slope away from the structure so surface water drains to the street rather than pooling against the foundation.

How Does the Job Run in Chalmette?

A standard Chalmette driveway replacement runs 3 to 5 days from demolition to broom finish. Day one covers saw-cutting, breaking out the existing slab, and hauling debris. Days two and three cover excavation to depth, base placement in two compacted lifts, and rebar installation. The pour happens on day four, with joints cut the same evening. Day five is cleanup and a final check on the drainage slope.

The local ground adds one step that shorter timelines skip: a 24-hour rest after the second limestone lift before the rebar goes in. Compaction on soft subgrade rebounds slightly overnight, and verifying the base has held grade before the steel goes down prevents low spots in the finished slab.

A Recent Driveway Project in Chalmette

Driveway replacement, Chalmette

A 720 square foot driveway had settled 3 inches at the garage apron and cracked through at two control joint lines where the original builder had used wire mesh over uncompacted fill. The existing slab came out in one day. Excavation hit standing water at 28 inches, so a perforated drain was set at the base perimeter before limestone placement began. The finished slab was 5 inches of 3500 PSI concrete reinforced with #4 rebar on 18-inch centers, stepping to 12-inch centers at the apron. Broom finish, control joints cut every 9 feet, completed in 4 days.

Questions Chalmette Homeowners Ask About Concrete Driveways

Do I need a permit for a driveway replacement in Chalmette?

Most driveway work in St. Bernard Parish requires a permit, but thresholds and fees change. Contact the St. Bernard Parish Department of Community Development directly before starting work to confirm what your specific scope requires. A permit protects the homeowner as well as the contractor if the work is ever questioned during a property sale.

Can a settled Chalmette driveway be mudjacked instead of replaced?

Mudjacking lifts a slab by injecting grout beneath it, but it does not address the organic material that caused the settlement. On Chalmette's soft clay subgrade, a mudjacked slab typically re-settles within 2 to 4 years. Full replacement with a compacted limestone base solves the subgrade problem rather than deferring it.

How long before I can drive on a new slab in Chalmette?

Foot traffic is safe after 24 to 48 hours. Vehicle traffic requires a full 7 days of cure time. The concrete reaches its design strength of 3500 PSI at 28 days. Parking heavy vehicles, campers, or equipment on the slab before 28 days risks surface damage and is not covered by any warranty.

To get a written estimate for your Chalmette driveway, call or use the contact form. Estimates are free, include a site visit, and carry a line-item breakdown so you can see exactly what the subgrade and reinforcement specs add to the job cost.