Do you work in St. Tammany Parish as well as Jefferson and Orleans?

Yes. New Orleans Concrete Contractors serves Slidell, Mandeville, and Covington in St. Tammany Parish alongside Jefferson, Orleans, St. Charles, and Plaquemines parishes. Permit requirements and parish review processes differ between them, so the scope review covers applicable parish requirements before work begins.

What causes driveways to settle and sink in the New Orleans area?

Settlement on the south shore is caused by soft alluvial clay and organic silt consolidating under load, with the water table typically sitting 2 to 5 feet below grade. Fill placed during original construction compresses over time. Correcting the subgrade before the new pour, not just replacing the slab surface, is what prevents the same failure from recurring.

What concrete mix do you use for residential driveways?

Residential driveways get 3500 PSI concrete as a standard minimum, poured at 4 inches over 4 to 6 inches of compacted limestone base. Sites with saturated subgrade or heavier vehicle loads step up to 4000 PSI and additional base depth. The mix and thickness are confirmed after the site visit, not before.

How long before a new concrete driveway can take vehicle traffic?

Foot traffic is safe after 24 to 48 hours. Passenger vehicles can use the surface after 7 days. Full compressive strength is reached at 28 days, after which heavier loads are appropriate. These timelines apply to standard mixes in typical Greater New Orleans temperatures and do not compress based on schedule.

Do your projects include commercial parking lots and industrial slabs?

Yes. Commercial work includes parking lots, loading dock aprons, industrial floors, and ADA sidewalk and curb work. Commercial slabs are typically specified at 4000 PSI or higher, with 6-inch minimum thickness for vehicle loading, rebar sized and spaced to the load requirement, and joint placement designed to the panel layout.

Concrete Projects Across Greater New Orleans

The profiles below represent concrete work completed across Greater New Orleans since 2016, spanning residential driveways, commercial slabs, and structural repairs in Jefferson, Orleans, St. Tammany, St. Charles, and Plaquemines parishes. Each project profile lists the site condition, the specification chosen in response, and the finished scope, because the ground here changes what the work requires. No customer names, no street addresses: real contractor portfolios omit both.

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Key facts

Projects completed across 17 cities in Jefferson, Orleans, St. Tammany, St. Charles, and Plaquemines parishes
Standard residential slab: 4 inches of 3500 PSI concrete over 4 to 6 inches of compacted limestone base
Reinforcement on most residential slabs runs #3 rebar on 18-inch centers with 6-mil poly vapor barrier
Control joints cut within 12 hours of pour, spaced every 10 feet on driveways and flatwork
Subgrade water table on the south shore typically sits 2 to 5 feet below grade, requiring base correction on most jobs

What kinds of concrete projects has New Orleans Concrete Contractors completed?

The six profiles below span driveways, patios, commercial parking, slabs, steps, and repair work. Site conditions vary significantly across the metro, from saturated clay in Chalmette to sandy subgrade in Slidell, and each profile names the ground problem and the spec it produced.

Driveway Replacement, Old Metairie

A 680 square foot residential driveway where the original 1970s slab had settled 3 inches at the garage apron, caused by consolidation of fill placed during original construction. The crew removed the existing slab to subgrade, excavated an additional 4 inches of soft material, and compacted 6 inches of crushed limestone in two lifts verified with a plate compactor. The finished slab is 4 inches of 3500 PSI concrete reinforced with #3 rebar on 18-inch centers over 6-mil poly, with control joints at 10-foot intervals. Broom finish. Four days from demolition to handover.

Patio and Pool Deck, Harvey

A 920 square foot combination patio and pool surround on the West Bank where the existing subgrade was saturated clay with standing water present at 18 inches below grade. Base preparation required removal of 8 inches of native material, installation of a perforated drain line at the low corner, and replacement with 6 inches of compacted limestone before forming. The slab poured at 4 inches of 4000 PSI concrete with fiber mesh reinforcement and a light broom finish around the pool edge for slip resistance. The stamped border section used a slate pattern in a charcoal release.

Commercial Parking Lot, Kenner

A 14,000 square foot concrete parking lot for a light-industrial tenant in Kenner, specified to carry loaded delivery trucks up to 26,000 pounds GVW. Jefferson Parish required a 6-inch minimum slab thickness for commercial vehicle loading at this site. The subgrade was proof-rolled and two weak spots were undercut and replaced with compacted limestone before paving. The finished pour used 4000 PSI concrete with #4 rebar on 24-inch centers, expansion joints at 20-foot intervals, and a broom finish with painted traffic markings. Poured in three sections over five days to manage joint placement.

Concrete Steps and Stoop, Arabi

Four-step front entry stoop in Arabi, St. Bernard Parish, where the original brick steps had separated from the house foundation by 2 inches due to subgrade settlement under organic fill. The existing steps were demolished and removed. A new concrete footing was poured 12 inches deep to reach stable material, and the steps were formed and poured monolithically with the landing at 4 inches thick, 3500 PSI mix. Risers set at 7 inches, treads at 11 inches. Broom finish with a tooled edge. Completed in two days.

Driveway Apron and Sidewalk Repair, Slidell

A 240 square foot driveway apron replacement and 60 linear feet of sidewalk panel replacement in Slidell, where two panels had lifted 1.5 inches from pine root growth beneath the base. Root material was cut back and removed 18 inches past the affected panels. New base compacted to 4 inches of crushed stone. Replacement panels poured at 4 inches of 3500 PSI concrete to match existing grade, with control joints aligned to the surrounding panels. St. Tammany Parish right-of-way requirements applied to the sidewalk panels; the owner confirmed permit status with the parish prior to work.

Garage Floor Resurfacing, Gretna

A 480 square foot garage floor in Gretna where the existing slab had surface scaling across 60 percent of the area from moisture cycling through a poorly sealed original pour. The surface was ground to remove loose material, and low spots were filled with a polymer-modified concrete repair mortar rated at 5000 PSI compressive strength. A 3/8-inch bonded concrete overlay was applied across the full slab, finished with a light trowel and sealed with a penetrating silane-siloxane sealer. The garage returned to vehicle use in 7 days.

Common questions

Do you work in St. Tammany Parish as well as Jefferson and Orleans?: Yes. New Orleans Concrete Contractors serves Slidell, Mandeville, and Covington in St. Tammany Parish alongside Jefferson, Orleans, St. Charles, and Plaquemines parishes. Permit requirements and parish review processes differ between them, so the scope review covers applicable parish requirements before work begins.
What causes driveways to settle and sink in the New Orleans area?: Settlement on the south shore is caused by soft alluvial clay and organic silt consolidating under load, with the water table typically sitting 2 to 5 feet below grade. Fill placed during original construction compresses over time. Correcting the subgrade before the new pour, not just replacing the slab surface, is what prevents the same failure from recurring.
What concrete mix do you use for residential driveways?: Residential driveways get 3500 PSI concrete as a standard minimum, poured at 4 inches over 4 to 6 inches of compacted limestone base. Sites with saturated subgrade or heavier vehicle loads step up to 4000 PSI and additional base depth. The mix and thickness are confirmed after the site visit, not before.
How long before a new concrete driveway can take vehicle traffic?: Foot traffic is safe after 24 to 48 hours. Passenger vehicles can use the surface after 7 days. Full compressive strength is reached at 28 days, after which heavier loads are appropriate. These timelines apply to standard mixes in typical Greater New Orleans temperatures and do not compress based on schedule.
Do your projects include commercial parking lots and industrial slabs?: Yes. Commercial work includes parking lots, loading dock aprons, industrial floors, and ADA sidewalk and curb work. Commercial slabs are typically specified at 4000 PSI or higher, with 6-inch minimum thickness for vehicle loading, rebar sized and spaced to the load requirement, and joint placement designed to the panel layout.

Last updated August 5, 2026

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