How long before you can drive on new concrete?

By CO Springs Concrete · Updated September 2026 · 9 min read

Those are published guidelines, not a promise for your slab. Cold nights, hot wind and the mix all change the clock, so your contractor's instructions for your mix and weather govern. On every job, we give homeowners cure instructions and dates.

Here is what to expect on concrete pour day for a new concrete driveway or patio, stage by stage.

What happens on pour day?

Here is the sequence, with a short clip from one of our jobs at each stage.

1. Compact the base

We excavate and compact the base. Colorado's DOT asks for the same on public sidewalks: a foundation shaped and compacted to a firm, even surface, then moistened right before the concrete goes in.

2. Set the steel

We set rebar sized to the job, held up on chairs so it sits in the slab instead of on the dirt. NRMCA notes that reinforcement such as wire mesh will not stop cracking, though it helps keep cracks from opening up. Joints control where cracks form; more in why concrete cracks.

3. The truck arrives

Once the trucks roll, the day runs on a clock. NRMCA calls for trucks to discharge right away and says adding water to concrete more than 1½ hours old should be avoided.

Extra water on site makes concrete easier to move but can leave a weak surface, which NRMCA ties to scaling. We use an air-entrained exterior mix suited to freeze-thaw; its tiny air bubbles give freezing water room to expand. If your old driveway is coming out, plan to park on the street for the full wait.

4. The pour

Concrete goes into the forms over the steel, here through a pump. Temperature sets the pace. NRMCA's rule of thumb is that a 20°F drop in concrete temperature roughly doubles setting time, while hot concrete sets quicker and has to be finished faster.

5. Screed it flat

Screeding pulls a straightedge across the forms to strike off extra concrete. NRMCA says bull floating should follow promptly, then finishing waits until bleed water, the sheen that rises to the top, has come up and gone. It warns that on dry, windy days the surface can look dry while the slab is still bleeding.

6. Finish by hand

We finish by hand with trowels and edgers. NRMCA warns against overworking the surface, which reduces entrained air near the top, and against sprinkling water on the slab to ease finishing.

What happens after the pour?

7. Saw-cut the control joints

Concrete shrinks as it hardens and dries. Control joints are planned cracks: grooves that give the slab a straight place to crack.

Timing is the hard part. NRMCA gives 4 to 12 hours after finishing for conventional saw cuts, and 1 to 4 hours for early-entry saws. If the blade ravels the edges, the cut has to wait; wait too long and the slab can crack on its own first. Weather and mix move that window, per a Michigan Concrete Association guideline, so a cut can land the next morning, as here.

8. Cure it

So how long does a concrete driveway take to cure? Curing means keeping new concrete moist and warm so it keeps gaining strength. NRMCA says curing should start right after finishing and typically last 3 to 7 days, and that concrete left to dry out can lose as much as half its potential strength. It also recommends keeping placed concrete above 50°F.

NRMCA's curing sheet, which draws on ACI 308, sorts methods into two groups:

• Adding water: continuous fogging or sprinkling, or burlap and cotton mats kept wet. Alternating wetting and drying is not acceptable curing.
• Holding water in: plastic sheeting at least 4 mils thick, or a liquid membrane curing compound sprayed on once the surface sheen is gone.

Season matters, since water curing is not recommended when freezing is near. Your cure instructions say which method your slab is on and what you need to do.

How long before you can drive on new concrete?

Here is how published concrete cure time guidance lines up for normal conditions. Cold weather stretches every line.

When can I walk on new concrete?

On public sidewalks, Colorado's DOT keeps pedestrians off for the whole curing period. For your slab, walk on it when your contractor says the surface is ready, and stay off plastic sheeting or wet burlap so you do not disturb the cure.

Cars versus heavy loads

State paving specs use a similar rule: Iowa's DOT requires standard pavement to reach both a minimum age of 7 days and a tested strength of 3,000 psi before opening. No guidance we checked gives a calendar day for an RV, a loaded trailer or a delivery truck. Ask for that date in your cure instructions, and mention an RV at the estimate.

What should you do in the first week?

1. Follow your dates. Keep cars, bikes and people off until the dates you were given.
2. Keep a wet cure evenly wet. If your instructions say to water the slab, keep it damp rather than soaking it once and letting it dry.
3. Check sprinklers. A zone that soaks one corner while the rest bakes is the wet-dry cycling curing guidance warns against. Adjust it or ask us.
4. Put covers back. If wind lifts plastic or burlap, lay it flat and weigh it down.
5. Keep pets and kids off until your walk date. Prints in fresh concrete stay.
6. No deicers the first winter. NRMCA recommends avoiding deicing chemicals on new concrete in its first winter and using clean sand for traction. It also rules out ammonium sulfate, ammonium nitrate and magnesium-based deicers.
7. Do not seal it yet. Michigan Concrete Association driveway guidelines put a penetrating sealer at 30 days after placement, and the Illinois Ready Mixed Concrete Association adds a dry surface and temperatures above 55°F. Details are in sealing concrete before winter.

Can you pour concrete in cold weather in Colorado?

Yes, with planning. Federal Highway Administration guidance, based on ACI 306, uses 40°F as the cold-weather threshold: below it, fresh concrete sets more slowly, takes longer to finish and gains strength less rapidly. The National Weather Service in Pueblo lists Colorado Springs' average first fall freeze as October 2 and average last spring freeze as May 8, with freezes on record as early as September 1 and as late as June 18.

The stakes are real. NRMCA says fresh concrete freezes below about 25°F and can lose more than half its potential strength. It says to protect concrete from freezing until it reaches 500 psi, about two days after placement.

Cold-weather protection, per NRMCA:

• No concrete on frozen ground. Clear snow and ice, and keep contact surfaces above freezing.
• Insulated blankets, or straw covered with plastic, ready before the pour. Corners and edges lose heat fastest.

Colorado's DOT holds its own paving to this: when air is expected to drop below 40°F within three days, pavement temperature is monitored and kept at or above 40°F until the concrete reaches 2,000 psi. For you, a late-fall or early-spring pour can mean a longer finishing day, a later saw cut and a longer wait to drive.

What about hot, dry and windy days?

Colorado Springs sits at 6,035 feet, according to the City. Colorado State University describes the state as dry, with low humidity, plenty of sunshine and daily temperature swings of 30°F or more across much of Colorado. Those match the factors in the ACI 305R definition of hot weather that NRMCA cites: high air and concrete temperatures, low humidity, high wind and solar radiation. NRMCA notes they can occur any time of year in arid climates.

The pour-day risk is plastic shrinkage cracking: shallow, roughly parallel cracks that form when the surface dries faster than bleed water replaces it. NRMCA lists wind over 5 mph, low humidity and high temperatures as the triggers. Its precautions:

• Dampen the subgrade and forms beforehand.
• Use windbreaks, sunshades, fog sprays or evaporation retarders when conditions call for them.
• Start curing as soon as finishing is done, and continue at least 3 days.

NRMCA also says concrete cured hot early on ends up weaker later than the same concrete cured around 70°F, and a hot day followed by a cool night can cause thermal cracking.

Want to see these stages in motion? Watch our work in motion. If you are planning a driveway or patio, book a free on-site estimate. You get a clear written quote, and the crew that measures the job pours it.