Joints should also be spaced 2-3 times in feet the thickness of the concrete: so a 4 thick driveway should have joints no farther than 8- 12 feet, and e) A simple broom finish for sufficient traction We also found out that concrete can now be made to match any almost any color desired.he existing driveway was about 50 years old and had some huge cracks in it. Last summer we installed a new 24-foot wide x 44-foot long driveway in the Washington DC area. We hired a concrete contractor to do the job.