Patching and Pothole Repair in Denver, CO

Asphalt patching cuts out a failed piece of pavement and rebuilds it, from a single pothole to a saw-cut section that goes down through the base, and it is the right driveway repair whenever the support under the surface, not just the surface itself, has given way. In the Denver area that support fails for predictable reasons. Meltwater from sunny winter afternoons gets into the base about 137 days a year and refreezes overnight, clay-rich soils drain slowly, and a loaded truck finishes the job on a section that has already lost its footing. A patch that treats only the hole, and not the water and base beneath it, tends to reopen along the same outline.

A pothole is the last stage of a longer process. Cracks let water into the aggregate base, freeze-thaw cycles loosen it, and traffic pumps fines out until the surface has nothing firm to rest on. Pavement engineers describe alligator cracking, the small interlocking plates that often come first, as fatigue failure under repeated loads, and they list poor drainage among the causes of the weak support behind it. The soils make that support hard to keep. The soil series NRCS named for Denver is clay loam over clay with slow to very slow permeability, so water that reaches the base tends to stay.

The city's own street crews show the seasonal logic. Denver's transportation department sends crews out daily, as weather allows, to find and patch potholes, and in winter it fills them with temporary cold asphalt to keep a street safe until warm weather allows a permanent repair. A driveway works the same way. Cold patch tamped into a January pothole is a plug that keeps a tire out of the hole; the permanent driveway repair is hot mix placed when the pavement is warm and dry, generally the same months that suit sealing.

Permanent patches come in two depths. A surface patch replaces raveled asphalt over a base that is still firm. A full-depth patch cuts the failed area out along straight saw lines, removes the wet or contaminated base, rebuilds and compacts it, and places hot mix in layers. Over clay that has been heaving, a patch may crack again at its edges if water keeps reaching the soil, so downspouts and sprinkler overspray near the repair should be dealt with at the same time. Once a patch cures, the whole driveway can be sealed as one surface; see driveway sealcoating for timing.

Published prices follow the method. HomeAdvisor's 2026 guide lists cold patches at $100 to $200 and hot patches at $250 to $500, and Angi's August 2026 guide puts pothole repair at $2 to $5 per square foot, with saw-cut or infrared methods up to about $500 per patch. Several failures clustered in one area can make an overlay the better value, which the cost page compares.