Asphalt
Alligator Cracking Repair in Canby, Oregon
Cojo
June 15, 2026
7 min read
Alligator cracking repair in Canby almost always means full-depth repair, not a surface patch. That interlocking, scaly crack pattern is fatigue cracking — it tells you the base or sub-grade under the pavement has lost strength and is flexing under traffic. On Canby's seasonally wet Willamette Valley clay, the most common cause is water trapped under the asphalt. Sealcoating or a thin overlay over alligatored pavement buys you one wet season at most. The honest fix is to saw-cut the failed area, dig out the bad base, rebuild it, and pave back to grade.
Alligator cracking — sometimes called fatigue or crocodile cracking — shows up as a network of connected cracks that look like reptile skin. It starts in the wheel paths, where loads are heaviest, and spreads outward. Unlike a single straight crack, this pattern is a structural alarm: the layers below the surface can no longer carry the load without bending.
In Canby, sitting on the prairie south of the Willamette and Molalla rivers in Clackamas County, the ground holds water. Local soils run heavy to silt and clay, and clay swells when wet and shrinks when dry. That movement, combined with a high winter water table along the river bottoms, leaves the base soft right when traffic is pressing down on it. Add a few freeze nights and you get the seasonal flexing that fatigues asphalt from the bottom up.
Alligator cracking is a bottom-up failure. The surface you see cracking is the last layer to give, not the first. That is why surface treatments do not hold:
For the full picture on reading these patterns, see our pavement distress diagnosis guide and the breakdown of what causes alligator cracking.
Done right, alligator cracking repair in Canby follows a sequence that gets to the actual problem:
This is what separates a repair that lasts from one that re-cracks. For deciding how deep to go, read our guide on full-depth vs. surface repair.
Cost depends on how much area has failed, how deep the bad base goes, and how easy the lot is to access for trucks and equipment.
| Repair Scope | What's Involved | Relative Cost |
|---|---|---|
| Small isolated patch | Saw-cut, dig, rebuild one wheel-path area | Lowest |
| Multiple failed areas | Several full-depth patches across a lot | Moderate |
| Widespread failure | Most of the surface alligatored; reclamation or full rebuild | Highest |
Asphalt and aggregate prices move with the index and with trucking costs, and Oregon's tight May-to-October paving window means good crews book out early in Clackamas County. A bid that quotes a cheap overlay over alligatored pavement is almost always the most expensive option once you pay to do it again next year.
If more than roughly a quarter of a parking lot or driveway shows alligator cracking, spot repairs stop making sense. At that point full-depth reclamation — grinding the old pavement and base together and rebuilding — or a complete tear-out is usually the better value. We will give you a straight read on which situation your Canby pavement is in.
If you are seeing scaly, interlocking cracks on a Canby driveway, lot, or private road, contact Cojo for a Canby assessment. We will tell you whether you need a patch or a rebuild before you spend a dollar, and our asphalt repair services cover Canby and the rest of Clackamas County.
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