Driveway repair in Old Town Wilsonville is a base-evaluation job before it is a surface job. The historic core east of I-5 is pre-1970 single-family stock, which puts the typical driveway on its second or third surface lift over a base that was placed in an era of looser compaction standards and shallower aggregate sections. The repair decision -- crack-seal, overlay, or full replacement -- depends almost entirely on what the base evaluation shows, not on what the surface looks like from the curb. Cojo approaches Old Town repair work with a proof-roll or core sample on the front end so the recommendation matches the actual subsurface condition rather than a guess.
Why Old Town Driveway Repair Is Different From Newer Wilsonville
Most Wilsonville driveway repair work sits in 1980s, 1990s, and 2000s subdivisions where the original builder base is documented, compaction was tested, and the failure mode is predictable. Old Town is older than any of that. The original driveways went in before modern subgrade specifications, the aggregate base is often shallower than current code, and decades of root intrusion from mature canopy have shifted the supporting soil structure under the slab. The crack pattern at the surface is a symptom, not a diagnosis.
That changes the repair conversation. A contractor who quotes a flat per-square-foot overlay price without proof-rolling the base is selling against a surface failure that may reopen within two years if the base is the actual problem. A competent Old Town bid starts with a base inspection and includes a recommendation that either confirms overlay will work or escalates to full replacement with Wilsonville driveway excavation under the slab.
The Crack-Seal, Overlay, and Full-Replacement Decision Tree
Three repair paths cover most Old Town driveways. Crack-seal-only applies when the surface has linear or transverse cracks but the slab is structurally intact -- no alligator cracking, no settlement, no pumping at the wheel paths. This is the cheapest fix and buys two to four more seasons before the next decision.
Overlay applies when the surface is degraded -- widespread crack patterns, raveling, oxidation, but the base proof-rolls clean and the existing slab is still supporting load. Mill-and-overlay at 1.5 to 2 inches over a tack coat is the standard scope, and the surface life on a well-installed overlay over a good base runs 12 to 18 years. Cost lands in the mid range of the Wilsonville asphalt paving cost band.
Full replacement applies when the base is the problem -- pumping subgrade, settled fill, or root-heave from mature canopy that has displaced the aggregate. This is the most expensive path, but it is the right call when the alternative is paying for an overlay that fails inside three years. Cojo will not sell an overlay over a failed base.
Original-Builder Base Evaluation in Pre-1970 Stock
The proof roll is the cheapest piece of due diligence on an Old Town repair job, and it changes the recommendation more often than any other field test. A loaded truck rolled across the slab at a slow speed will reveal pumping under the surface where the base has lost support. Visible deflection in the rolling area means the slab is no longer transferring load to the aggregate -- that is a full-replacement signal, not an overlay candidate.
Core sampling is the next-step test when the proof roll is ambiguous. A 4-inch core through the slab and base shows aggregate depth, base material gradation, and any soft layers beneath. Pre-1970 Old Town driveways often show 3 to 4 inches of aggregate where modern spec would call for 6 to 8 inches, and that depth deficit is the single most common reason an Old Town overlay fails before its time.
Industry Cost Picture for Old Town Driveway Repair
Old Town repair pricing spans a wider range than newer-build repair because the base evaluation can flip the recommendation from a low-cost overlay to a full-replacement job. The range below is the realistic spread for a typical 400-to-700 square foot Old Town driveway.
Industry Baseline Range
| Scope | Cost Range | Typical Total |
|---|---|---|
| Crack-seal only, linear and transverse cracks | $0.80 to $2.50 per linear ft | $300 to $1,200 |
| Mill-and-overlay 1.5 to 2 inches, intact base | $5 to $10 per sq ft | $2,400 to $7,500 |
| Full replacement, slab and base | $9 to $16 per sq ft | $5,000 to $14,000 |
| Root-heave area repair, partial slab | $12 to $22 per sq ft | $1,500 to $5,000 |
| Proof-roll plus core sample | flat $250 to $600 | per scope |
Current Market Reality
Old Town repair bids that look unusually cheap on a clearly degraded driveway almost always skip the base evaluation and quote a surface-only overlay. That works when the base is sound, and it fails when the base is the problem -- which is the most common case in pre-1970 Wilsonville. The honest bid prices the proof roll, prices the overlay assuming the proof roll passes, and writes the full-replacement contingency openly so the homeowner is not surprised when the field test forces the escalation. Add to that the May-to-October Willamette Valley paving window forcing the work into a six-month corridor with rain-forecast scheduling, and the realistic Old Town repair quote sits well above floor-pricing offers from contractors who do not run the base test.
Vetting an Old Town Repair Contractor
Ask any bidder three questions. First, do you run a proof roll on pre-1970 Wilsonville driveways before recommending overlay versus replacement -- a "no" is a stop signal. Second, what is your decision criterion for escalating from overlay to full replacement -- if the answer is vague, the contractor is selling a flat menu rather than a real diagnosis. Third, what is the contingency line on the bid if the proof roll fails -- a competent bid writes that contingency in advance so there is no day-of surprise.
Cojo runs Old Town repair work with a proof roll on the front end, a written core-sample report when the surface signals are mixed, and a contingency line that escalates cleanly to Wilsonville driveway excavation when the base is failed. For surfaces that come back clean enough to stay on a sealcoat schedule rather than escalating to repair, the Old Town sealcoating playbook applies. Ongoing asphalt maintenance on a 24-to-36-month sealcoat rotation is the protective cycle for a freshly overlaid Old Town driveway. The Wilsonville driveway repair service page covers the city-level frame. Ready to put a base evaluation on an Old Town driveway? Schedule an Old Town driveway walk and Cojo will roll the slab, report the result, and write a number that matches the actual condition.