Excavation
Dirt Hauling in Wilsonville, Oregon
Cojo
July 9, 2026
6 min read
Dirt hauling in Wilsonville means moving excess soil off a jobsite -- or bringing clean fill in -- across a fast-growing city straddling the I-5 corridor south of Portland, where valley clay, new construction, and easy highway access shape the work. Whether you are prepping a lot in a newer subdivision, grading a commercial or industrial pad, or working near the Willamette River, the spoil has to be loaded, hauled, and disposed of properly. Wilsonville's location on I-5 is a genuine advantage for trucking. This guide covers how dirt hauling in Wilsonville works and what it costs.
Wilsonville sits right on I-5 at the Clackamas-Washington county line, and its layout affects every haul:
The soil and lot on your specific site decide truck sizing and trip count, but Wilsonville's highway access often keeps haul logistics simpler than in older, tighter cities. Flat ground and wide new-development streets mean full-size dump trucks can usually get close to the work, load fast, and reach the freeway in minutes. The master excavation guide covers the earthwork; this page focuses on moving the dirt.
The ground under most of Wilsonville is Willamette Valley clay -- the same fine-grained soil that runs through the whole valley floor. It cuts firm and loads clean in the dry months, but once the winter rains soak in it turns sticky and heavy. Saturated clay weighs more per yard, so trucks carry fewer yards to stay legal on axle weight, and the material clings to buckets and truck beds and tracks out onto the road.
On the lower ground closer to the Willamette River, a seasonal high water table can seep into a deeper cut, which slows the work and sometimes calls for dewatering -- pumping the water out before the machine can finish the bottom. All of this is why the roughly May-through-October dry-season window is the right time for big earthmoving here. Wet valley clay does not stop a Wilsonville job, but it makes it slower and heavier, so dry-season scheduling holds the cost down.
Excess soil must be disposed of responsibly. Typical paths:
Most residential Wilsonville spoil is clean clay, but commercial and industrial sites can carry contamination worth testing before hauling to a clean-fill site. Clean fill and contaminated soil go to different places at very different prices, so on a former industrial parcel it pays to check the site history and test before committing trucks to a clean-fill yard.
Many Wilsonville jobs move dirt both ways -- export the spoil from a dig, then import clean structural fill or gravel for the pad and backfill. On the commercial and industrial pads common here, imported structural fill and gravel volumes can be significant. Balancing cut and fill on site cuts truck trips.
A lot of Wilsonville work is not a backyard dig -- it is a commercial or industrial building pad. Those pads have to be built to engineered specs: soft native clay stripped out, then clean structural fill placed in thin layers, or lifts, each one compacted to a target density before the next goes down. Valley clay is not a good structural material on its own, which is why these jobs import large volumes of gravel and select fill and haul the native clay away.
That two-way movement -- clay out, engineered fill in -- is the real cost story on Wilsonville commercial work, and it is why volumes and truck counts run high. A geotechnical report usually sets the fill spec and compaction target, and the earthwork crew builds to it. This is a different scale of dirt hauling than a residential lot, and it rewards good haul-route planning and steady truck cycling.
Before dirt moves, call 811 for utility locates -- Oregon law requires marking existing lines before any dig. Then confirm the permits the job needs:
Hauling is priced by the load or hour, plus disposal fees. These are planning baselines.
| Item | Baseline Range |
|---|---|
| Dump truck haul-off, per load (10-14 cu yd) | $250 -- $750+ per load |
| Dump / disposal fee, per load | $75 -- $300+ per load |
| Excavator + operator, hourly (loading) | $150 -- $350+ per hour |
| Fill dirt, delivered, per cu yd | $20 -- $75+ per cu yd |
| Crushed gravel, delivered, per cu yd | $45 -- $110+ per cu yd |
| Mobilization fee | $250 -- $800+ flat |
Easy I-5 access helps hold haul costs toward the baseline, but volume changes everything. A commercial pad that exports thousands of yards of clay and imports thousands of yards of structural fill runs well past the residential baseline into a different tier entirely. Wet clay, a high water table near the river, or a contaminated-soil finding can each move the number up again. Wet clay hauls heavy and larger commercial jobs move more volume -- so a Wilsonville quote depends on the specific job. Hauling often ties into broader Wilsonville site prep.
Dirt hauling in Wilsonville comes down to valley clay, project scale, and the advantage of I-5 access. Balance cut and fill, plan fill volumes on commercial pads, and work the dry season where you can. Cojo is a CCB licensed and insured Oregon excavation contractor, Hood River based and serving the I-5 corridor and statewide. See our excavation services or request a free estimate.
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