A commercial concrete parking lot has to handle trucks, freeze-thaw cycles, and decades of traffic without random cracking or pooling. Portland Concrete pours parking lots sized for the actual loads, jointed where they should crack, sloped to drain, and built on a base that handles the climate. Asphalt lots fail in 5-7 years; correctly-built concrete lots last 30+ with minimal maintenance. Every project starts with a free written estimate.
Asphalt is cheaper to install and faster to fail. Most commercial asphalt lots in Portland need crack-seal at year three, overlay at year seven, and full reconstruction inside fifteen. Concrete costs more up front, lasts three to four times longer, and the maintenance cost over the same period is dramatically lower. The total cost of ownership flips in concrete's favor inside a decade.
What makes concrete lots last is what we get right on day one, subgrade compacted to spec, base layer the right depth and material, slab thickness matched to the heaviest vehicle, control joints in the right pattern so the slab cracks where it is supposed to, and slope that drains rather than ponding.
Same standards across our parking work, the broader commercial concrete service, and the related loading dock projects that often tie into a parking lot. When sections of an existing lot are failing, look at parking lot repair.
Recent work
How it works
How We Build a Parking Lot in Portland
Engineer the lot to load
The slab is sized to the heaviest expected vehicle (delivery trucks, customer cars, fire access), the subgrade is checked against the soil report, and the joint pattern and drainage plan are locked before any excavation.
Excavate the lot to subgrade
The lot footprint is excavated to subgrade, the soil is compacted to the engineered density, gravel base layers are placed and compacted to the right depth, and the surface is brought to plan elevation.
Form, reinforce and slope
Lot perimeters and any internal joints are formed, rebar or mesh is placed where required, the base is final-graded to drainage slope, and the pour layout is confirmed against the joint pattern.
Pour, finish, joint cure
Concrete is placed and screeded flat to the planned slope, finished with a broom or rake for grip, control joints are saw-cut on the engineered schedule, and the lot cures before being released to traffic.
Drainage and joints
Joints Are Where the Cracks Are Supposed to Go
Every concrete slab cracks; the question is where. Done right, joint patterns force cracks into the saw-cuts where they are invisible. Done wrong, slabs crack randomly across the field. Joint spacing, depth and timing of the saw-cut all matter; we engineer all three for the slab thickness and use.
Drainage is the other half. A lot that ponds water freezes that water every winter, and the surface spalls. Slope the lot off itself to catch basins, and the surface stays sharp through decades. Coordinate with adjacent curb and gutter that capture and route the runoff and the wider parking services.
Slab thickness, joint spacing, asphalt comparison and what it takes to build a lot that lasts.
Concrete for long-term lots with trucks, fire access or heavy daily use; asphalt only for short-term lots where lifespan does not matter. The 30-year cost of ownership strongly favors concrete on any serious commercial lot.
Several inches over the prepared base for car-only lots; thicker for truck or fire access. The exact slab thickness comes from the engineered load analysis; we will not pour a thinner slab to save money up front because it will fail later.
Control joints saw-cut at engineered spacing force cracks into the joints where they are invisible. Joint depth, timing and pattern all matter; we engineer all three for the slab thickness and pour conditions.
Yes if it is sloped and drained correctly. Every lot we pour slopes to catch basins or drainage edges, and the slope is verified against the actual conditions, not just the plan. Ponded water freezes and spalls; planned drainage is non-negotiable.
Cars within a few days, trucks longer, full structural strength at the standard concrete cure schedule. The exact return-to-service timeline is in the quote so you can plan operations around the pour.
Client reviews
What Portland Operations Say About Their Parking Lots
Replaced an asphalt lot that had failed in eight years with a concrete lot engineered for our delivery trucks. Three years in, zero maintenance, zero pooling, zero cracks outside the joints.
Z. F.
Property Manager, Portland
★★★★★
Drainage plan was their first conversation, not the concrete. Lot sheds water perfectly through every melt, no ice patches in customer areas. The engineering paid off.
Z. I.
Retail Center Owner, Vancouver
★★★★★
Engineered slab thickness for the actual truck weights, not the cheapest spec. The lot has handled five years of daily semi traffic without a single failure point.
Q. J.
Warehouse Operations, Hillsboro
★★★★★
Pour was sequenced around our tenant schedules. Sections closed only when they had to be, opened back up on time. Real operations awareness, not just concrete crew.
X. F.
Industrial Park Director, Gresham
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