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Serving Rialto, CA and surrounding areas. (909) 546-5231
The asphalt is only as good as what sits underneath it. We grade and excavate to a solid, level, properly drained base so your new driveway or paved surface holds up through Inland Empire summers and wet winters alike.
Grading and excavation in Rialto is the work that happens before any asphalt is laid. Excavation means digging out old material, loose soil, or existing pavement down to a stable depth. Grading means reshaping the exposed ground to the correct height and slope so water drains away from your home and the finished surface sits level. A standard residential driveway project usually takes one to two days, and the result is a firm, properly sloped platform ready for base rock and asphalt.
This step is where the long-term outcome is determined. A well-graded, compacted base means the asphalt on top stays flat and drains cleanly for years. A rushed or shallow excavation is the most common reason new driveways crack, sink, or shift within a few seasons. If your existing driveway has started to show widespread cracking or soft spots, the underlying base is likely the cause - and concrete curbing and sidewalks or full asphalt replacement will both require proper excavation before any new surface goes down.
Rialto Asphalt Paving has been preparing sites and laying pavement across Rialto and the Inland Empire since 2017. We handle permits, assess soil conditions on-site before pricing, and give you a written estimate that covers the full scope of work.
If you can see waves, humps, or low spots in your existing paved surface, the ground underneath has shifted or was never properly leveled. In Rialto's expansive soils, this kind of movement is common and tends to get worse over time without intervention. It is a sign the base needs attention, not just a fresh layer on top.
Standing water after one of the Inland Empire's occasional heavy rains is a clear sign that the surface is not draining correctly. Left alone, that pooling water works its way into the base and weakens it, leading to cracking and sinking during the next wet season. Proper regrading solves the cause, not just the symptom.
Any new asphalt driveway, parking pad, or paved surface needs a properly prepared base before paving begins. Grading and excavation are the necessary first step - not optional extras. Skipping them to save money upfront is the single biggest cause of early paving failures in this region.
If your existing asphalt has cracked, sunken, or broken apart, the problem almost always starts below the surface. Simply paving over a failed base will produce the same result within a few years. Proper excavation - removing the old material and rebuilding the base - is what makes the new surface last.
Rialto Asphalt Paving handles grading and excavation for residential and commercial properties across Rialto and the Inland Empire. Every project starts with an on-site visit where we evaluate the existing grade, soil conditions, and drainage patterns before we give you a number. This matters because the actual soil under your property - sandy alluvial deposits or clay-heavy ground that shifts with the seasons - directly determines how deep we excavate and what base material is needed. No two sites in this region are identical.
We handle permit applications for projects that require city approval, and we coordinate the handoff to the paving crew so the base does not sit exposed longer than necessary. For projects that also include curb or sidewalk work, we coordinate with our concrete curbing and sidewalks service so the full scope moves as one project. If your lot also needs ongoing surface management after the new surface is laid, we can set up drainage solutions to handle long-term water management from the start.
For homeowners adding a driveway where none exists - full excavation, base material, compaction, and grade set for proper drainage before paving.
For driveways where the surface has cracked or sunk due to a compromised base - old material removed, subgrade assessed, and base rebuilt before new asphalt.
For commercial or multi-family properties needing a graded platform for parking, loading, or vehicle access areas - sized and sloped to handle real traffic and drainage loads.
For properties where water runs toward the home or pools near the foundation - surface regraded to redirect runoff away from the structure and toward a proper outlet.
Rialto sits on a mix of soils that vary significantly across the city - from sandy alluvial deposits near the old river systems to clay-heavy ground that expands when wet and contracts when dry. Expansive clay soils are a particular challenge: they move with the seasons, and a base that was not excavated deep enough or was not properly compacted will shift and crack the surface above it within a few years. Spring and early fall are the preferred windows for grading work here - the ground is dry and workable, and there is little risk of rain washing out freshly graded soil before it can be properly compacted and paved.
Drainage is the other critical factor. Rialto averages modest annual rainfall, but El Nino winters can bring heavy, fast-moving storms. A poorly graded surface that sends water toward a foundation - or a base that soaks it in rather than shedding it - can fail in a single storm event. Property owners in Ontario and Colton face the same soil and drainage conditions, and we serve both with the same attention to local ground conditions before any equipment arrives.
Permits are required for most grading projects in Rialto. The City of Rialto reviews grading projects that affect drainage patterns or involve significant soil movement. We handle the permit process on your behalf and keep you informed on timeline so your project does not sit waiting on paperwork.
Describe your project - new driveway, replacement, or a lot that needs regrading. We respond within one business day and schedule a free on-site visit. There is no accurate way to price this work without seeing the soil and current grade in person.
We visit your property, evaluate the soil conditions, existing grade, and drainage direction, and take measurements. You receive a written estimate that covers scope, timeline, permit requirements, and total cost before you commit to anything.
If your project requires a permit from the City of Rialto, we handle the application and timeline. Once permits are in hand, we schedule the crew. We keep vehicles and any items near the work area off the site before the equipment arrives.
The crew removes existing material, shapes the ground to the correct slope and elevation, and compacts in layers. Before we leave, we walk you through the finished grade so you can confirm drainage direction and layout before the paving crew arrives.
Free on-site estimate. We handle permits and coordinate through paving. Serving all of Rialto and the Inland Empire.
(909) 546-5231Rialto Asphalt Paving has been working in Rialto and the surrounding Inland Empire since 2017. We have assessed enough local soil conditions to know the difference between sandy alluvial ground and the clay-heavy expansive soils that need deeper excavation and different base material. That knowledge directly affects how long your new surface holds up.
We do not give quotes over the phone for grading and excavation. The soil conditions, existing grade, and drainage situation on your specific property are the only accurate basis for a real price. Every estimate starts with a site visit and results in a written proposal you can review before agreeing to anything.
Most grading projects in Rialto require a city permit. We pull the permits on your behalf, follow the process correctly, and give you a paper trail that protects you when you sell your home. Unpermitted excavation can surface as a problem years later - we do not let that happen.
We do not just grade and leave. We coordinate the handoff to the paving phase so your prepared base does not sit exposed to weather or vehicle traffic longer than it needs to. If your project includes concrete curbing or drainage work, we sequence those phases so the whole job moves efficiently.
Getting the base right is the only thing that makes the surface above it worth the investment. When you work with Rialto Asphalt Paving in Rialto, the foundation is built correctly the first time - and the asphalt going on top of it has every reason to last.
Curbing, sidewalk edges, and other concrete flatwork that often pairs with grading and new driveway projects.
Learn MoreCatch basins, channel drains, and surface drainage systems that work with your graded surface to manage water long-term.
Learn MoreSpring and early fall fill fast - get your on-site estimate scheduled now before the best paving weather is gone.