Asphalt Paving in Walnut, CA

Asphalt paving in Walnut is shaped by hills. Walnut lies on the southern slopes of the steep San Jose Hills, with the gentler Puente Hills to the south, and creeks such as Snow Creek and Lemon Creek run south through town. Many homes sit on sloped lots with driveways that climb or drop to the street.

Very fast growth

Walnut had just 934 residents in 1960. By 1970 it had 5,992, by 1980 12,478, and by 1990 29,105. It has held steady since, with 28,430 people in 2020. Almost all of the housing went up between the late 1960s and 1990, so driveways and private streets across the city are 35 to 55 years old, the age range where overlays and replacements come due.

Name and history

The city is named after Rancho Los Nogales, a Mexican land grant; nogales is Spanish for walnut trees. Its first post office, opened in 1895, was called Lemon, and the name changed to Walnut in 1908. Walnut incorporated on January 19, 1959.

Hillside drainage

On sloped driveways, we set the cross-slope so water runs off to one side, add berms or curbs where runoff would undercut edges, and seal cracks before the rainy season. Walnut averages about 17 inches of rain a year, mostly between November and March, and that rain arrives in heavy storms.

Campus and commercial lots

Mt. San Antonio College, home of Hilmer Lodge Stadium and the Mt. SAC Relays, has large parking areas, and shopping centers along the main roads see steady traffic. Lots like these are best kept on a sealing and crack-filling schedule.

What Walnut owners typically need

• Overlays on 1970s and 1980s driveways with a sound base
• Full replacement where driveways have sunk or cracked on slopes
• Drainage work to keep runoff off driveway edges and away from garages
• Crack filling and sealcoating before the rainy season
• Repairs and striping for campus, church and retail lots

Hillside homes in Walnut often sit above or below the street, and many have retaining walls and planters beside the driveway. We plan equipment access to protect them.

Planning a Walnut project

Walnut summers average 90 to 92 degrees in July and August, and the city has hit 117. Fresh asphalt on sloped driveways needs time to cool before cars climb it, because turning tires on a warm slope can scuff the surface. We give clear timing for when to drive on new work. For overlays, we mill at the garage and street so the new surface meets concrete cleanly and water still drains to the gutter.

Call (909) 612-9922 for a free Walnut estimate, or

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