Ground, water and winter in Warrenton
The soil survey for this county flags wet upland soils and deep loess near the river that erodes in sheets and gullies. Add freeze-thaw winters and water under pavement becomes the main problem. We grade for runoff, remove soft material, and compact rock in lifts so the asphalt has real support.
When you compare bids, ask each contractor for three numbers in writing: the compacted asphalt thickness, the base depth, and what happens to the water. Those three decide how long the surface lasts.
Compacted asphaltTypically 2 to 3 in. for a car drive
Stone baseTypically 4 to 8 in., compacted
Drive on itUsually 2 to 3 days, longer in heat
First sealcoatTypically 6 to 12 months after paving
Typical ranges. Your Warrenton estimate is sized to the soil, the traffic and the drainage on your property.