Ground, water and winter in Thayer
Central Illinois farm ground sits nearly flat here, around 640 feet above sea level, and it drains slowly. Clay-heavy soils hold water, and freeze-thaw winters lift pavement resting on a saturated base. We cut out weak soil, compact rock in layers and grade so the surface sheds rain to a planned place.
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 Thayer estimate is sized to the soil, the traffic and the drainage on your property.