Ground, water and winter in Junction City
This is Little St. Francis River country, with Ozark hills and igneous rock close to the surface in parts of the county. Slopes move water fast, and freeze-thaw winters work on anything that stays wet. We ditch and grade first, then build a rock base thick enough to keep the subgrade dry under the asphalt.
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 Junction City estimate is sized to the soil, the traffic and the drainage on your property.