What's under a Rhineland driveway
Two kinds of ground meet here. The bottoms below are river alluvium that stays wet and floods. The uplands in this county include claypan soils with very slow permeability and a perched water table in winter and spring. Both hold water where pavement does not want it, so ditches, culverts and base depth carry the job.
Before you sign anything, get the base depth and the compacted asphalt thickness on paper. Two bids that look far apart are often just two different pavements.
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 Rhineland estimate is sized to the soil, the traffic and the drainage on your property.