Ground, water and winter in Beverly Hills
Loess over clay runs under most of St. Louis County, and the county soil survey warns that local roads and streets on many of these soils need adequate base material plus ditches and culverts against low strength and frost action. Water under asphalt freezes and lifts it. We drain, compact, then pave.
A cheap bid usually gets cheap somewhere you cannot see. Ask what depth of stone goes down, how thick the asphalt is after rolling, and who fixes it if water still stands.
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 Beverly Hills estimate is sized to the soil, the traffic and the drainage on your property.