Ground, water and winter in University City
Clay-heavy soils common around St. Louis drain slowly, and century-old neighborhoods were graded to the standards of their day. Water held under asphalt through a freeze-thaw winter lifts and cracks it. We correct the grade where the site allows, remove soft soil, and compact the rock base in layers before paving.
Bids are only comparable when they spell out the same things: base depth, compacted thickness, how edges are finished, and where water is meant to go. Ask for those before you pick a number.
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 University City estimate is sized to the soil, the traffic and the drainage on your property.