Calculate cubic yards, bags needed, and Davenport IA-accurate ready-mix costs for driveways, patios, basements, garage floors, commercial slabs & more in the Quad Cities metro.
Enter project dimensions to calculate volume, bags, and estimated Davenport IA material cost.
Iowa Building Code requires permits for structural concrete in Davenport. Contact the City of Davenport Development & Neighborhood Services at (563) 326-7765 before starting any structural pour.
Patio 4 in · Driveway 5–6 in · Garage 5–6 in · Commercial slab 5–7 in · Basement floor 4–5 in · Foundation wall 10–12 in
Davenport is the largest of the four Quad Cities — straddling the Mississippi River across from Rock Island and Moline, Illinois — and serves as the economic and construction hub of eastern Iowa. The city's concrete environment is shaped by two distinct soil profiles: Mississippi River alluvial soils near the riverfront (sandy loam and silty clay that drain well but can settle under heavy loads) and glacial till clay further inland across Scott County that expands and contracts with Iowa's dramatic seasonal moisture swings. Iowa Building Code mandates 4,000 PSI air-entrained concrete with 5–7% air content and W/C ≤ 0.45 for all outdoor flatwork, and Davenport's 42-inch frost depth — one of the deeper frost depths in Iowa — requires all structural footings to extend well below grade. The Quad Cities' strong manufacturing and logistics economy drives consistent commercial slab and warehouse floor demand along the I-74 and I-80 corridors.
All outdoor flatwork: 4,000 PSI + 5–7% air entrainment, W/C ≤ 0.45 · Basement / foundation walls: 4,000 PSI min., exterior damp-proofing required, IBC permit required · Commercial slabs: 4,500 PSI fiber-reinforced, engineered design for heavy loads · Footings: must extend below 42 in. frost depth in Scott County. Verify with City of Davenport Development & Neighborhood Services at (563) 326-7765.
Multiply length × width × (depth in inches ÷ 12) to get cubic feet, then divide by 27 for cubic yards. Always add a minimum 10% waste factor — Scott County short-load fees of $80–$140 for orders under 3–5 cubic yards apply at most Quad Cities plants. In summer, Davenport's hot, humid July and August weather — combined with Iowa's frequent southwest winds off the plains — can accelerate set times on large flatwork pours. Schedule pours before 7 AM and specify a mid-range set retarder when temperatures exceed 85°F.
Near the Mississippi riverfront, Davenport's alluvial soils can be soft and moisture-saturated — particularly during spring flooding seasons. Always proof-roll and compact to 95% Proctor density before any pour, and install a minimum 4–6 in. compacted crushed limestone base. Inland Scott County glacial till clay expands aggressively during Iowa's spring thaw. With a 42-inch frost depth — deeper than most Iowa cities — never skip a full-depth footing excavation on any structural project. On lots near the river basin, install perimeter French drains to redirect spring snowmelt away from slab bases and foundation walls.
Davenport and the Quad Cities benefit from strong ready-mix competition — Cemex, Martin Marietta Aggregates, and several independent Iowa and Illinois operations serve the metro along I-74, I-80, and US-61. Bettendorf and eastern Scott County projects are well-served with competitive pricing. Rock Island and Moline (Illinois side) use Illinois Building Code requirements but are served by the same plants. Outer Scott County rural areas may see $8–$12/yd in haul surcharges. Compare with the Iowa Concrete Calculator and the Des Moines Concrete Calculator for statewide context.
| Mix / PSI | Davenport Price / Cu Yd | National Avg | Best For | Air Entrained? | IBC Code |
|---|---|---|---|---|---|
| 3,500 PSI — Interior | $110–$125 | $130–$150 | Protected basement floors, interior slabs | Not Outdoor | Interior Only |
| 4,000 PSI — Standard | $118–$136 | $145–$165 | Driveways, patios, sidewalks, garages | Required | Compliant |
| 4,500 PSI — Commercial | $128–$148 | $155–$175 | Heavy commercial slabs, retaining walls | Required | Compliant |
| 5,000 PSI — Industrial | $140–$162 | $163–$185 | Warehouse / industrial / structural slabs | Required | Compliant |
| Fiber / Stamped Decorative | $142–$192 | $155–$210 | Patios, decorative flatwork | Required | Compliant |
Davenport (Scott County, IA) averages $118–$136/yd — Iowa Building Code applies. Bettendorf runs similarly at $118–$138/yd. Rock Island and Moline (IL side) are served by the same Quad Cities plants but fall under Illinois Building Code — confirm PSI and frost depth requirements with Rock Island County or the City of Moline building departments. All four cities benefit from the same competitive Quad Cities plant network. Rural Scott County areas may see $8–$12/yd in haul surcharges depending on plant proximity.
City of Davenport, Iowa DOT, and industry references for compliant concrete work across the Quad Cities.
Apply for Davenport building permits, schedule footing and slab inspections, verify Iowa Building Code (IBC) concrete requirements, and access licensed contractor verification for all residential and commercial concrete work in the City of Davenport — including foundations, basement slabs, retaining walls, driveways, and commercial structural slabs throughout Scott County. Call (563) 326-7765 or visit the City of Davenport online permit portal for applications, fee schedules, and inspection booking.
Visit Davenport Dev. ServicesAccess Iowa DOT standard specifications for concrete construction across the Quad Cities and Scott County, driveway access permit applications for I-74, I-80, US-61, and other state-maintained highways in eastern Iowa, Scott County frost depth data, and concrete standards for road-adjacent and right-of-way projects throughout the Davenport metro — including all state highway rights-of-way bordering residential and commercial properties along the Mississippi River corridor.
Visit Iowa DOTFind NRMCA-certified ready-mix producers across Davenport, Bettendorf, and the Quad Cities metro, access ACI 318 cold-weather and freeze-thaw concrete placement guides for Davenport's 42-inch frost depth and 40–55 annual freeze-thaw cycles, Mississippi River valley alluvial soil subgrade preparation resources, air-entrained mix design recommendations for Iowa Building Code compliance, and expert guidance on commercial and industrial concrete specifications for the Quad Cities' strong manufacturing, logistics, and healthcare construction market.
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