What Kienstra does

Kienstra Ready Mix Concrete is a family-owned ready-mix concrete producer and supplier headquartered at 755 S. New Ballas, Suite 150, St. Louis, Missouri. Founded by Ted Kienstra Sr. in the early 1940s as a material supply company and beginning concrete production in 1947, the company operates a regional network of ready-mix plants serving Eastern Missouri and Metro East Illinois (15 Missouri counties including St. Louis City, St. Louis County, St. Charles, Franklin, Jefferson, and others, plus Madison and St. Clair counties in Illinois). Its core product is batched ready-mix concrete produced through controlled batching of aggregates, cement, water, and admixtures, mixed to uniform consistency, and delivered directly to job sites within roughly 20 miles of each plant via an in-house fleet that includes 40+ drivers.

The company's product and service portfolio centers on ready-mix concrete for residential, commercial, industrial, and municipal/infrastructure applications, complemented by specialty offerings such as decorative concrete (colored, stamped, exposed aggregate), chemical additives (retarders, high-range water reducers, fiber reinforcement), and a web-based concrete volume calculator. Supporting services include dispatch and logistics coordination across multiple plant locations, quality control oversight at job sites and plants, plant maintenance, and bulk aggregate and cement transportation. The customer base spans residential homeowners (driveways, patios, foundations), residential contractors (decorative and larger residential pours), commercial builders, industrial clients (warehouses, manufacturing facilities, multi-story construction), and municipal/government projects (roads, bridges, public facilities).

Kienstra generates revenue through per-cubic-yard pricing on delivered ready-mix concrete, with orders coordinated via phone-based dispatch (314.739.0200) and a sales-led go-to-market motion focused on direct relationships with contractors and builders alongside inbound residential demand. Marketing relies on the company website, a resources section with educational content and the concrete calculator, and direct phone outreach. Leadership is held by the Bruns and Kienstra families, with Dan Bruns serving as President and Colin Bruns as Director of Sales and Marketing. Capital allocation is internally funded; there are no disclosed funding rounds, acquisitions, or institutional investors.

Name

Kienstra

Legal name

Kienstra Ready Mix Concrete

Website

https://kienstrareadymix.com

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

11–50 employees

Short description

Kienstra Ready Mix Concrete is a family-owned, multi-plant producer and supplier of ready-mix concrete serving residential, commercial, industrial, and municipal projects across Eastern Missouri and Metro East Illinois since 1947.

Ownership category

akta.pro rank

Product category

Ready-Mix Concrete Supply

NAICS

Ready-Mix Concrete Manufacturing (327320)

SIC

Concrete, Gypsum & Plaster Products (3270)

akta.pro primary industry

Ready-Mix Concrete Production & Delivery (IMADAAAA)

Keywords

• Ready-mix concrete supply
• Concrete delivery services
• Concrete plant operations
• Residential concrete delivery
• Commercial concrete supply

Headquarters

HQ city

St Louis

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Revenue model

1. Ready Mix Concrete Sales: Kienstra generates revenue through the sale of ready mix concrete delivered to construction sites. Concrete is priced per cubic yard and orders are coordinated through dispatch. The company supplies both residential and commercial/infrastructure projects with same-day or next-day delivery potentially available.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Kienstra Ready Mix Concrete produces and delivers ready-mix concrete from multiple plant locations across Eastern Missouri and Metro East Illinois. The company batches aggregates, cement, water, and admixtures at its plants and delivers the finished concrete directly to construction job sites via its own fleet of trucks, serving residential homeowners, contractors, commercial builders, and municipal/industrial projects.

Product overview

Kienstra is a ready-mix concrete supplier operating as a single unified product business with complementary service offerings. The core product is ready-mix concrete, which is produced at multiple plant locations and delivered to customers via company-operated trucks. The product portfolio includes the core ready-mix concrete along with residential delivery services, an online concrete calculator tool, decorative concrete options (colored, stamped, exposed aggregate), and concrete additives (retarders, water reducers, fiber reinforcement). Supporting services include dispatch/logistics coordination, quality control, and plant operations. The company serves residential, commercial, municipal, and infrastructure projects across Eastern Missouri and Metro East Illinois.

Differentiator

Problem solved

Functional benefit

Products and services

• Ready Mix Concrete Production and delivery of ready-mix concrete batched from aggregates, cement, water, and admixtures. Concrete is mixed at plant locations and delivered directly to construction job sites via company trucks. Used by contractors, commercial builders, municipal entities, and residential customers.
• Residential Concrete Delivery Delivery of ready-mix concrete for residential projects including driveways, patios, pool decks, sidewalks, garage floors, footings, foundations, steps, curbs, and slabs for sheds and outbuildings. Dispatch is coordinated at 314.739.0200 with same-day or next-day delivery potentially available.
• Decorative Concrete Options Specialty concrete finishes including colored concrete, stamped concrete, and exposed aggregate finishes for projects requiring enhanced aesthetic appearance. Used by residential contractors and homeowners seeking decorative applications.
• Concrete Additives Chemical and material additives for concrete performance enhancement, including retarders (slows set time in hot weather), high-range water reducers (improves flow without adding water), and fiber reinforcement (reduces cracking).

Named customers5 records

Segments5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Buzzi Unicem USA: US subsidiary of Italian cement group with cement, ready-mix, and concrete products operations across the Midwest and East Coast. Comparable product offering and Midwest regional presence, but at national scale and with vertically integrated cement supply.
• Vulcan Materials: Largest US producer of construction aggregates with growing ready-mix concrete operations following its acquisition of US Concrete. Comparable in aggregates input supply and ready-mix end markets, with substantially greater scale and product breadth.
• Martin Marietta Materials: US producer of aggregates, ready-mixed concrete, cement, and asphalt with operations across many states including the Midwest. Comparable in concrete products and infrastructure customer base, but with substantially greater scale and aggregates-anchored portfolio.
• Quikrete: Largest US producer of pre-blended concrete mixes and related concrete products. Overlaps with Kienstra in the broad concrete-materials category and serves overlapping contractor and DIY customers, but operates a packaged/retail-skewed model rather than ready-mix plant delivery.
• CEMEX: Global building-materials company with extensive US ready-mix concrete, aggregates, and cement operations, including the Midwest. Comparable in core product and end markets but vastly larger scale, geographic breadth, and vertical integration.
• Holcim: Global cement, aggregates, and ready-mix concrete producer with a large US footprint. Overlaps with Kienstra across the ready-mix value chain and serves the same contractors, developers, and infrastructure customers, but at national/international scale.
• Summit Materials: US-based vertically integrated construction materials producer of cement, aggregates, and ready-mix concrete across multiple regions. Comparable product overlap in ready-mix and infrastructure end markets, with broader geographic and product diversification than Kienstra.

Direct peers

• Concrete Supply Co. Regional ready-mix concrete producer focused on residential, commercial, and contractor customers with multi-plant distribution across the Carolinas. Highly comparable to Kienstra in product offering (ready-mix), customer mix (residential and commercial), and multi-plant regional delivery model.
• CalPortland: West Coast producer of ready-mix concrete, aggregates, and cement products operating multi-plant networks. Comparable in core product, customer segments (contractors and infrastructure), and capital-intensive plant/truck operating model — though at greater scale and broader geography.
• Ark Readymix Concrete: Regional ready-mix concrete producer with plant locations in the US Midwest serving residential and commercial customers. Closely comparable to Kienstra's product focus, multi-plant regional delivery model, and contractor/homeowner customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/KienstraCo
• Facebookfacebook.com/KienstraCo

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kienstra