What Duininck Bros does

Duininck is a privately held, fourth-generation family-owned heavy civil construction and construction-materials company headquartered in Prinsburg, Minnesota, founded in 1926. The firm operates across the Upper Midwest (Minnesota, South Dakota, North Dakota, Iowa), Texas, and the Southeast through regional entities Duininck Texas (Roanoke HQ) and Duininck Minnesota and South Dakota, with a specialized nationwide golf course construction arm called Duininck Golf. The company employs 101-250 people across an integrated network of 11 fixed ready-mix concrete plants in Central Minnesota, additional ready-mix plants in Willmar and Alexandria, multiple gravel pits, asphalt plants (including the NAPA Diamond Achievement-winning Ringo Lake Asphalt Plant in Spicer), portable concrete production units, and a 34,000 square foot maintenance facility in Eagle Lake.

The core technical offering is vertical integration: Duininck mines and processes its own aggregates (rock, sand, gravel, granite, dirt, oversized/pit run), produces ready-mix concrete from triple-washed local aggregates, and manufactures hot-mix asphalt (dense-graded, stone matrix, open-graded) as well as EZ STREET cold-mix asphalt. Construction services span the full project lifecycle — engineering, GPS-enabled grading, site development, underground utilities, paving, crushing, product delivery, sports surfaces, airport runways, highways, parking lots, streets, agricultural storage systems, and footing/building pads — with the Duininck Golf division adding turf, bunker, drainage, and irrigation work.

Revenue is generated through two principal channels: project-based heavy civil construction contracts (won via competitive bidding for public agencies, general contractors, and developers) and transactional materials sales of ready-mix concrete, asphalt, aggregates, and specialty products through direct sales representatives, a Central Dispatch system, and physical concrete-supply stores in Willmar and Alexandria. Pricing is quote-based and project-specific rather than published. Customer mix is split across public works/government agencies, contractors and developers, farmers/agricultural operations, and individual homeowners, with notable enterprise engagements including FedEx Ground Distribution Centers, Farmward Cooperative, Riverview Dairy (25+ year relationship), and federal projects such as the U.S. Army Corps of Engineers Lac Qui Parle Dam spillway reconstruction.

Name

Duininck Bros

Legal name

Duininck Inc.

Website

https://duininck.com

Company type

Private

Founded year

1926

Operating status

Operating

Headcount range

101–250 employees

Short description

Duininck is a fourth-generation, family-owned heavy civil construction and vertically integrated construction-materials company founded in 1926, serving public agencies, contractors, developers, farmers, and homeowners across the Upper Midwest, Texas, and the Southeast with in-house aggregates, ready-mix concrete, asphalt, paving, and site development services.

Ownership category

akta.pro rank

Product category

Heavy Civil Construction

NAICS

Site Preparation Contractors (23891), Utility System Construction (2371), Ready-Mix Concrete Manufacturing (32732), Cement and Concrete Product Manufacturing (3273), Asphalt Paving Mixture and Block Manufacturing (324121), Asphalt Paving, Roofing, and Saturated Materials Manufacturing (32412)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Concrete Products, Except Block & Brick (3272), Asphalt Paving & Roofing Materials (2950), Concrete, Gypsum & Plaster Products (3270)

akta.pro primary industry

Construction Aggregates Mining & Processing (Sand, Gravel, Crushed Stone) (IMADAAAI)

akta.pro secondary industries

Sand & Gravel Extraction & Processing (IMAKAHAB), Aggregate Processing & Value-Added Products (Washing, Screening, Asphalt/Concrete Aggregates) (IMAKAHAH), Concrete, Asphalt & Masonry Recycling (Crushing & Aggregate Production) (EUAIAHAD)

Keywords

• Heavy civil construction
• Ready-mix concrete
• Asphalt paving
• Aggregate materials
• Site development

Headquarters

HQ city

Prinsburg

HQ country

United States

HQ region

North America

Offices17 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Heavy Civil Construction Services: Provides grading, paving, site development, underground utilities, engineering, and construction management services for public and private sector projects. Revenue is project-based, earned through competitive bidding on construction contracts.
2. Construction Materials Sales: Sells ready-mix concrete, asphalt, aggregates (rock, sand, gravel, dirt), and specialty products like EZ STREET cold mix asphalt. Materials are produced in-house and sold to contractors, developers, farmers, and public agencies.
3. Golf Course Construction: Specialized golf course construction and renovation services including turf, bunkers, drainage, and irrigation installation. Serves golf courses nationwide through the Duininck Golf division.
4. Portable Concrete Plant Services: Mobile ready-mix concrete production services that bring concrete production directly to job sites, particularly for large or remote projects. Reduces transportation costs and logistics complexity.

Go-to-market motion2 records

Distribution channels5 records

Marketing channels8 records

Core offering

Duininck Bros is a vertically integrated heavy civil construction company that produces its own construction materials, including ready-mix concrete, hot mix and cold mix asphalt, and a full line of aggregates (rock, sand, gravel, granite, dirt). The firm provides end-to-end construction services such as engineering, grading, paving, underground utilities, and site development for public agencies, contractors, developers, farmers, and golf course operators across the Upper Midwest, Texas, and the Southeast. Materials are sold directly through 11 fixed ready-mix plants and physical supply stores, while construction projects are delivered by company-owned crews and equipment.

Product overview

Duininck is a construction materials supplier and heavy civil construction company offering a vertically integrated portfolio of products and services. The company mines, processes, and produces its own aggregate, asphalt, and ready-mix concrete, providing direct control over material quality. The core products include Ready-Mix Concrete (produced using locally sourced, triple-washed aggregates), Asphalt Hot Mix (in dense-graded, stone matrix, and open-graded formulations), and EZ STREET Ambient Asphalt Technology (a ready-to-use cold mix alternative). Supporting products include a full range of aggregates: Rock, Granite, Gravel, Sand, Dirt, and Oversized & Pit Run materials. Concrete Supplies rounds out the product line. Services span the construction lifecycle including Crushing (recycling concrete/asphalt on-site), Paving (for highways, streets, driveways), Site Development, Underground Utilities, Engineering, Grading (using GPS technology), Product Delivery, Sports Surfaces, Golf Courses, Airport Runways, Highways, Parking Lots, Streets, Agricultural Storage Systems, Portable Concrete Plants, Footing & Building Pads, Site Infrastructure, and Equipment Repairs. The company operates 11 fixed ready-mix plants in Central Minnesota and maintains operations across the Upper Midwest, Texas, and Southeast.

Differentiator

Problem solved

Functional benefit

Brands

• EZ STREET® Ambient® Asphalt Technology: Ready-to-use, performance-proven asphalt engineered as a true alternative to hot mix asphalt for pothole repairs, utility cuts, overlays, and surface maintenance

Products and services

• Ready-Mix Concrete High-quality ready-mix concrete produced in-house from locally sourced, triple-washed aggregates, supplied for applications ranging from homeowner patios to MnDOT bridge decks, delivered through 11 fixed plants and a Central Dispatch system.
• EZ STREET Ambient Asphalt Technology Ready-to-use, performance-proven cold mix asphalt engineered as a true alternative to hot mix, designed for durability in wet conditions and wide temperature ranges, with instant traffic readiness and no mixing or tack coat required.
• Asphalt (Hot Mix) Sustainable hot mix asphalt produced in tailored formulations including dense-graded, stone matrix, and open-graded mixes for public and private paving projects.
• Oversized & Pit Run Aggregate Large-format aggregate materials including RIPRAP Class 1 (2 to 6 inches), RIPRAP Class 2 (4 to 12 inches), RIPRAP Class 3 (6 to 18 inches), boulders over 18 inches, and pit run fill for construction specifications.
• Rock (Crushed & Decorative Stone) Crushed rock and decorative stone including 1 1/2 inch concrete rock, pea rock, 3/4 inch cracked washed rock, 5/8 inch and 3/4 inch round rock, sewer rock, granite, and base rock variants processed to strict standards.
• Granite Aggregate Granite aggregates for construction and landscaping including 1 1/2 inch granite (CA-1), Class 2 and Class 5, CA-50 (3/4 inch granite), 3/8 inch granite chips, and 3 inch minus.
• Dirt (Fill & Grading Materials) Fill and grading materials including clay fill, screened topsoil, and black dirt sourced locally and processed to standards for reliable, long-lasting performance.
• Gravel (Crushed & Base Materials) Crushed gravel and base materials including Class 1, Class 3 (screened), Class 5, crushed concrete, crushed gravel IA, and screened gravel IA for construction applications.
• Sand (Washed & Bedding) Washed sand and bedding materials including concrete sand washed, granite sand, unwashed mansand, and washed mansand for concrete and utility projects.
• Concrete Supplies Professional concrete tools and construction supplies including rebar, sealants, and other site essentials from industry-trusted brands available in every season.
• Heavy Civil Construction Services End-to-end heavy civil construction services including grading, paving, site development, underground utilities, engineering, and construction management for public and private sector projects, delivered through competitive bidding on construction contracts.
• Golf Course Construction (Duininck Golf) Specialized golf course construction and renovation services including turf, bunkers, drainage, and irrigation installation, serving golf courses and country clubs nationwide through the Duininck Golf division.
• Portable Concrete Plant Services Mobile ready-mix concrete production services that bring concrete production directly to job sites, particularly for large or remote projects, reducing transportation costs and logistics complexity.

Quantifiable outcome

• 10,255+ yard continuous concrete pour completed with 45 trucks running simultaneously
• +2 more outcomes

Named customers9 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators6 records

Recent moves15 records

Expansion highlights5 records

Direct peers

• Granite Construction Incorporated: Heavy civil construction contractor with vertically integrated materials (aggregates, asphalt) and significant West/Midwest U.S. presence; competes for many of the same highway, airport, and site development project types as Duininck, though at meaningfully larger scale.
• Sterling Infrastructure (formerly Sterling Construction): Heavy civil construction company with e-infrastructure, transportation, and building solutions segments; directly comparable in scope of services (highways, bridges, site development) though larger and more geographically diversified than Duininck.
• Knife River Corporation: Vertically integrated aggregates, asphalt, and ready-mix concrete producer spun off from MDU Resources in 2023; the closest publicly-traded analog to Duininck with similar geographic concentration in the upper Midwest, Plains, and Texas and overlapping end-market exposure to public works and energy infrastructure.
• HC&M Construction (formerly Haskell-Sells) / Holmes Construction: Heavy civil contractor with comparable Midwest presence performing highway, bridge, and site development work for state DOTs and municipalities; overlaps with Duininck on bid-list, scope, and end customers.
• Mathy Construction Company: Family-owned Midwest paving, grading, and aggregate producer based in Wisconsin; directly comparable to Duininck in asphalt paving operations, aggregates supply, and regional heavy civil construction services to DOTs and municipalities.
• Ames Construction: Privately held heavy civil and mining contractor headquartered in Minnesota with similar Midwest regional concentration, performing highway, heavy earthwork, and mine site development projects — direct comparable on business model, size, and footprint.
• Brick & Mortar Ventures (industry context only) — replace with: Park Construction Company: Midwest-based heavy civil and asphalt paving contractor with similar project mix (highways, airfields, commercial site development); directly comparable in geography and service portfolio to Duininck's Minnesota and Texas operations.
• Bituminous Roadways (BR): Family-owned Minneapolis-area asphalt paving and heavy civil contractor; one of Duininck's closest direct competitors for MnDOT bids, commercial paving, and aggregate supply in the Twin Cities/Central Minnesota market.

Broad incumbents

• Martin Marietta Materials: One of the largest U.S. aggregates producers with downstream ready-mix and asphalt operations; competes with Duininck in aggregates supply and increasingly in heavy civil construction services as the company expands vertically.
• Vulcan Materials Company: Largest U.S. producer of construction aggregates with growing ready-mix concrete exposure; Vulcan's national footprint and pricing power set the competitive benchmark for aggregate-heavy operators like Duininck.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCkKJyQDlwZQ2PPkspTLdhzA
• Facebookfacebook.com/duininckinc
• LinkedInlinkedin.com/company/duininck
• Instagraminstagram.com/duininckinc
• Xx.com/duininckinc

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries5 records

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 Duininck Bros