Bruening Rock Products

What Bruening Rock Products does

Bruening Rock Products, Inc. is a privately held, family-owned construction and aggregate materials company headquartered in Decorah, Iowa. Founded by Leo Bruening in the 1930s and incorporated in 1946, the company has grown into a multi-subsidiary operator spanning aggregate quarrying, drilling, trucking, and civil/heavy construction services. Day-to-day operations are run by brothers Greg Bruening (President) and Keith Bruening (Secretary/Treasurer), with the third generation of the Bruening family also joining the business.

The operating portfolio consists of five wholly-owned subsidiaries: Skyline Construction (road and sewer construction, Iowa, 100+ employees), Skyline Materials (aggregate production from quarries in Missouri, ~50 employees), Minnowa Construction (bridge and heavy civil contractor, Harmony, MN), Bullseye Trucking (aggregate hauling, Des Moines, IA), and Jennerjohn & Holthaus (blast hole drilling contracting, Decorah, IA, operating since the 1960s and acquired in 2005). Service lines include material trucking, concrete work, aggregate processing, civil road construction, earth work, and water and sewer installation, supported by multiple quarries and storage lots across Iowa, Minnesota, and Missouri, with project execution reach into Wisconsin, Wyoming, and Illinois.

Revenue is generated through four streams—aggregate material sales, construction service contracts, trucking services, and drilling contracting—priced on a quote basis per project. Customer segments span government agencies (state DOTs, Corps of Engineers, DNRs, municipalities), commercial enterprises (Walmart, McDonald's), and educational institutions (Luther College, public schools), with public works work typically obtained via competitive bidding. Geographic scope is regional Midwest, the company employs an estimated 150–200+ people across affiliates, and no revenue, funding, or external ownership data is disclosed.

Name

Bruening Rock Products

Legal name

Bruening Rock Products, Inc.

Website

https://brueningrockproducts.com

Company type

Private

Founded year

1930

Operating status

Operating

Headcount range

11–50 employees

Short description

Bruening Rock Products is a family-owned construction and aggregate materials company serving government, commercial, and residential clients across the Midwest. Operations span quarrying, trucking, drilling, and civil and heavy construction via five wholly-owned subsidiaries.

Ownership category

akta.pro rank

Product category

Aggregate Materials and Construction Services

NAICS

Other Crushed and Broken Stone Mining and Quarrying (212319), Nonmetallic Mineral Mining and Quarrying (2123), Other Concrete Product Manufacturing (32739)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Concrete Products, Except Block & Brick (3272)

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)

Keywords

• Aggregate materials
• Crushed rock
• Civil road construction
• Heavy civil contracting
• Material trucking

Headquarters

HQ city

Decorah

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. Material Sales (Aggregate Products): Sale of crushed rock and aggregate products manufactured at quarries across Iowa, Minnesota, and Missouri. Various size aggregate products are manufactured and stockpiled for sale.
2. Construction Services: Civil road construction, concrete work, earth work, water and sewer installation services provided directly to customers. Services range from small residential projects to large highway projects.
3. Trucking Services: Material hauling services through Bullseye Trucking, handling all aggregate distribution needs with best-in-class machinery and trucks.
4. Drilling Contracting: Blast hole drilling contracting services provided by Jennerjohn & Holthaus across multiple states.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels2 records

Core offering

Bruening Rock Products is a family-owned construction and aggregate materials company that produces crushed rock aggregate products at multiple quarries across Iowa, Minnesota, and Missouri, and provides turnkey construction services including material trucking, concrete work, civil road construction, earth work, and water and sewer installation. Services range from residential driveways to major highway and bridge construction projects.

Product overview

Bruening Rock Products is a family-owned construction and aggregate materials company serving Northeast Iowa since the 1930s. The core company operates as a unified service provider offering aggregate materials, material trucking, concrete work, aggregate processing, civil road construction, earth work, and water/sewer installation. The company has expanded through five subsidiaries: Skyline Construction (road and sewer construction, founded 1982), Skyline Materials (aggregate manufacturing in Missouri, founded 2007), Minnowa Construction (bridge and heavy civil construction in Minnesota, founded 1984), Bullseye Trucking (aggregate distribution in Iowa), and Jennerjohn & Holthaus (blast hole drilling contracting, acquired 2005). The portfolio operates as an integrated construction services ecosystem spanning aggregate production, trucking, concrete work, road construction, and specialized heavy civil services including bridge construction.

Differentiator

Problem solved

Functional benefit

Brands

• Skyline Construction: Full-service road and sewer construction company founded in 1982 by Greg and Keith Bruening, employing over 100 employees.
• Skyline Materials
• Minnowa Construction
• Bullseye Trucking
• Jennerjohn & Holthaus, Inc.

Products and services

• Material Trucking Fast delivery of construction materials using high-quality drivers and top-of-line trucks for projects of any size, ranging from residential to large commercial jobs.
• Concrete Work Concrete pouring services for driveways, parking lots, patios, and other commercial and residential projects, with over a decade of experience.
• Aggregate Processing Manufacturing of various sizes of aggregate products at multiple quarries across the tri-state area using state-of-the-art machinery, with extensive quality testing to ensure product standards.
• Civil Road Construction Road construction services with nearly 90 years of experience completing hundreds of miles of roads, using exceptional service practices and top-of-the-line materials for projects ranging from driveways to major highway projects.
• Earth Work Earth work services ranging from finish dirt work to massive excavation projects, performed using specialized machines and experienced operators for both small and large projects.
• Water and Sewer Installation Water and sewer installation services provided since 1982 with experienced crews serving both residential and commercial projects.
• Skyline Construction Full-service road and sewer construction company founded in 1982 by Greg and Keith Bruening, employing over 100 employees. Services include mass excavation, site grading, storm sewer piping, sanitary sewer piping, water main piping, base prep, aggregate placement, box culvert installation, PCC paving, curb and gutter, retaining walls, landscaping, erosion control, demolition, and bank stabilization.
• Skyline Materials Aggregate materials company operating quarries in Newark, Glasgow, Gilliam, and Miami plus storage lots in LaPlata and Marceline, Missouri. Employs approximately 50 people and manufactures various sizes of aggregate products for sale.
• Minnowa Construction Bridge and heavy civil construction company founded in 1984 by Alan and Steve Thorson, located in Harmony, Minnesota. Specializes in bridge construction, rehabilitation and repair, large-scale interchange and roadway projects, grading, demolition, precast and poured concrete structures, culverts, drainage systems, dam renovation, cofferdam installations, foundation piling, and railroad structures. Serves the Minnesota Department of Transportation, Iowa Department of Transportation, Corps of Engineers, and other government agencies.
• Bullseye Trucking Aggregate distribution services using conventional dump trucks and specialized equipment for material hauling, located in Des Moines, Iowa, with operations managed by Izzy Balik. Capable of placing sand in garages and slab on grade floors, unloading a 16-ton truck in less than 8 minutes.
• Jennerjohn & Holthaus, Inc. Blast hole drilling contracting company located in Decorah, Iowa, in operation since the 1960s and acquired by Bruening Rock Products in 2005. Provides drilling services in Iowa, Minnesota, Wisconsin, Wyoming, Missouri, and Illinois, with operations managed by Tyler Bruening.

Quantifiable outcome

• Unload and place a 16-ton truck in less than 8 minutes
• +1 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• MSHA (Mine Safety and Health Administration)minorOthersRegulatory oversight body for mine safety. Referenced on the Safety page as part of the company's safety commitment and compliance requirements.

Scale indicators7 records

Recent moves9 records

Direct peers

• Knife River Corporation: Aggregates and construction company serving the upper Midwest and Western U.S. Highly comparable to Bruening given overlapping footprint (Minnesota, Iowa-adjacent), vertically integrated model, and focus on heavy civil/highway construction.
• Construction Partners Inc. Civil infrastructure services company operating across the Sun Belt with focus on highways, bridges, and airports. Comparable through its regional DOT contract focus and vertically integrated model.
• Sterling Infrastructure: Infrastructure construction services company operating in transportation, water, and building sectors across multiple states. Comparable through its multi-subsidiary structure and diversified infrastructure project mix.
• Astec Industries: Manufactures equipment for aggregate processing, road building, and infrastructure construction. Adjacent-comparable to Bruening given its supply-side position into the same aggregate and paving value chain.
• Granite Construction: Heavy civil contractor specializing in transportation infrastructure, water resources, and mining. Directly comparable through its DOT/government agency relationships and heavy civil execution model.
• Summit Materials: Vertically integrated construction materials producer with aggregate, cement, and paving operations across the U.S. Comparable to Bruening through its aggregate quarrying and heavy civil construction platform.

Broad incumbents

• Heidelberg Materials: Major global aggregates, cement, and ready-mixed concrete producer with North American operations (formerly Lehigh Hanson). Comparable as a broad incumbent with vertically integrated materials capabilities.
• CRH plc: Global building materials group with significant aggregates and paving operations in North America. Comparable as a broad incumbent competing for the same DOT and infrastructure contracts.
• Martin Marietta Materials: Largest U.S. producer of aggregates, with operations nationwide. Relevant incumbent peer because it sets competitive dynamics and pricing in regional aggregate markets where Bruening operates.
• Vulcan Materials Company: Nation's largest producer of construction aggregates and a major asphalt and concrete producer. Comparable as the dominant national incumbent shaping aggregate market economics across the Midwest.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/brueningrock
• LinkedInlinkedin.com/company/centerville-senior-high-school

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Bruening Rock Products