Stoneco

What Stoneco does

Stoneco of Michigan is a regional construction aggregates supplier headquartered in Monroe, Michigan, and operating as a wholly-owned subsidiary of CRH (NYSE: CRH), the global diversified building materials group. Founded in 1900, the company has supplied crushed limestone, sand, and gravel to Michigan contractors for over 100 years. Its operating footprint spans South Michigan and includes 4 limestone quarries, 4 portable plants, 3 rail terminals, 11 plant operations, and 20 active sand and gravel operations, supplemented by rail-served distribution yards in Flint, Lansing, and Grand Rapids and a recycled-concrete yard in Ann Arbor.

The company offers a portfolio of core products — crushed limestone (60+ gradations and sizes), construction and concrete sand, gravel (21A, 22A, 23A, peastone), rip rap, limestone base, and recycled concrete — with MDOT- and ODOT-certified grades targeting state-funded infrastructure projects. Distribution is direct: customers obtain quotes by phone or via a recently deployed online customer portal, then pick up materials at quarry and plant locations or receive delivery. The company emphasizes a safety-first culture, publicly tracking lost-time incident days via a Production Scoreboard, and serves construction contractors, commercial and residential property owners, and government/public works agencies across highway, parking lot, driveway, and erosion-control applications.

Stoneco generates revenue through quote-based unit pricing (cubic yard, ton, or unit) with credit card/debit card acceptance at locations and a credit-application process for repeat buyers. As a private subsidiary of CRH, Stoneco does not publicly disclose standalone revenue, and the company is operationally integrated with CRH's Americas Materials Solutions division and a related CRH entity, Michigan Paving & Materials. CFO Bill Brownell is the named executive contact.

Name

Stoneco

Legal name

StoneCo

Website

https://stoneco.net

Company type

Private

Founded year

1900

Operating status

Operating

Headcount range

251–500 employees

Short description

Stoneco of Michigan is a CRH subsidiary that supplies crushed limestone, sand, gravel, and recycled concrete to construction contractors, government agencies, and property owners across South Michigan through quarries, plants, and rail-served distribution yards.

Ownership category

akta.pro rank

Product category

Construction Aggregates

NAICS

Crushed and Broken Limestone Mining and Quarrying (212312), Construction Sand and Gravel Mining (212321), Stone Mining and Quarrying (21231)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Crushed Stone Quarrying & Processing (IMAKAHAA)

akta.pro secondary industries

Sand & Gravel Extraction & Processing (IMAKAHAB), Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC), Construction Aggregates Mining & Processing (Sand, Gravel, Crushed Stone) (IMADAAAI)

Keywords

• Construction aggregates
• Crushed limestone
• Sand and gravel
• Rip rap
• Recycled concrete aggregate

Headquarters

HQ city

Monroe

HQ country

United States

HQ region

North America

Offices15 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Pricing tiers

Distribution channels1 record

Marketing channels3 records

Core offering

Stoneco of Michigan extracts, produces, and distributes construction aggregates — including crushed limestone, sand, gravel, rip rap, and recycled concrete — from quarries, sand & gravel plants, and recycle yards across Southeast Michigan. It supplies 60+ certified gradations to commercial, governmental, and residential construction projects, dispatching orders via its own truck fleet and the Quincy Rail Terminal.

Product overview

Stoneco of Michigan is a construction aggregates supplier operating as a subsidiary of CRH. The company offers a comprehensive portfolio of construction materials centered on crushed limestone, sand, and gravel products. It operates four limestone quarries, four portable plants, three rail terminals, 11 plant operations, and 20 active sand and gravel operations throughout South Michigan. The core product line includes crushed limestone in over 60 gradations and sizes, sand products (including concrete sand), gravel in various grades (21A, 22A, 23A, peastone), rip rap for erosion control, limestone base for road construction, and recycled concrete. All products meet MDOT and ODOT specifications for state-funded construction projects, and the company serves construction, landscaping, and infrastructure projects including highways, parking lots, driveways, and environmental restoration work.

Differentiator

Problem solved

Functional benefit

Brands

• Michigan Paving & Materials: A related CRH company providing paving and construction materials services

Products and services

• Crushed Limestone (multiple MDOT/ODOT gradations) Crushed limestone aggregates produced to MDOT and ODOT gradation specifications (including 21A, 6A, 1x3, 4x8, MDOT 4G, MDOT 6AA, Peastone and similar grades), sold by ton or cubic yard to construction contractors, government agencies, and homeowners for base, subbase, road surface, and landscaping applications.
• Sand and Gravel Aggregates Sand and gravel aggregates — including concrete sand, fill sand, Class 2 sand, washed sand, and pea stone — sold by cubic yard and ton to construction contractors, commercial property owners, government/public works, and residential customers for concrete production, fill, drainage, pipe bedding, and landscaping.
• Rip Rap (larger armor stone for erosion control) Heavy rip rap stone quarried and supplied by Stoneco in multiple gradations for shoreline protection, embankment stabilization, drainage channels, and erosion-control construction projects, sold to contractors and government agencies.
• Certified Project Aggregates (MDOT / ODOT specification grades) Aggregates produced to specified MDOT and ODOT gradations (21A, 6A, 1x3, 4x8, MDOT 4G, MDOT 6AA, Peastone and additional certified grades) packaged as a dedicated, spec-compliant offering for public-bid roadway, bridge, and infrastructure projects where material certification is required.
• Recycled Concrete Aggregate Recycled crushed concrete supplied from Stoneco's recycle yards for use as a sustainable base and fill material in construction, road, and site-prep applications, with pickup and delivery options for contractors and homeowners.
• Aggregate Distribution (Quincy Rail Terminal and Truck Dispatch) Logistics and delivery service operating from the Quincy Rail Terminal and Stoneco's own truck fleet, enabling pickup or delivery of aggregates to contractor, commercial, government, and homeowner customers throughout the region.

Quantifiable outcome

• Lost time incidents tracked - Ottawa Lake: 7,580+ days, Newport: 6,939+ days, Maybee: 7,374+ days, 100th Street: 9,161+ days

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• CRHparent companyOthersStoneco of Michigan is a subsidiary of CRH (NYSE: CRH), a global building materials company. CRH operates across North America, Europe, and Asia with positions in cement, ready-mixed concrete, aggregates, asphalt, civil engineering, and contracting services.

Scale indicators7 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• CRH plc: Stoneco's NYSE-listed parent company and one of the largest global aggregates and building materials producers. Operates the same aggregates product lines and end markets as Stoneco at a vastly larger global scale, and is the direct owner of Stoneco's operations.
• CEMEX: Global building materials company with U.S. aggregates and ready-mix concrete operations serving similar commercial and infrastructure end customers. Comparable product portfolio but operates at a much larger, multinational scale.
• Holcim: Global building materials giant with significant aggregates, cement, and ready-mix concrete operations. Overlaps with Stoneco on aggregates supply for construction and infrastructure, but operates at vastly larger scale and across a much broader product portfolio.
• Heidelberg Materials: Global aggregates, cement, and ready-mixed concrete producer with U.S. operations overlapping Stoneco's core product set and end markets. A broad incumbent with significant aggregates footprint, though not concentrated in Michigan.

Direct peers

• Martin Marietta Materials: Major U.S. supplier of crushed stone, sand, gravel, and other aggregates serving infrastructure, commercial, and residential construction — directly comparable in product mix, end markets, and DOT-certified supply.
• Vulcan Materials Company: The largest producer of construction aggregates in the United States, including crushed stone, sand, and gravel, serving similar highway, commercial, and residential construction end markets as Stoneco. Directly comparable business model, product set, and DOT-certified customer base.
• Summit Materials: Aggregates-focused building materials company operating quarries and plants across the U.S., serving similar DOT-certified highway and construction customers. Closely comparable in scale, product mix, and end-market exposure to Stoneco.
• Granite Construction: U.S. infrastructure and aggregates company that both produces construction materials (sand, gravel, crushed stone) and uses them in heavy civil construction. Comparable in aggregates product set and end-market exposure to DOT-funded infrastructure work.

Regional players

• Edw. C. Levy Co. Privately-held, family-owned producer of crushed stone, sand, gravel, and slag aggregates with significant operations in Michigan and the Midwest. Directly competes with Stoneco in overlapping Michigan and Great Lakes markets with a similar product portfolio.

Emerging players

• Arcosa, Inc. U.S. provider of construction products including aggregates, with a focused but smaller aggregates footprint serving similar infrastructure and commercial end markets. Comparable product mix with a more limited geographic and operational scale than Stoneco.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/stonecoofmichigan
• LinkedInlinkedin.com/company/stonecoofmichigan

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Stoneco