What Kamminga & Roodvoets does

Kamminga & Roodvoets, Inc. is a privately held heavy civil construction company founded in 1951 in Grand Rapids, Michigan, by Elwin Kamminga and Roger Roodvoets. It provides three core services: road building (ranging from city street intersections to highway interchanges such as US131, M6, and US127), site preparation for residential and commercial developments, and underground utility construction including pipe installation, sewer systems, force mains, and pump stations. The company operates two regional divisions out of Grand Rapids, MI (headquarters) and Tampa, FL (established in 1981), employing more than 200 people and serving state departments of transportation, municipal governments, airport authorities, and private commercial and residential developers.

The company's core technology stack is centered on heavy civil construction equipment and proprietary laser alignment tooling. In the 1970s the firm formed two wholly-owned subsidiaries — Laser Alignment, which developed and patented the first sewer and grade lasers for the excavating industry, and Kros Konveyors, which designed backfill conveyors for sewer trench work — establishing a historical innovation footprint in precision grading and trench backfilling technology.

Kamminga & Roodvoets generates revenue through a project-based competitive bidding model, pursuing both public infrastructure contracts (notably MDOT work) and private development projects. There is no publicly disclosed pricing; all projects are bid competitively, with separate bid intake channels for the Michigan and Florida markets. The firm does not use resellers or distributors and relies on direct relationships with government procurement officials and private developers across its two operating geographies.

Name

Kamminga & Roodvoets

Legal name

Kamminga & Roodvoets, Inc.

Website

https://kammingaroodvoets.com

Company type

Private

Founded year

1951

Operating status

Operating

Headcount range

101–250 employees

Short description

Kamminga & Roodvoets is a privately held heavy civil construction company founded in 1951, providing road building, site preparation, and underground utility construction services to government agencies and private developers across Michigan and Florida.

Ownership category

akta.pro rank

Product category

Heavy Civil Construction

NAICS

Heavy and Civil Engineering Construction (237), Other Heavy and Civil Engineering Construction (237990), Water and Sewer Line and Related Structures Construction (23711), Site Preparation Contractors (23891)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Erosion & Sediment Control (Silt Fences, SWPPP Implementation) (IMAFAKAN)

Keywords

• Road construction services
• Site preparation contracting
• Underground utility construction
• Heavy civil construction
• Highway interchange construction

Headquarters

HQ city

Michigan

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Construction Services: Project-based revenue from road building, site preparation, and underground utility construction services. Revenue is earned through competitive bidding on public infrastructure and private development projects, with contracts ranging from city street intersections to highway interchanges.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Kamminga & Roodvoets is a heavy civil construction contractor that provides road building (highway interchanges, expressways, and city street intersections), site preparation (residential plats, commercial developments, shopping malls, and retail centers), and underground utility construction (pipe installation, sewer systems, force mains, and pump stations) services out of its Grand Rapids, Michigan and Tampa, Florida offices. Projects are won through competitive bidding for government agencies, commercial developers, and residential developers.

Product overview

Kamminga & Roodvoets is a construction services company offering a unified portfolio of infrastructure services organized around three core offerings: road building (including highway interchanges and street construction), site preparation (residential and commercial development), and underground utility construction (pipe installation and sewer systems). The company operates two regional divisions—Michigan and Florida—with more than 200 employees. Historical ventures include Laser Alignment (laser technology for construction) and Kros Konveyors (backfill conveyor systems), which were spun off from the core construction operations.

Differentiator

Problem solved

Functional benefit

Products and services

• Road Building Services Road construction services covering highway interchanges, expressway projects, and city street intersections, delivered for government transportation agencies and developers in Michigan and Florida.
• Site Preparation Services Site preparation services for residential developments, commercial plats, shopping malls, and retail centers, including grading and full site readiness for vertical construction.
• Underground Utility Construction Underground pipe installation, sewer system construction, force mains, and pump station work for municipal and private development clients.
• Laser Alignment (Subsidiary) Venture developed to bring laser beam technology into excavating and construction applications, producing patented sewer and grade laser systems for precise alignment work.
• Kros Konveyors (Subsidiary) Venture that designed and built backfill conveyor systems for efficient backfilling of sewer trenches on construction sites.

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Scale indicators3 records

Recent moves11 records

Expansion highlights4 records

Broad incumbents

• Granite Construction: Publicly traded national heavy civil contractor (NYSE: GVA) executing highway, road, and underground utility projects across the U.S., competing with K&R for larger MDOT/FDOT mega-projects while operating at significantly greater scale.
• The Walsh Group: Large privately held national contractor providing heavy civil, highway, and water/wastewater construction services, comparable in capability mix to K&R but operating at substantially greater scale and geographic reach.
• MasTec: Large publicly traded infrastructure services company (NYSE: MTZ) headquartered in Florida, operating across heavy civil, utility, and pipeline construction — a broad incumbent competing for some of the same Florida and Southeast bids as K&R.
• Lane Construction: Subsidiary of Webuild Group performing large-scale heavy civil, highway, and underground infrastructure projects across the U.S., a broad incumbent that competes with K&R on the upper end of MDOT/FDOT project sizes.
• Sterling Infrastructure: Publicly traded heavy civil construction services company (Nasdaq: STRL) with overlapping capabilities in transportation, site development, and underground utilities, a useful scaled comparable for K&R's road and utility lines.

Direct peers

• Hubbard Construction Company: Florida-based heavy civil contractor (a subsidiary of Eurovia, the Vinci infrastructure arm) performing highway, airport, and site development work, a strong comparable to K&R's Florida division in services and bid environment.
• Toebe Construction: Michigan heavy civil and underground utility contractor with overlapping capabilities in road building, site preparation, and pipeline installation, very similar in scale and customer mix to K&R.
• Prince Contracting: Florida-headquartered heavy civil and highway contractor performing road, site, and underground utility work, directly comparable to K&R's Florida operations in project type and bid environment.
• Ajax Paving Industries: Florida-based paving and site preparation contractor with a similar mix of DOT, municipal, and commercial work, directly overlapping with K&R's Tampa division on scope and customers.
• Angelo Iafrate Construction Company: Michigan-based heavy civil contractor performing highway, road, and site development work across the state, closely comparable to K&R's Michigan division in services, geography, and customer base.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/kamminga.roodvoets.9
• Instagraminstagram.com/kandrincconstruction

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 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 Kamminga & Roodvoets