Cianbro Corporation

What Cianbro Corporation does

Cianbro Corporation is a 100% employee-owned, full-service construction contractor founded in 1949 by the Cianchette Brothers and headquartered in Pittsfield, Maine. The company plans, manages, and self-performs technically complex construction projects for public and private clients across the United States through six core market segments: Building (commercial, healthcare, government, education, hospitality); Industrial & Manufacturing (cement, chemical, food & beverage, petrochemical, pulp & paper, semiconductor, wood products); Infrastructure (bridges, marine structures, water/wastewater, dams, deep foundations); Power & Energy (transmission up to 500 kV, substations, wind, solar, storage); Modular Manufacturing (pre-fabrication across three Atlantic-access facilities in Maine and Maryland); and Refining & Petrochemical via subsidiary Starcon. Reported capability breadth spans civil, structural, mechanical, electrical, instrumentation, telecommunications, thermal, and fabrication/coating disciplines, executed against a roughly 3,500-piece equipment fleet valued at nearly $150 million. Delivery methods offered are pre-construction, construction management, general contracting, and design-build.

The corporate structure is multi-brand: wholly owned subsidiaries include Starcon International (acquired 2010, industrial mechanical services in TX/IL/LA), A/Z Corporation (acquired 2019, Connecticut-based engineering-construction and energy management), R.C. Stevens Construction Company (acquired April 2022, Winter Garden FL, southeastern US commercial/healthcare/industrial), and The Cianbro Institute (workforce development). Revenue is generated via project-based, quote-priced enterprise contracts; the company does not disclose pricing publicly. GTM is direct enterprise field sales bidding for large public- and private-sector projects via competitive procurement; project-based contract wins form the unit of revenue (e.g., Cross Town 175 MW/350 MWh battery storage for Plus Power, Maine Veterans' Homes, Puritan Medical expansion, Western Maine Renewable Energy). Underlying technology is project-management software (Primavera P6, Procore, Touchplan, HCSS), 3D work packaging and laser scanning, automated pipe preparation/welding, and electronic crane rigging; proprietary physical innovations include the Cianbro Beam Clamp, Cianbro Pipe Grab, and a full-body construction harness with 100% tie-off. Certifications span ISO 9001, AISC, ASME S&U, NBIC R, SSPC QP-1/QP-2, PCI, ABC AQC, and OSHA VPP Star Mobile Workforce. The company is ranked 30th in ABC's 2025 Top 250 Performers and 94th in ENR's 2025 Top 400 Contractors, and is not publicly traded.

Name

Cianbro Corporation

Legal name

Cianbro Corporation

Website

https://cianbro.com

Company type

Private

Founded year

1949

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Cianbro Corporation is a 100% employee-owned, full-service US construction contractor self-performing building, industrial, infrastructure, power & energy, modular, and refining projects for public and private clients across six market segments, operating through wholly owned subsidiaries Starcon, A/Z, and R.C. Stevens.

Ownership category

akta.pro rank

Product category

Heavy Civil and Industrial Construction Services

NAICS

Nonresidential Building Construction (2362), Heavy and Civil Engineering Construction (237), Industrial Building Construction (23621), Power and Communication Line and Related Structures Construction (237130)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Heavy Construction Other Than Bldg Const - Contractors (1600), Operative Builders (1531)

akta.pro primary industry

Self-Performing General Contractors (IMAFAAAI)

akta.pro secondary industries

Commercial General Contracting (New Build) (IMAFAAAA), Overhead & Underground Collection System Construction (MV/HV Lines, Duct Banks) (EUAEADAG)

Keywords

• Industrial construction services
• Infrastructure construction
• Modular manufacturing services
• Power and energy construction
• Employee-owned contractor

Headquarters

HQ city

Pittsfield

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Supply Chain, Operations, Others

Revenue model

1. Construction Services: Full-service construction contracting including pre-construction, construction management, general contracting, and design-build services. Revenue generated through project-based fees for industrial, commercial, infrastructure, and power/energy construction projects across public and private sectors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Cianbro Corporation is a full-service construction contractor providing pre-construction, construction management, general contracting, and design-build services for large-scale public and private sector projects across Building, Industrial & Manufacturing, Infrastructure, Power & Energy, and Modular Manufacturing markets. The company self-performs civil, structural, mechanical, electrical, instrumentation, telecommunications, thermal, fabrication and coating work, and delivers projects through wholly-owned subsidiaries including Starcon International, A/Z Corporation, and R. C. Stevens Construction Company.

Product overview

Cianbro Corporation is a 100% employee-owned construction and construction services company operating as a full-service contractor with a multi-brand, multi-market portfolio structure. The core company offers Building, Industrial & Manufacturing, Infrastructure, Modular Manufacturing, Power & Energy, and Support Services market segments. The portfolio includes four subsidiaries: A/Z Corporation (engineering-construction, acquired 2019), R. C. Stevens Construction Company (commercial/healthcare/industrial construction, acquired April 2022), Starcon International (industrial mechanical services, acquired 2010), and Total Specialty Services. The Cianbro Institute provides workforce development across all business units. Self-perform capabilities span civil, structural, mechanical, electrical, instrumentation, telecommunications, thermal, and fabrication and coating disciplines.

Differentiator

Problem solved

Functional benefit

Products and services

• Building Market Construction Services Design-build, construction management, and general contracting for commercial, healthcare, government, correctional, life sciences, scholastic, industrial, and hospitality building projects delivered from conceptual design through occupancy.
• Industrial & Manufacturing Construction Services Construction, maintenance, and restoration services for industrial plants including cement, chemical, food & beverage, manufacturing, petrochemical, pulp & paper, semiconductor, and wood products facilities. Addresses civil, structural, mechanical, and electrical challenges on operating production facilities.
• Infrastructure Construction Services Construction services for movable and fixed bridges (rail and highway), marine fixed structures, ports and terminals, water/wastewater treatment, government marine facilities, dams, and pile driving/deep foundations.
• Power & Energy Construction Services Construction, maintenance, restoration, emergency response, and construction management services for transmission and distribution lines (up to 500 kV), substations, wind power, solar installations, and power generation facilities.
• Modular Manufacturing Services Pre-fabrication and pre-assembly of components into modules from three U.S. facilities with deep-water Atlantic Ocean access, serving petrochemical, refining, and industrial clients with controlled-environment construction, reduced field labor risk, and 97% historical weld acceptance.
• Fabrication & Coating Services Turnkey fabrication and coatings services at the Pittsfield, Maine facility specializing in bridge fabrication, miscellaneous metals, heavy weldments, and sophisticated coatings.
• Starcon International Industrial & Mechanical Services Capital construction, turnaround execution, plant maintenance, and specialty services for refining, chemical, natural gas processing, and food & beverage facilities, with offices in La Porte TX, New Lenox IL, and Gonzales LA.
• A/Z Corporation Engineering-Construction Services Design, construction, maintenance, and energy management services provided by A/Z Corporation to technology-oriented markets as part of The Cianbro Companies.
• R. C. Stevens Construction Company Services Full-service design-build, construction management, and general contracting for commercial, financial, healthcare, and process manufacturing projects in the southeastern United States.
• The Cianbro Institute Workforce Development Workforce development providing safety, trade, pre-apprenticeship, apprenticeship, leadership, professional development, and college internship programs for current and future team members.

Quantifiable outcome

• Safer job sites through Beyond Zero program and CAPP behavior-based safety process
• +3 more outcomes

Named customers8 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• R. C. Stevens Construction CompanycoreStrategic or Co-development Partner · 1 April 2022Cianbro acquired R. C. Stevens Construction Company of Winter Garden, Florida to establish presence in the southeastern United States. The acquisition consolidates R.C. Stevens' strong industrial, healthcare, and commercial construction reputation with Cianbro's regional growth strategy. The deal supports R.C. Stevens' growth and integrates its team into Cianbro's operations.
• Starcon InternationalcoreStrategic or Co-development PartnerAcquired in 2010, Starcon is a full-service contractor offering comprehensive industrial and mechanical services in refining, chemical, natural gas processing, and food & beverage industries.
• A/Z CorporationcoreStrategic or Co-development PartnerAcquired in 2019, A/Z Corporation is a Connecticut-based engineering-construction firm providing diverse industry services including design, construction, maintenance, and energy management, focusing on technology-oriented markets.
• Peregrine Turbine TechnologiesminorStrategic or Co-development PartnerPartnership to add long-duration thermal energy storage to Cianbro's solar field in Pittsfield, Maine.
• Plus PowercoreStrategic or Co-development PartnerPlus Power awarded Cianbro the Cross Town Energy Storage project in Gorham, Maine - a 175MW/350 MWh battery energy storage facility. Plus Power began operations at the facility in 2026.

Scale indicators10 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Holder Construction: Large private general contractor focused on commercial, healthcare, industrial, and mission-critical/data center projects. Comparable in scale, private status, and self-perform capabilities, though Holder is more concentrated in mission-critical verticals.
• Mortenson Construction: Privately held U.S. general contractor with strong wind, solar, transmission, and data center practices alongside commercial and healthcare. Highly comparable in Power & Energy and modular capabilities, with similar self-perform approach.
• Clark Construction Group: Large private U.S. general contractor serving commercial, healthcare, education, and infrastructure markets. Comparable in building market scope and large-scale project execution at similar scale.
• Walsh Group / Walsh Construction: Family-owned U.S. general contractor with heavy civil, building, and water/transportation practices. Comparable privately held structure, scale, and broad market coverage with significant self-perform capabilities.
• Granite Construction: U.S. heavy civil and infrastructure contractor with significant materials, transportation, water, and utility system exposure. Comparable in infrastructure, bridge, and dam/heavy civil work to Cianbro's Infrastructure market.
• Brasfield & Gorrie: One of the largest privately held employee-owned general contractors in the U.S., operating across commercial, healthcare, industrial, and infrastructure markets. Closely comparable to Cianbro on ownership structure, self-perform depth, and multi-market general contracting scope.
• Sundt Construction: 100% employee-owned general contractor operating across building, industrial, infrastructure, and heavy civil markets. Closely mirrors Cianbro's ESOP model and self-perform discipline at similar scale and regional scope.
• PCL Construction: 100% employee-owned North American general contractor operating across commercial, civil, industrial, and renewables. Comparable ownership model, multi-market self-perform delivery, and similar revenue scale to Cianbro.

Broad incumbents

• Bechtel Corporation: One of the largest privately held global EPC contractors serving energy, infrastructure, defense, and nuclear markets. Overlaps with Cianbro on industrial, power/energy, and infrastructure EPC work but operates at a vastly larger scale and global footprint.
• Turner Construction: One of the largest U.S. commercial general contractors (subsidiary of HOCHTIEF), operating across nearly all building verticals. Much larger and broader than Cianbro but overlaps significantly in commercial building and healthcare/institutional work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/cianbro
• Facebookfacebook.com/342764565443
• LinkedInlinkedin.com/company/cianbro-corporation

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Cianbro Corporation