What William Charles Construction does

William Charles Construction is a U.S. heavy civil construction contractor founded in 1892 and headquartered in Rockford, Illinois, with a secondary office in Scottsdale, Arizona. The company delivers infrastructure projects for both public sector clients (highways, tollway interchanges, bridges, rail yards, intermodal facilities, underground utilities) and private sector clients (industrial facilities, power generation, commercial site development). It operates three integrated service lines — Heavy Civil Construction, Environmental Management (landfill, soil remediation, hazardous materials handling, underground storage tank removal), and Industrial/Power (EPC, turnkey design-build, structural steel, heavy rigging, crane services) — and self-performs all or part of each project from pre-construction planning through execution and ongoing maintenance.

The business model is project-based professional services revenue derived from competitive bidding and direct relationship-driven acquisition, with 80% of business sourced from recurring customers. Pricing is individually negotiated per contract scope rather than standardized; the company leverages a centrally located headquarters to mobilize nationwide and is differentiated by an Experience Modification Rate of 0.58 (approximately 40% below industry average) and 130 years of operating history.

Since 2022, William Charles Construction has operated as a wholly-owned subsidiary of MasTec, Inc., acquired through MasTec's purchase of Infrastructure and Energy Alternatives (IEA), and is positioned within MasTec's Clean Energy and Infrastructure segment alongside sister brands William Charles Electric, Ragnar Benson Construction, and ACC West Coast. The company employs between 101 and 250 people and reports no public revenue figures; no proprietary technology platform, AI/ML capability, patents, or external funding rounds are disclosed.

Name

William Charles Construction

Legal name

William Charles Construction Company LLC

Website

https://williamcharlesconstruction.com

Company type

Private

Founded year

1892

Operating status

Operating

Headcount range

101–250 employees

Short description

William Charles Construction is a U.S. heavy civil contractor founded in 1892, serving public and private sector clients across highways, bridges, environmental remediation, and industrial/power projects, operating nationwide from Rockford, Illinois as a subsidiary of MasTec.

Ownership category

akta.pro rank

Product category

Heavy Civil Construction Services

NAICS

Heavy and Civil Engineering Construction (237), Other Heavy and Civil Engineering Construction (237990), Industrial Building Construction (23621)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600), Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Construction Program Management (Multi-site/Portfolio) (IMAFAAAF)

akta.pro secondary industries

Trenching & Utility Excavation (IMAFAKAD), Mining & Mineral Processing Facility Construction (IMAFADAE)

Keywords

• Heavy civil construction
• Environmental remediation services
• Bridge construction
• Highway paving
• Industrial power construction

Headquarters

HQ city

Rockford

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Services Revenue: Revenue generated through heavy civil construction projects including infrastructure development, environmental management services, and industrial/power sector construction. Projects are delivered through a combination of self-performance and subcontracting services, supporting public and private sector customers from pre-construction planning through project execution and ongoing maintenance.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

William Charles Construction is a full-service heavy civil contractor that plans, executes, and maintains public and private infrastructure projects. Its core offerings are organized into three service areas—Heavy Civil Construction (highways, bridges, rail yards, intermodal facilities, underground utilities, earthwork, paving, design-build), Environmental Management (landfill services, soil and groundwater remediation, underground storage tank removal, hazardous materials handling, coal tar and industrial waste disposal), and Industrial/Power (full EPC, turnkey design-build, BOP services, structural steel and concrete, heavy rigging, crane services, critical lift planning, certified weld inspection). The company self-performs all or part of any project and delivers work coast-to-coast from its Rockford, Illinois headquarters.

Product overview

William Charles Construction is a full-service heavy civil construction contractor offering three integrated service areas: Heavy Civil Construction (road building, bridge construction, highway paving, earthwork, excavation, rail yards, design-build), Environmental Management (landfill services, soil remediation, underground storage tank removal, hazardous materials handling), and Industrial/Power (full EPC services, structural work, heavy rigging, crane services, critical lift planning). The company manages projects from pre-construction planning through execution and maintenance, capable of self-performing all or part of any project. As a subsidiary of MasTec's Clean Energy and Infrastructure segment, the company operates nationwide with headquarters in Rockford, Illinois and an additional office in Scottsdale, Arizona.

Differentiator

Problem solved

Functional benefit

Products and services

• Heavy Civil Construction Full-service heavy civil construction capabilities for public and private sector clients, including road building and rehabilitation, bridge construction and rehabilitation, highway paving, earthwork, excavation, grading, underground utilities installation, rail yard expansion, intermodal facility construction, design-build services, and site layout and analysis. Delivered as a contracted construction service through direct project acquisition and competitive bidding.
• Environmental Management Specialized environmental remediation and management services for public and private sector clients, including landfill expansion and capping, underground storage tank removal and demolition, soil cleanup, site preparation, hazardous materials handling, soil sampling and stabilization, and water treatment for coal tar and industrial waste disposal. Delivered as a contracted construction and remediation service.
• Industrial / Power Comprehensive industrial and power sector construction services including full EPC, turnkey design-build, BOP and subcontracting services, site development, foundation preparation, structural steel and concrete work, heavy rigging and crane services, critical lift planning, underground pipe excavation, certified weld inspection, and selective demolition. Delivered to industrial and power sector clients as a contracted construction service.

Quantifiable outcome

• EMR of 0.58 — approximately 40% lower than the construction industry average
• +1 more outcomes

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators4 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Ragnar Benson Construction: Sister company under MasTec's IEA umbrella; performs heavy civil, industrial, and general contracting work across the Midwest. Same business model and overlap on public/private bid work.
• Sterling Construction Company: Public heavy civil contractor specializing in highways, bridges, water infrastructure, and site development. Closest comparable by mix of public-infrastructure work, self-perform capability, and contractor scale.
• Granite Construction: Large publicly-traded heavy civil contractor focused on transportation, water resources, and infrastructure markets. Directly competes for the same DOT, tollway, and large public-infrastructure bids that anchor WCC's book.
• Walsh Group: Large privately-held heavy civil and building contractor; direct competitor on highway, bridge, and environmental/earthwork bids in the Midwest and nationally. Mirrors WCC's mix of self-perform civil work and self-perform construction.
• Tutor Perini Corporation: Major heavy civil and nonresidential contractor active in bridges, highways, tunnels, and industrial facilities. Comparable in competing for large, multi-year public infrastructure and industrial/power project scopes.
• Primoris Services Corporation: Infrastructure contractor with utility, energy, and civil operations including site development and industrial/power maintenance work. Closest comparable to WCC's Industrial/Power and environmental practice alongside civil.
• ACC West Coast: Sister company under MasTec providing construction services with overlapping heavy civil/general contracting capabilities; serves as a comparable operating unit within the same corporate family.
• IES Holdings: Provider of electrical and infrastructure services to industrial, power, and commercial clients. Comparable in the Industrial/Power segment where WCC performs EPC and structural/rigging work.

Broad incumbents

• Quanta Services: Largest pure-play infrastructure services firm for electric, gas, and renewables utilities. Adjacent to WCC's industrial/power and utility-related excavation practice as a national-scale benchmark with overlapping prequalification base.
• MasTec, Inc. Parent company through the 2022 IEA acquisition; operates the Clean Energy & Infrastructure segment containing WCC. Larger and more diversified, but overlapping capabilities and bid list for utility and infrastructure customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/william-charles-construction-company-llc

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 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 William Charles Construction