Our Companies

Learn about the companies that make up Clark Group.

construction equipment

Building & Infrastructure

Clark Construction

Clark1

Clark Construction is one of the largest building and infrastructure companies in the United States. The company’s portfolio spans every major building market, from public to private, corporate to cultural, education to entertainment, and the infrastructure connecting it all – power, transit, water, and roadways. 

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Guy F. Atkinson Construction

Atkinson

Guy F. Atkinson Construction is one of the nation’s most experienced heavy civil contractors. Founded in 1926, Atkinson has a portfolio of projects across markets that include highways and bridges, mass transit, mining, and tunneling. 

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Shirley Contracting Company

Shirley

Shirley Contracting Company provides comprehensive transportation, heavy civil, and site construction solutions for public and private entities in the Mid-Atlantic. Since 1974, Shirley has improved the region’s infrastructure by designing and constructing countless miles of roads and hundreds of bridges. 

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C3M Power Systems

C3M

C3M Power Systems is a leading electrical contractor that constructs, rehabilitates, and maintains electrical and specialty systems for railways, airports, highways, and utilities nationwide.

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Clark Civil

Clark Civil

Clark Civil is a leading contractor specializing in all aspects of civil and heavy civil construction. With expertise ranging from self-performance to comprehensive design-build delivery, Clark Civil works with clients to deliver safe and innovative infrastructure that strengthens our communities.

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Clark Concrete

Clark Concrete

Clark Concrete self-performs structural concrete work throughout the Mid-Atlantic region. The company offers a wide range of services, including scheduling and budgeting of conceptual documents, formwork design and installation, and concrete pouring and finishing.

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Clark Foundations

Clark Foundations

Clark Foundations delivers advanced engineering solutions for the most sophisticated excavation support systems. With more than 50 years of experience providing preconstruction, estimating, and self-perform construction services for support of excavation and deep foundations work, Clark Foundations provides project certainty.

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Clark Water

Clark Water

Serving as a trusted construction partner to both public and private sector clients, Clark Water specializes in the delivery of water and wastewater infrastructure projects. Clark Water provides a full range of custom planning, design, construction, and construction management services to meet the specialized needs of the community.

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CFP

cfp

CFP is an award-winning general contractor that specializes in building all things multi-family residential. The company's 60 years of experience delivering projects across the Mid-Atlantic region features a range of product types, including office-to-residential conversions, affordable housing, and market-rate developments. With deep roots in the real estate development space, CFP builds through the lens of an owner to deliver high-quality assets that delight residents and create long-term value.

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Clark Technologies

Clark technologies (logo) is a leading builder of data centers and mission-critical facilities

Clark Technologies is a leading builder of data centers and mission-critical facilities. From the earliest stages of project development to commissioning and start-up, Clark understands the nuances of how to successfully deliver a facility where downtime is not an option. By combining technical expertise, diverse self-perform capabilities, and a novel speed-to-market approach, Clark delivers certainty and quality to clients with complex technology and operational system requirements.

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Tekton

Tekton Logo

Tekton is a full-service, self-perform construction firm specializing in rough carpentry, make-ready services, mass timber, and a variety of other construction scopes.

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Asset Solutions

Align Capital Solutions

Align

Align Capital Solutions provides creative financing to clients developing the physical assets that meet the needs of their communities. Align’s agnostic approach and deep relationships with capital providers allow the company to develop innovative and flexible capital structures that satisfy risk, credit, timing, and control considerations.

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Altura Associates

Altura

Altura is a smart buildings consultant that creates solutions that maximize asset value, healthy spaces, and positive environmental impact. Supported by robust engineering and in-house software, the company integrates engineering, controls, and analytics from strategy through implementation and optimization.

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Carta Advisors

Carta

Carta is an advisory firm dedicated to creating certainty in successfully delivering large capital projects and creating extraordinary experiences for teams. Carta’s services focus on stakeholder alignment, building solutions, and risk management.

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Coda

Coda

Coda is a technology company that delivers solutions to accelerate the discovery and availability of key knowledge, helping lower costs and optimize schedules. By pairing construction data with decades of building expertise, the Coda team elevates virtual design and construction to provide meaningful, accurate, and actionable insights.

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Edgemoor Infrastructure & Real Estate

Edgemoor

Edgemoor Infrastructure & Real Estate is a leading developer of public buildings and infrastructure. Through customized public-private partnerships and real estate solutions, Edgmoor reduces client risk in the development process and minimizes the burden on management resources while optimizing project functionality, aesthetics, costs, flexibility, and accountability.

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Fractile Studio

Fractile

Fractile Studio is a leading construction technology firm that provides best-in-class BIM/VDC and project engineering services to improve and accelerate project performance. Fractile's experienced team acts as accountable partners ready to flex skilled technical resources and workflows to meet clients' digital processing needs.

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S2N Technology Group

S2N

S2N designs and deploys robust technology solutions across healthcare, higher education, and arts and entertainment markets. The S2N team brings end-to-end expertise in technology and a focus on helping clients’ shape and realize their technology vision to achieve critical business needs and drive end-user satisfaction.

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Leadership

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Bill Headshot

Bill Calhoun

EVP and Vice Chairman, Clark Construction Group

Bill Calhoun, executive vice president and vice chairman, drives Clark Construction’s strategic direction, including the acquisition of new work and identification of new and emerging markets.

Working with Clark’s divisions and business units, Bill fosters long-term client relationships and matches corporate resources with project needs to meet project challenges and deliver successful results.

Bill began his career at Clark in 1983 and has overseen the delivery of numerous high-profile projects across the country, including:

  • National Geospatial-Intelligence Agency (NGA) New Campus East
  • Brooke Army Medical Center
  • Capital One Arena
  • Douglas A. Munro Coast Guard Headquarters
  • New Single Terminal at Kansas City International Airport
  • Washington State Convention Center Addition
  • Walter Reed National Military Medical Center

Bill earned his bachelor's degree in civil engineering from the Georgia Institute of Technology and completed the Harvard Business School Advanced Management Program.

Bill is a steering committee member with the Construction Industry Ethics & Compliance Initiative and a board member with the National Academy of Construction. He actively supports industry and philanthropic organizations, including the Construction Industry Round Table and So Others Might Eat (SOME).

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Robby Moser Jr

Robert D. Moser Jr.

CEO, Clark Construction Group

Robert D. Moser Jr. is the chief executive officer of Clark Construction. In this role, provides executive direction for Clark’s national operations and asset solutions, which range from real estate development and financing to construction and technology integration.

For Clark’s 5,100 team members, Robby fosters a company culture that thrives on innovation, integrity, relationships, and community involvement.

Under his leadership, Clark has delivered projects that define the local and national landscape, including the National Museum of African American History and Culture, Chase Center, Inova Schar Cancer Institute, the New Single Terminal at Kansas City International Airport, David Geffen Galleries at LACMA, and the I-495 Express Lanes Northern Extension (495 NEXT).

Robby ensures an exceptional client experience by linking Clark’s superior product delivery to each partner's strategic objectives. By prioritizing growth opportunities and fostering a culture of leadership, he ensures the Clark team is uniquely equipped to execute with excellence.

He earned his bachelor’s degree in civil engineering from the Virginia Polytechnic Institute and State University.