AECOM designs, builds, finances and operates infrastructure assets for governments, businesses and organizations. The company provides: planning, consulting, architectural and engineering design services to commercial and government clients in transportation, facilities, environmental, energy, water and government markets; construction services, including building construction and energy, infrastructure and industrial construction; as well as program and facilities management and maintenance, training, logistics, consulting, technical assistance, and systems integration and information technology services, for agencies of the United States government and for other national governments.

Construction Partners is a holding company. Through its wholly owned subsidiaries, the company provides a variety of products and services to infrastructure projects, with a focus on highways, roads, bridges, airports, and commercial and residential sites. The company's primary operations consist of manufacturing and distributing hot mix asphalt (HMA), paving activities, including the construction of roadway base layers and application of asphalt pavement, site development, including the installation of utility and drainage systems, mining aggregates, such as sand and gravel, that are used as raw materials in the production of HMA, and distributing liquid asphalt cement in connection with HMA production.

Granite Construction is a holding company, which delivers infrastructure solutions for public and private clients. The company's segments are: Transportation, which focuses on construction and rehabilitation of roads, pavement preservation, bridges, rail lines, airports and marine ports; Water, which focuses on water-related construction and water management solutions; Specialty, which focuses on construction of various complex projects including infrastructure/site development, mining, public safety, tunnel and power projects; and Materials, which focuses on production of aggregates, asphalt and construction related materials as well as proprietary sanitary and storm water rehabilitation products.

Great Lakes Dredge & Dock is a provider of dredging services. The company provides dredging services in the East, West, and Gulf Coasts of the U.S. and worldwide. The company operates in one operating segment, which is also the company's sole reportable segment and reporting unit. Dredging generally involves the enhancement or preservation of navigability of waterways or the protection of shorelines through the removal or replenishment of soil, sand or rock. Domestically, the company's work generally is performed in coastal waterways and deep water ports. The U.S. dredging market consists of four primary types of work: capital, coastal protection, maintenance and rivers and lakes.

Huron Consulting Group is a consulting firm. The company partners with clients to develop strategies and implement solutions that enable the transformative change its clients need. The company's segments are: Healthcare, which provides care transformation, financial and operational, technology and analytics, and leadership development; Business Advisory, which provides services to large and middle market organizations, not-for-profit organizations, lending institutions, law firms, investment banks and private equity firms; and Education, which provides consulting and technology solutions to higher education institutions and academic medical centers.

IES Holdings is a holding company. The company has four business segments: Commercial & Industrial, which provides electrical and mechanical design, construction, and maintenance services to the commercial and industrial markets in various regional markets and nationwide in certain areas such as the power infrastructure market; Communications, which provides technology infrastructure services to corporations and independent businesses; Infrastructure Solutions, which provides electro-mechanical solutions for industrial operations; and Residential, which provides electrical installation services for single-family housing and multi-family apartment complexes.

KBR provides services and technologies across the asset and program life-cycle within the government services and hydrocarbons industries. The company has three segments: Government Solutions, which provides life-cycle support solutions to defense, space, aviation and other programs and missions for military and other government agencies; Technology Solutions, which combines technologies, equipment and catalyst supply, digital solutions and associated knowledge-based services into a global business for refining, petrochemicals, inorganic and specialty chemicals; and Energy Solutions, which provides life-cycle support solutions across the upstream, midstream and downstream hydrocarbons markets.

MasTec is an infrastructure construction company operating mainly throughout North America across a range of industries. The company's segments include: Communications, which performs engineering, construction, maintenance and customer fulfillment activities related to communications infrastructure; Oil and Gas, which performs engineering, construction and maintenance services on oil and natural gas pipelines and processing facilities; Electrical Transmission, which performs engineering, construction and maintenance of electrical transmission lines and substations; and Power Generation and Industrial, which performs installation and construction of power facilities.

MYR Group is a holding company of electrical construction service providers. Through its subsidiaries, the company serves the electric utility infrastructure, commercial and industrial construction markets located throughout the U.S. and Canada. The company manages its operations through two segments: Transmission and Distribution, which provides services on electric transmission and distribution networks and substation facilities; and Commercial and Industrial, which provides services such as the design, installation, maintenance and repair of commercial and industrial wiring, installation of traffic networks and the installation of bridge, roadway and tunnel lighting.

Primoris Services, through its subsidiaries, provides a range of construction, fabrication, maintenance, replacement, and engineering services to main public and private utilities, petrochemical companies, energy companies, municipalities, state departments of transportation and other customers. The company installs, replaces, repairs and rehabilitates natural gas, refined product, water and wastewater pipeline systems; large diameter gas and liquid pipeline facilities; electric utility systems; and heavy civil projects, earthwork and site development. The company also constructs mechanical facilities and other structures. Finally, the company provides process and product engineering services.

Sterling Construction is a construction company that focuses in heavy civil construction and infrastructure rehabilitation as well as residential construction projects. The company operates primarily in Arizona, California, Colorado, Hawaii, Nevada, Texas and Utah, as well as other states. The company's heavy civil construction projects include highways, roads, bridges, airfields, ports, light rail, water, wastewater and storm drainage systems, foundations for multi-family homes, commercial concrete projects and parking structures. Residential construction projects include concrete foundations for single-family homes.