Vulcan Materials Company, together with its subsidiaries, produces and supplies construction aggregates primarily in the United States. It operates through four segments: Aggregates, Asphalt, Concrete, and Calcium. The company provides crushed stones, sand and gravel, sand, and other aggregates; and related products and services that are applied in construction and maintenance of highways, streets, and other public works, as well as in the construction of housing and commercial, industrial, and other nonresidential facilities. It also offers asphalt mix and asphalt construction paving services; ready-mixed concrete; and calcium products for the animal feed, plastics, and water treatment industries. The company was formerly known as Virginia Holdco, Inc. and changed its name to Vulcan Materials Company. Vulcan Materials Company was founded in 1909 and is headquartered in Birmingham, Alabama.

MasTec, Inc., an infrastructure construction company, provides engineering, building, installation, maintenance, and upgrade services for communications, energy, utility, and other infrastructure primarily in the United States and Canada. It operates through five segments: Communications, Clean Energy and Infrastructure, Oil and Gas, Power Delivery, and Other. The company build infrastructure for wireless and wireline/fiber communications; clean energy infrastructure comprising renewable energy power generation; pipeline infrastructure, including natural gas, water, carbon capture sequestration, and other product transport; power delivery services, such as electrical and gas transmission, and distribution systems; industrial and heavy civil infrastructure, including roads, bridges, and rail; and water infrastructure. It also installs electrical and other gas distribution and transmission systems, power generation, power generation, civil and industrial facilities, pipelines, and fiber optic and other cables, as well as install-to-the-home services. In addition, the company offers maintenance and upgrade support services comprising maintenance of customers' distribution facilities, networks, and infrastructure, including communications, power generation, pipeline, electrical distribution and transmission, and civil and industrial and heavy civil infrastructure; service restoration for natural disasters and accidents; and routine replacements and upgrades to overhauls. Its customers include wireless and wireline/fiber service providers, broadband operators, install-to-the-home service providers, public and private energy providers, including renewable and other energy providers, pipeline operators, civil and industrial infrastructure providers, and government entities. MasTec, Inc. was founded in 1929 and is headquartered in Coral Gables, Florida.

Summit Materials, Inc. operates as a vertically integrated construction materials company in the United States and Canada. It operates in three segments: West, East, and Cement. The company offers aggregates, cement, ready-mix concrete, asphalt paving mixes, and concrete products, as well as plastics components. It also provides asphalt paving and related services. In addition, the company operates municipal waste, construction, and demolition debris landfills; and liquid asphalt terminals. The company serves the public infrastructure, and residential and nonresidential end markets. Summit Materials, Inc. was founded in 2009 and is headquartered in Denver, Colorado.

Knife River Corporation, together with its subsidiaries, provides aggregates- led construction materials and contracting services in the United States. It operates through Pacific, Northwest, Mountain, Central, and Energy Services segments. The company mines, processes, and sells construction aggregates, including crushed stone and sand, and gravel; and produces and sells asphalt and ready-mix concrete. It also provides contracting service, such as heavy-civil construction, asphalt and concrete paving, and site development and grading. In addition, the company sells cement, merchandise, and other building materials and related services. The company sells its construction materials to public and private-sector customers, including federal, state, and municipal governments, as well as industrial, commercial and residential developers, and other private parties; and provides its contracting services to public-sector customers for the development and servicing of highways, local roads, bridges, and other public-infrastructure projects. Knife River Corporation was founded in 1917 and is based in Bismarck, North Dakota.

Construction Partners, Inc., a civil infrastructure company, constructs and maintains roadways in Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee. The company provides various products and services to public and private infrastructure projects, such as highways, roads, bridges, airports, and commercial and residential developments. It also engages in manufacturing and distributing hot mix asphalt (HMA) for internal use and sales to third parties in connection with construction projects; and paving activities, including the construction of roadway base layers and application of asphalt pavement. In addition, the company is involved in site development, including the installation of utility and drainage systems; mining aggregates, such as sand, gravel, and construction stones that are used as raw materials in the production of HMA; and distributing liquid asphalt cement for internal use and sales to third parties in connection with HMA production. The company was formerly known as SunTx CPI Growth Company, Inc. and changed its name to Construction Partners, Inc. in September 2017. Construction Partners, Inc. was incorporated in 2007 and is headquartered in Dothan, Alabama.

Tutor Perini Corporation, a construction company, provides diversified general contracting, construction management, and design-build services to private customers and public agencies in the United States and internationally. It operates through three segments: Civil, Building, and Specialty Contractors. The Civil segment engages in the public works construction and the replacement and reconstruction of infrastructure; and offers contracting services, including construction and rehabilitation of highways, bridges, tunnels, mass-transit systems, military defense facilities, and water management and wastewater treatment facilities, as well as provides drilling, foundation, and excavation support for shoring, bridges, piers, roads, and highway projects. The Building segment offers range of services in various specialized building markets, such as hospitality and gaming, transportation, health care, commercial offices, government facilities, sports and entertainment, education, correctional and detention facilities, biotech, pharmaceutical, industrial, and technology. The Specialty Contractors segment provides electrical, mechanical, plumbing, and fire protection systems, as well as heating, ventilation, and air conditioning services (HVAC) for civil and building construction projects in industrial, commercial, hospitality and gaming, and mass-transit end markets. It also offers pre-construction planning and project management services comprising planning and scheduling of the manpower, equipment, materials, and subcontractor services; and self-performed construction services consisting of site work, concrete forming and placement, and steel erection. The company was formerly known as Perini Corporation and changed its name to Tutor Perini Corporation in May 2009. Tutor Perini Corporation was founded in 1894 and is headquartered in Sylmar, California.

Astec Industries, Inc. designs, engineers, manufactures, and markets equipment and components used primarily in road building and related construction activities worldwide. The company operates in two segments, Infrastructure Solutions and Materials Solutions. The Infrastructure Solutions segment offers asphalt plants and related components, heaters, concrete dust control systems, asphalt pavers, vaporizers, concrete material handling systems, screeds, heat recovery units, paste back-fill plants, asphalt storage tanks, hot oil heaters, bagging plants, fuel storage tanks, industrial and asphalt burners and systems, custom batch plants, material transfer vehicles, soil stabilizing-reclaiming machinery, blower trucks and trailers, milling machines, soil remediation plants, wood chippers and grinders, pump trailers, concrete batch plants, control systems, liquid terminals, storage equipment and related parts, construction and retrofits, polymer plants, and concrete mixers, as well as engineering and environmental permitting services. This segment provides its products to asphalt producers; highway and heavy equipment contractors; utility contractors; sand and gravel producers; construction, demolition, recycle and crushing contractors; forestry and environmental recycling contractors; mine and quarry operators; port and inland terminal authorities; power stations; and domestic and foreign government agencies. The Materials Solutions segment designs and manufactures crushing equipment, mobile plants, bulk material handling solutions, vibrating equipment, screening equipment, electrical control centers, modular plants and systems, conveying equipment, plant automation products, portable plants, and mineral processing equipment, as well as offers consulting and engineering services. The company was incorporated in 1972 and is headquartered in Chattanooga, Tennessee.

Southland Holdings, Inc. engages in specialty infrastructure construction business in North America and internationally. The company operates through two segments, Civil and Transportation. The Civil segment designs and constructs water pipelines, pump stations, lift stations, water and wastewater treatment plants, concrete and structural steel, outfall, and tunneling. The Transportation segment designs and constructs bridges, roadways, marine, dredging, ship terminals and piers, and specialty structures and facilities, as well as convention centers, sports stadiums, marine facilities, and ferris wheels. Southland Holdings, Inc. was founded in 1900 and is headquartered in Grapevine, Texas.