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.

Sterling Infrastructure, Inc. engages in the provision of e-infrastructure, transportation, and building solutions primarily in the United States. It operates through three segments: E-Infrastructure Solutions, Transportation Solutions, and Building Solutions. The E-Infrastructure Solutions segment provides site development services for the blue-chip end users in the e-commerce distribution center, data center, manufacturing, warehousing, and power generation sectors. The Transportation Solutions segment is involved in the development of infrastructure and rehabilitation projects for highways, roads, bridges, airports, ports, rail, and storm drainage systems for the departments of transportation in various states, regional transit authorities, airport authorities, port authorities, water authorities, and railroads. The Building Solutions segment provides residential and commercial concrete foundations for single-family and multi-family homes, parking structures, elevated slabs, other concrete work for developers and general contractors, as well as provides plumbing services for residential builds. The company was formerly known as Sterling Construction Company, Inc. and changed its name to Sterling Infrastructure, Inc. in June 2022. Sterling Infrastructure, Inc. was founded in 1955 and is headquartered in The Woodlands, Texas.

Granite Construction Incorporated operates as an infrastructure contractor in the United States. It operates through two segments: Construction and Materials segments. The Construction segment engages in the construction and rehabilitation of roads, pavement preservation, bridges, rail lines, airports, marine ports, dams, reservoirs, aqueducts, infrastructure, and site development for use by the public and water-related construction for municipal agencies, commercial water suppliers, industrial facilities, and energy companies; and construction of various complex projects, including infrastructure/site development, mining, public safety, tunnel, solar storage, and power related projects. The Materials segment is involved in the production of aggregates, asphalt concrete, liquid asphalt, and recycled materials production for internal use in our construction projects and sale to third parties. It also offers site preparation, mining, and infrastructure services for residential development, energy development, commercial and industrial sites, railways, residential development, and energy development; and provides construction management professional services. It serves federal agencies, state departments of transportation, local transit authorities, county and city public works departments, school districts and developers, utilities, contractors, landscapers, manufacturers of products requiring aggregate materials, retailers, homeowners, farmers, brokers, and private owners of industrial, commercial, and residential sites. Granite Construction Incorporated was incorporated in 1922 and is headquartered in Watsonville, California.

Primoris Services Corporation, a specialty contractor company, provides a range of specialty construction, fabrication, maintenance, replacement, and engineering services in the United States and Canada. The company operates through Utilities and Energy/Renewables segments. The Utilities segment offers installation and maintenance services for new and existing natural gas distribution systems, electric utility distribution and transmission systems, and communications systems. The Energy/Renewables segment provides a range of services, including engineering, procurement, and construction, as well as retrofits, highway and bridge construction, demolition, site work, soil stabilization, excavation, flood control, upgrades, repairs, outages, and maintenance services to renewable energy and energy storage, renewable fuels, petroleum, and petrochemical industries, as well as state departments of transportation. It also offers pipeline construction and maintenance, and storage services; pipeline facility, and integrity services. Primoris Services Corporation was founded in 1960 and is headquartered in Dallas, Texas.

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.

Orion Group Holdings, Inc. operates as a specialty construction company in the building, industrial, and infrastructure sectors in the United States, Alaska, Hawaii, Canada, and the Caribbean Basin. It operates in two segments, Marine and Concrete. The company provides marine construction services, including construction, restoration, dredging, maintenance, and repair of marine transportation facilities and pipelines, bridges and causeways, and marine environmental structures. Its marine transportation facility projects comprise cruise ship port facilities, private terminals, special-use navy terminals, recreational use marinas and docks, and other marine-based facilities, as well as building or rehabilitating public port facilities for container ship loading and unloading. The company also offers on-going maintenance and repair, inspection, emergency repair, and demolition and salvage services. Its marine pipeline service projects include the installation and removal of underwater buried pipeline transmission lines; the installation of pipeline intakes and outfalls for industrial facilities; the construction of pipeline outfalls for wastewater and industrial discharges; river crossing and directional drilling; the creation of hot taps and tie-ins; and inspection, maintenance, and repair services. The company's bridge and causeway projects include the construction, repair, and maintenance of overwater bridges and causeways, as well as the develops fendering systems in marine environments. The company also provides specialty services, such as design, salvage, demolition, surveying, towing, diving and underwater inspection, excavation, and repair services. In addition, it offers elevated concrete pouring for columns, elevated beams, and structural walls; and light commercial services comprising slabs, sidewalks, ramps, and tilt walls. The company was founded in 1994 and is headquartered in Houston, Texas.

L.B. Foster Company provides engineered and manufactured products and services for the building and infrastructure projects in the United States, Canada, the United Kingdom, and internationally. It operates through two segments: Rail, Technologies, and Services; and Infrastructure Solutions. The Rail, Technologies, and Services segment offers new rail to passenger and short line freight railroads, industrial companies, and rail contractors, as well as used rails; rail accessories, such as rack spikes, bolts, angle bars, tie plates, and other products; insulated rail joints and related accessories; fixation fasteners, coverboards, and special accessories; and trackwork products. This segment also provides engineered concrete railroad ties, friction management products and application systems, railroad condition monitoring systems and equipment including wheel impact load detection systems, wayside data collection and management systems, and rockfall, flood, earthworks, and bridge strike monitoring; and aftermarket services. The Infrastructure Solutions segment manufactures precast concrete products for use as restrooms, concession stands, and protective storage buildings under the CXT brand for national, state, and municipal parks; and manufactures sounds walls, bridge beams, box culverts, septic tanks, and other custom pre-stressed and precast concrete products. This segment also provides steel bridge products; corrosion protection solutions; concrete-reinforced steel grid decking, open steel grid deck, aluminum bridge railing, and stay-in-place steel bridge forms; cuts, threads, and paints pipe; threading services for water well applications; protective pipeline coating services; and turnkey solutions for metering and injection systems for oil and gas markets. L.B. Foster Company was founded in 1902 and is headquartered in Pittsburgh, Pennsylvania.

Gulf Island Fabrication, Inc., together with its subsidiaries, operates as a fabricator of steel structures and modules in the United States. It operates through Services, Fabrication, and Shipyard divisions. The company provides maintenance, repair, construction, scaffolding, coatings, welding enclosures, and other specialty services on offshore platforms, inland structures, and industrial facilities; services required to connect production equipment and service modules, and equipment on offshore platforms; project management and commissioning services; hookup services; and civil construction and staffing services to the industrial and energy sectors, as well as undertakes municipal and drainage projects, including pump stations, levee reinforcement, bulkheads, and other public works. It also fabricates modules, skids, and piping systems for onshore refining, petrochemical, liquified natural gas (LNG), industrial, and offshore facilities; foundations, secondary steel components, and support structures for alternative energy developments and coastal mooring facilities; offshore production platforms and associated structures, including jacket foundations, piles, and topsides for fixed production and utility platforms, as well as hulls and topsides for floating production and utility platforms; and other complex steel structures and components. In addition, the company fabricates newbuild marine vessels and provides marine repair and maintenance services. The company serves international energy producers; refining, petrochemical, LNG, industrial, and power operators; and engineering, procurement, and construction companies. Gulf Island Fabrication, Inc. was incorporated in 1985 and is headquartered in The Woodlands, Texas.