50 Largest general contractors in the United States

The U.S. construction sector is one of the most competitive industries in the country, which makes its largest players worth watching. The firms at the top of the market range from global engineering-and-construction companies building energy and infrastructure megaprojects to employee-owned builders that self-perform work on the ground.

This post ranks the 50 largest general contractors in the United States by their position on Engineering News-Record’s 2026 Top 400 Contractors list, which ranks firms by their 2025 construction revenue. Every revenue figure and rank below comes from ENR’s published list; sources are linked throughout.

The 50 largest U.S. general contractors

Here are the 50 largest general contractors in the United States on ENR’s 2026 Top 400, ranked by national position.

Source: ENR 2026 Top 400 Contractors (2025 revenue).

The top 10 largest general contractors in the U.S.

Here is a closer look at the ten largest contractors on the list.

Turner Construction Co.

Headquarters: New York City, New York 2025 revenue (ENR 2026 Top 400): $28,299.3 million — national rank #1

Turner is the largest general contractor in the United States, founded in 1902 by Henry C. Turner and now operating as a North America-based international construction-services firm. The company works across most major building markets and is known for large, technically demanding projects.

Turner’s services include:

• preconstruction
• construction management
• project management
• lean construction and Virtual Design & Construction (VDC)
• self-perform operations
• supply chain and risk management

The company has extensive experience servicing the following sectors:

• healthcare
• education
• commercial and office
• sports and aviation
• pharmaceutical and life sciences
• data centers and green building

Turner was named the No. 1 green builder by Engineering News-Record for the 18th consecutive year. Recent work includes an expanded Meta data center in Richland Parish, Louisiana and a $158 million California state emergency operations center awarded in 2024.

Bechtel

Headquarters: Reston, Virginia 2025 revenue (ENR 2026 Top 400): $19,523.0 million — national rank #2

Bechtel is a privately held global engineering, procurement, and construction (EPC) firm founded in 1898, employing roughly 55,000 people across nearly 50 countries. The company delivers first-of-a-kind energy, nuclear, infrastructure, and national-security megaprojects, and consistently ranks second among U.S. contractors.

Bechtel’s services include:

• engineering
• procurement
• construction
• project management
• safety and quality management
• sustainability and environmental delivery

The company has extensive experience servicing the following sectors:

• energy, including LNG
• nuclear power
• infrastructure
• national defense and security
• manufacturing and technology
• mining and critical minerals

Two of Bechtel’s largest current undertakings show its range: the firm is building the Tennessee Valley Authority’s small modular reactor at the Clinch River site near Oak Ridge, Tennessee, a project valued at up to $5.4 billion, and it holds $9 billion in executed construction contracts for Rio Grande LNG Trains 4 and 5 in Brownsville, Texas.

STO Building Group

Headquarters: New York, New York 2025 revenue (ENR 2026 Top 400): $15,571.0 million — national rank #3

STO Building Group is a privately owned family of construction-management and general-contracting brands — including Structure Tone, Layton Construction, LF Driscoll, Pavarini, and BCCI — that share resources while operating under distinct regional identities. Founded in 1971 as Structure Tone, a Manhattan interiors specialist, the company now employs more than 5,700 people across 50-plus offices in the United States, Canada, the United Kingdom, and Ireland.

STO’s services include:

• construction management and general contracting
• preconstruction
• interior fit-outs and renovation
• site-selection analysis and constructability review
• new building construction
• building-infrastructure upgrades and modernization

The company has extensive experience servicing the following sectors:

• commercial and workplace interiors
• healthcare and life sciences
• education
• mission critical and data centers
• industrial
• retail

STO Building Group was named ENR New York’s 2026 Contractor of the Year. Its recent work includes the 1.2-million-square-foot Walt Disney Company headquarters fit-out at 7 Hudson Square in New York, recognized on the group’s awards roster.

Kiewit

Headquarters: Omaha, Nebraska 2025 revenue (ENR 2026 Top 400): $15,282.1 million — national rank #4

Kiewit is one of North America’s largest employee-owned construction and engineering organizations, founded in 1884 and employing roughly 34,500 craft and staff. The company delivers heavy civil, transportation, power, and industrial megaprojects across the continent.

Kiewit’s services include:

• heavy civil and transportation infrastructure
• power generation and energy EPC
• water and wastewater infrastructure
• industrial and data center construction
• progressive design-build and CM/GC delivery
• mining and marine construction

The company has extensive experience servicing the following sectors:

• transportation
• power and energy
• water and environmental
• industrial and manufacturing
• data centers
• oil, gas, and chemical

Kiewit was selected in 2025 to design and build the 4.5-gigawatt Homer City Energy Campus near Pittsburgh — a natural gas power plant co-located with a data center complex — and was named CM/GC for the I-55 Mississippi River bridge replacement at Memphis. The Kiewit–McCarthy joint venture on Phoenix’s Northwest Extension Phase II light rail earned an ENR 2024 Best of the Best award in the airport/transit category.

The Whiting-Turner Contracting Co.

Headquarters: Baltimore, Maryland 2025 revenue (ENR 2026 Top 400): $14,675.9 million — national rank #5

Whiting-Turner is one of the largest privately held general contractors and construction managers in the United States, founded in 1909 by MIT classmates G.W.C. Whiting and LeBaron Turner. The firm employs roughly 5,000 people and is known for mission-critical, healthcare, and large commercial work.

Whiting-Turner’s services include:

• general contracting
• construction management
• design-build
• preconstruction
• self-perform concrete and site work
• integrated project delivery

The company has extensive experience servicing the following sectors:

• data centers and mission critical
• healthcare
• higher education and K–12
• commercial office and mixed-use
• retail and hospitality
• life sciences and advanced manufacturing

Recent projects reflect that mix: Whiting-Turner is building a 290,000-square-foot Google data center in Wasco County, Oregon and broke ground in 2024 on the $540 million University of Maryland Shore Regional Medical Center in Easton, Maryland.

MasTec

Headquarters: Coral Gables, Florida 2025 revenue (ENR 2026 Top 400): $14,299.2 million — national rank #6

MasTec is a publicly traded infrastructure engineering and construction company founded in 1994, with more than 30,000 professionals across North America. Rather than vertical building work, the firm specializes in the infrastructure that carries energy and data — power delivery, pipelines, renewables, and telecommunications.

MasTec’s services include:

• power transmission, distribution, and substation construction
• oil and gas pipeline construction
• renewable energy (solar and wind) EPC
• communications and telecom build-out
• heavy civil and industrial infrastructure
• engineering, installation, and maintenance

The company has extensive experience servicing the following sectors:

• power delivery and electric utilities
• clean energy and renewables
• oil and gas and pipeline
• communications and telecom
• water and environmental infrastructure
• industrial

A MasTec transmission subsidiary was awarded construction of NV Energy’s roughly $4.3 billion Greenlink transmission program, a 700-mile 525-kilovolt buildout across Nevada. The company reported record revenue and backlog in 2025, reflecting demand across its power and clean-energy segments.

DPR Construction

Headquarters: Redwood City, California 2025 revenue (ENR 2026 Top 400): $14,036.0 million — national rank #7

DPR is a self-performing general contractor and construction manager founded in 1990 by Doug Woods, Peter Nosler, and Ron Davidowski — the D, P, and R of the name. One of the largest employee-owned builders in the country, DPR employs roughly 13,500 people and concentrates on complex, technically demanding projects.

DPR’s services include:

• self-perform general contracting and construction management
• preconstruction
• large-scale new construction
• tenant improvements and special projects
• Virtual Design & Construction and prefabrication

The company has extensive experience servicing the following sectors:

• advanced technology and mission critical (data centers)
• life sciences
• healthcare
• higher education
• commercial

DPR was selected to build the Meta AI data center in Richland Parish, Louisiana, described as Meta’s largest data center to date, and is delivering an Eli Lilly pharmaceutical manufacturing plant in Research Triangle Park, North Carolina.

HITT Contracting

Headquarters: Falls Church, Virginia 2025 revenue (ENR 2026 Top 400): $13,036.6 million — national rank #8

HITT is a national, family-owned general contractor founded in 1937 as HITT Decorating Co. by Warren and Myrtle Hitt in Arlington, Virginia. Working across 16 offices, the firm built its name on commercial interiors and fit-outs and has grown into one of the country’s leading mission-critical and data center builders.

HITT’s services include:

• core and shell base building
• repositioning, renovation, and adaptive reuse
• tenant fit-outs and interiors
• mission critical and data center construction
• service work and special projects

The company has extensive experience servicing the following sectors:

• mission critical (data centers)
• healthcare
• life sciences
• government and secure spaces
• higher education
• office and hospitality

HITT broke ground in 2025 on Microsoft’s Alviso data center campus in San Jose, a 48-megawatt greenfield build. The firm was named the No. 1 data center contractor by ENR and the top data center construction firm by Building Design+Construction in 2025.

Fluor

Headquarters: Irving, Texas 2025 revenue (ENR 2026 Top 400): $10,888.3 million — national rank #9

Fluor is one of the largest engineering, procurement, and construction firms in the world, founded in 1912 and employing roughly 23,500 people. The publicly traded company builds and maintains large, complex facilities for energy, industrial, infrastructure, nuclear, and government clients worldwide.

Fluor’s services include:

• engineering and design
• procurement
• fabrication and modularization
• construction
• maintenance and program management

The company has extensive experience servicing the following sectors:

• energy, including oil and gas, LNG, and refining
• advanced nuclear
• mining and metals
• transportation and rail infrastructure
• advanced technology and data centers
• government

The Fluor–Walsh joint venture reached substantial completion on Chicago’s $2.1 billion Red and Purple Line Modernization, the largest capital project in Chicago Transit Authority history, and the firm entered a long-term program management agreement with Saudi Aramco in 2026. Fluor also holds ENR’s No. 1 ranking among industrial-sector contractors.

Mortenson

Headquarters: Minneapolis, Minnesota 2025 revenue (ENR 2026 Top 400): $10,845.4 million — national rank #10

Mortenson is a U.S. family-owned builder and developer founded in 1954, employing roughly 7,000 people. The company is strong in sports and entertainment venues and healthcare, and ranks among the country’s top renewable-energy contractors for wind, solar, and storage work.

Mortenson’s services include:

• general contracting and construction management with self-perform capability
• preconstruction and budgeting
• design-build
• program management and turn-key development
• engineering, design, and equipment procurement for renewables

The company has extensive experience servicing the following sectors:

• sports and entertainment
• healthcare
• renewable energy — wind, solar, and storage
• data centers and mission critical
• commercial and higher education

Mortenson completed the $202.5 million Progressive Field renovations for the Cleveland Guardians in 2025 and delivered the St. Anthony North hospital tower in Westminster, Colorado the same year. The firm was ranked No. 8 on Solar Power World’s 2025 Top Solar Contractors list.

Notable mentions

Two of the firms on this list plan their workforce with Bridgit. Gilbane Building Co. (#19, Providence) traces its roots to 1873 and has grown into one of the world’s largest general contractors. As it scaled, Gilbane lacked real-time visibility into its workforce across regions; it rolled Bridgit out company-wide in 2024, integrated it with CMiC, Unanet, and Procore, and used it to unlock resource sharing across its offices. Suffolk Construction (#23, Boston) manages one of the largest project portfolios in the country; staffing a 3,000-plus-person organization from a spreadsheet did not scale, so Suffolk built connected workforce planning on Bridgit, tying people data into its preconstruction process.

Bridgit is the workforce planning software of choice for construction companies in the United States

Bridgit is the workforce planning platform trusted by contractors across the United States. With Bridgit, construction teams can:

• run workforce planning sessions from anywhere
• forecast resource demand across the pipeline
• see utilization across the whole workforce at a glance
• keep project and people data in one source of truth

Learn more about Bridgit, or book a demo to see it on your own projects.

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