Specialized Heavy and Civil Engineering Construction NAICS 237990

Unlock access to the full platform with more than 900 industry reports and local economic insights.
Get access to this Industry Profile including 18+ chapters and more than 50 pages of industry research.
Industry Summary
The 4,500 specialized heavy and civil engineering construction firms engage in a broad range of non-residential construction work. Major project categories include mass transit (railroads, subways); marine construction (dredging, navigational channels, locks, docks); tunnels; outdoor recreational areas (athletic fields, parks, trails, golf courses, campgrounds); conservation and development (dams, drainage canals, flood control); and harbor and port facilities.
Uneven, Seasonal Demand
Demand for specialized heavy and civil engineering construction services is uneven and seasonal.
Dependence on Government Funding
Demand for specialized heavy and civil engineering construction services is driven by public construction projects, which rely on government funding.
Recent Developments
Aug 6, 2025 - Twenty States Sue to Protect FEMA Disaster Mitigation Funding
- In July, twenty state attorneys general filed a federal lawsuit challenging the Trump administration’s elimination of FEMA’s Building Resilient Infrastructure and Communities (BRIC) program, according to Engineering News-Record. The BRIC program helps fund projects to protect cities and coasts from flash flooding, storm surges, and other natural disasters caused by extreme weather. The suit argues that FEMA officials lacked legal authority to shut down the program and violated the Constitution by redirecting funds appropriated by Congress. Since its creation in 2018, BRIC has distributed over $5 billion to help cities prepare for extreme weather events. States claim the program’s termination has forced communities to delay or cancel hundreds of projects, increasing vulnerability to natural disasters.
- Spending related to transportation projects - including rail, airports, and ports – is projected to rise 4% in 2025, 4% in 2026, 6% in 2027 and 2028, and 5% in 2029, according to FMI’s third-quarter 2025 North American Engineering and Construction Outlook. Public spending accounts for about two-thirds of transportation investments, and key infrastructure focus areas include air terminals and ports. Major projects include a cross-border freight railway between Laredo, Texas, and Monterrey, Mexico, to improve logistics, air traffic control modernization programs, and port automation. Spending on conservation and development projects is forecast to decline by 1% in 2025, then grow by 1% in 2026, 5% in 2027, and 6% in 2028 and 2029.
- The total value of construction put in place decreased 0.4% in June compared to May, according to the US Census Bureau. Conservation and development spending dropped 2.8%, and water supply projects saw a 0.1% drop. Spending on sewage and waste disposal decreased by 0.2%. Associated Builders and Contractors (ABC) Chief Economist Anirban Basu said, “Nonresidential construction spending declined in June and has now contracted in 6 of the past 7 months.” He went on to say, “While ABC members remain optimistic about the second half of the year, according to ABC’s Construction Confidence Index, recent data pertaining to both the construction industry and the broader economy suggest weakness could persist in the months to come.”
- Higher steel and aluminum tariffs could increase specialized heavy and civil construction project costs. On May 30, the Trump administration announced it would double the tariffs on all US steel and aluminum imports to 50%, according to Reuters. The increase took effect on June 4. The administration claims the higher duties will protect the US steel and aluminum industries. On May 29, the US Court of International Trade (CIT) ruled that the Trump Administration overstepped its authority in levying widespread tariffs and voided most of them, according to the Wall Street Journal. The following day, the US Court of Appeals for the Federal Circuit paused the CIT ruling pending further arguments. The Supreme Court could ultimately decide the case. In the meantime, the tariffs remain in place. Steel and aluminum tariffs were not part of the CIT ruling.
Industry Revenue
Specialized Heavy and Civil Engineering Construction

Industry Structure
Industry size & Structure
The average specialized heavy and civil engineering construction company operates out of a single location, employs about 18 workers, and generates $8.2 million in annual revenue.
- The specialized heavy and civil engineering construction industry consists of about 4,500 firms that employ almost 82,500 workers, and generate over $35 billion in annual revenue.
- The industry is concentrated at the top and fragmented at the bottom. The top 50 companies account for about 48% of industry revenue.
- Large firms include Herzog Contracting (rail), Railworks, Railroad Construction Company, Orion Group Holdings (water resources), and Great Lakes Dredge & Dock Corporation (water resources).
- The US is a “closed” market for dredging with government regulations restricting dredging operations in US waters to US-owned and operated vessels staffed by US crews.
Industry Forecast
Industry Forecast
Specialized Heavy and Civil Engineering Construction Industry Growth

Vertical IQ Industry Report
For anyone actively digging deeper into a specific industry.
50+ pages of timely industry insights
18+ chapters
PDF delivered to your inbox