# 37 leading Civil Engineering companies in New York State

Tamtam tracks 37 Civil Engineering companies headquartered in New York State. This list ranks all of them by number of employees on LinkedIn, led by Civil Engineer, NYS Department of Transportation and STV. Their median headcount is 211. Half of them were founded in 1980 or later. The most common headquarters are New York (13), Albany (3) and Rochester (3).

This list features civil engineering companies based in New York State. They range from large organizations like Civil Engineer, which handles planning and designing infrastructure, to mid-sized firms such as STV, specializing in transportation systems and building design. Also present are public sector entities like the NYS Department of Transportation, responsible for coordinating transportation policy, and the New York State Thruway Authority, which operates and maintains the state's thruway system.H&H is another notable firm, providing full-service infrastructure engineering. The companies on this list are predominantly headquartered in New York City and Albany, indicating key hubs for civil engineering activities within the state.

🇺🇸 New York State · 37 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Civil Engineer](https://www.tamtam.ai/c/civil-engineer) (risingindia.org)<br>A company featuring civil engineering projects, from planning and designing infrastructures to maintaining and improving existing structures for public and environmental health | Civil Engineering | 🇺🇸 New York | 17,299 | 2010 |
| 2 | [NYS Department of Transportation](https://www.tamtam.ai/c/nys-department-of-transportation) (dot.ny.gov)<br>The company is responsible for coordinating transportation policy, developing facilities and services, overseeing public safety for railroads and motor carriers, and regulating carriers | Civil Engineering | 🇺🇸 Albany | 4,797 | 1967 |
| 3 | [STV](https://www.tamtam.ai/c/stv) (stvinc.com)<br>A professional services company specializing in transportation systems, building design, water systems, and other essential infrastructure for public and private sector clients | Civil Engineering | 🇺🇸 New York | 4,301 | 1912 |
| 4 | [CHA Consulting, Inc.](https://www.tamtam.ai/c/cha-consulting-inc) (chasolutions.com)<br>Innovative engineering consulting and construction management firm offering a wide range of planning, design, and project management services to clients in North America | Civil Engineering | 🇺🇸 Albany | 2,144 | 1952 |
| 5 | [H&H](https://www.tamtam.ai/c/h-and-h) (hardestyhanover.com)<br>A full-service infrastructure engineering firm with over 135 years of experience specializing in innovative design and complex engineering solutions | Civil Engineering | 🇺🇸 New York | 1,425 | 1887 |
| 6 | [New York State Thruway Authority](https://www.tamtam.ai/c/new-york-state-thruway-authority) (thruway.ny.gov)<br>The company operates and maintains the NYS Thruway System, a vital transportation corridor connecting cities, rural areas, and tourist destinations with cashless tolling | Civil Engineering | 🇺🇸 Albany | 832 | 1954 |
| 7 | [C&S Companies](https://www.tamtam.ai/c/c-and-s-companies) (cscos.com)<br>A nationwide provider of client-focused engineering, architecture, planning, environmental, and construction services, with expertise in a wide range of disciplines | Civil Engineering | 🇺🇸 Syracuse | 692 | 1968 |
| 8 | [U.S. Army Corps of Engineers, North Atlantic Division](https://www.tamtam.ai/c/u-s-army-corps-of-engineers-north-atlantic-division) (nad.usace.army.mil)<br>A team in North Atlantic Division executing diverse engineering projects worldwide to support the military, protect water resources, and enhance the environment | Civil Engineering | 🇺🇸 Fort Hamilton | 634 |  |
| 9 | [Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C.](https://www.tamtam.ai/c/tectonic-engineering-consultants-geologists-and-land-surveyors-d-p-c) (tectonicengineering.com)<br>A full-service professional engineering firm offering civil, geotechnical, structural engineering, environmental services, surveying, program & construction management, and more Competitive salaries and benefits provided | Civil Engineering | 🇺🇸 Mountainville | 524 | 1986 |
| 10 | [MJ](https://www.tamtam.ai/c/mj-halfmoon) (mjteam.com)<br>Multi-disciplinary engineering and land surveying firm with 44 years of experience providing professional services ranging from design and mapping to construction inspection and 3D laser scanning | Civil Engineering | 🇺🇸 Halfmoon | 506 | 1979 |
| 11 | [Department of Public Work](https://www.tamtam.ai/c/department-of-public-work) (linkedin.com)<br>A civil engineering firm located in Owego, NY, specializing in public works projects and infrastructure development in the United States | Civil Engineering | 🇺🇸 Owego | 503 |  |
| 12 | [Parsons Brinckerhoff in the USA (now WSP USA)](https://www.tamtam.ai/c/parsons-brinckerhoff-in-the-usa-now-wsp-usa) (wsp.com)<br>Specializing in providing engineering and professional services to a wide range of markets, connect with us on LinkedIn for updates | Civil Engineering | 🇺🇸 New York | 479 | 1885 |
| 13 | [HAKS](https://www.tamtam.ai/c/haks-new-york) (ataneconsulting.com)<br>A 500-person consulting firm offering construction management, environmental services, engineering design, and more to improve communities through dedication and excellence | Civil Engineering | 🇺🇸 New York | 408 |  |
| 14 | [EnTech](https://www.tamtam.ai/c/entech) (entech.nyc)<br>Multidisciplinary engineering and construction management firm providing design and construction support services for infrastructure and facility projects nationwide | Civil Engineering | 🇺🇸 New York | 408 |  |
| 15 | [Barton & Loguidice](https://www.tamtam.ai/c/barton-and-loguidice) (bartonandloguidice.com)<br>A multidisciplinary consulting firm offering engineering, environmental, planning, and landscape architecture services to public and private clients across several states | Civil Engineering | 🇺🇸 Liverpool | 401 | 1961 |
| 16 | [M&J Engineering](https://www.tamtam.ai/c/m-and-j-engineering) (mjengineers.com)<br>Provider of multi-discipline consulting engineering, environmental, construction, and technology services to a range of clients across various states | Civil Engineering | 🇺🇸 New Hyde Park | 365 | 2004 |
| 17 | [K-water Water Resources Cooperation](https://www.tamtam.ai/c/k-water-water-resources-cooperation) (or.kr)<br>Construction, operation, and management of facilities for comprehensive use and development of water resources, including metropolitan and industrial waterworks, renewable energy, and industrial complexes. | Civil Engineering | 🇺🇸 | 309 | 1967 |
| 18 | [Erdman Anthony](https://www.tamtam.ai/c/erdman-anthony) (erdmananthony.com)<br>An employee-owned firm focusing on infrastructure engineering, offering cost-effective solutions for government and private clients in various markets across the eastern United States | Civil Engineering | 🇺🇸 Rochester | 217 | 1954 |
| 19 | [ATANE](https://www.tamtam.ai/c/atane) (ataneconsulting.com)<br>A multi-disciplinary consulting with 30 years of experience, specializing in construction management, environmental services, engineering design, and more to improve communities | Civil Engineering | 🇺🇸 New York | 211 |  |
| 20 | [Silman](https://www.tamtam.ai/c/silman) (silman.com)<br>Structural engineering firm specializing in new architectural design, renovations, historic preservation, sustainable practices, and collaboration for high-quality structural services | Civil Engineering | 🇺🇸 New York | 161 | 1966 |
| 21 | [Mueser Rutledge Consulting Engineers](https://www.tamtam.ai/c/mueser-rutledge-consulting-engineers) (mrce.com)<br>A leading engineering firm specialized in structural design, geotechnical studies, and underground projects for urban areas, serving various public and private sectors nationwide | Civil Engineering | 🇺🇸 New York | 157 | 1910 |
| 22 | [Hirani Engineering and Land Surveying, D.P.C.](https://www.tamtam.ai/c/hirani-engineering-and-land-surveying-d-p-c) (hiranigroup.com)<br>A civil and structural engineering firm offering land surveying, construction management, and inspection services in various market sectors Certified Disadvantaged/Minority Business Enterprise in NYC | Civil Engineering | 🇺🇸 Hicksville | 154 | 1991 |
| 23 | [Mechanical Engineering World](https://www.tamtam.ai/c/mechanical-engineering-world-new-york)<br>A global learning platform for civil engineering professionals, connecting workers worldwide from countries like USA, UK, Canada, Australia, and more | Civil Engineering | 🇺🇸 New York | 153 |  |
| 24 | [Certerra (Big Apple Group)](https://www.tamtam.ai/c/certerra-big-apple-group) (bigapplegroupny.com)<br>Specializing in construction inspections, material testing, and monitoring, this company serves New York's top engineering and development firms with expert services for 20 years | Civil Engineering | 🇺🇸 Hicksville | 150 | 1982 |
| 25 | [Ravi Engineering & Land Surveying, P.C.](https://www.tamtam.ai/c/ravi-engineering-and-land-surveying-p-c) (ravieng.com)<br>A certified MBE consulting firm offering structural, transportation, environmental, and geotechnical engineering services, construction inspection, special inspections, code evaluations, and land surveying | Civil Engineering | 🇺🇸 Rochester | 147 | 1995 |
| 26 | [Lu Engineers](https://www.tamtam.ai/c/lu-engineers) (luengineers.com)<br>A New York State certified D/MBE company providing planning, design, construction management, and inspection services in Civil, Environmental & Transportation Engineering | Civil Engineering | 🇺🇸 Rochester | 72 | 1980 |
| 27 | [Bidding Enterprise](https://www.tamtam.ai/c/bidding-enterprise) (biddingenterprise.com)<br>The company offers professional construction management services for General & Sub Contractors, including takeoffs, cost estimation, and coverage of various trades | Civil Engineering | 🇺🇸 New York | 71 | 2014 |
| 28 | [JED Engineering & Land Surveying, P.C.](https://www.tamtam.ai/c/jed-engineering-and-land-surveying-p-c) (jedengineering-pc.com)<br>Engineering firm in western Nassau County offering civil engineering, construction management, and resident engineering inspection services to clients in the NY metropolitan area | Civil Engineering | 🇺🇸 Valley Stream | 58 | 2010 |
| 29 | [Gomez and Sullivan Engineers, D.P.C.](https://www.tamtam.ai/c/gomez-and-sullivan-engineers-d-p-c) (gomezandsullivan.com)<br>Specialized engineering and environmental science firm providing solutions to water resource and energy sectors, with a diverse team and core services including hydropower licensing and habitat restoration | Civil Engineering | 🇺🇸 Utica | 58 | 1993 |
| 30 | [Sullivan Engineering, A Rimkus Company](https://www.tamtam.ai/c/sullivan-engineering-a-rimkus-company) (sullivanengineeringllc.com)<br>Full service building envelope consulting firm assisting property owners with technical assistance for successful exterior restoration projects to improve quality of life | Civil Engineering | 🇺🇸 New York | 53 |  |
| 31 | [R&M Engineering](https://www.tamtam.ai/c/r-and-m-engineering) (rmengineering.com)<br>Offering comprehensive engineering services for commercial, industrial, and residential projects on Long Island with expertise in site development, traffic engineering, and wastewater management | Civil Engineering | 🇺🇸 Huntington | 43 | 1999 |
| 32 | [Ancora Engineering + Architecture](https://www.tamtam.ai/c/ancora-engineering-architecture) (ancoraengineering.com)<br>Engineering firm in the New York metropolitan area specializing in demolition, geotechnical investigations, structural design, stability assessments, legal consulting, quality control, and more | Civil Engineering | 🇺🇸 New York | 37 | 2018 |
| 33 | [GdB Geospatial - A SAM Company](https://www.tamtam.ai/c/gdb-geospatial-a-sam-company) (gdbgeospatial.com)<br>A leading geospatial services provider for A/E/C professionals, government agencies, and the general public, recognized for expertise and growth | Civil Engineering | 🇺🇸 Melville | 35 |  |
| 34 | [LGI Forensic Engineering, PC](https://www.tamtam.ai/c/lgi-forensic-engineering-pc) (lgiforensic.com)<br>Provider of engineering services to insurance, legal, and utility sectors Specializing in construction claim consulting, forensic engineering, failure analysis, and investigative engineering services for accurate investigations | Civil Engineering | 🇺🇸 White Plains | 22 | 1952 |
| 35 | [AFM Inspections & Engineering, PLLC](https://www.tamtam.ai/c/afm-inspections-and-engineering-pllc) (afminspections.com)<br>A reputable structural engineering and inspections firm in NYC and Long Island with expertise in design, construction, restoration, inspections, and evaluations for residential and commercial properties | Civil Engineering | 🇺🇸 Floral Park | 6 |  |
| 36 | [ABD Engineers, LLP](https://www.tamtam.ai/c/abd-engineers-llp) (abdeng.com)<br>An engineering and surveying firm offering site design, grading, drainage, stormwater design, construction services, surveying services, and municipal approvals for projects | Civil Engineering | 🇺🇸 Schenectady | 5 | 2015 |
| 37 | [HomePort Engineering, P.C.](https://www.tamtam.ai/c/homeport-engineering-p-c) (homeportinspections.com)<br>A Professional Engineering and Inspection Firm specializing in Residential and Light Commercial properties offering a range of services including inspections, design, and permitting | Civil Engineering | 🇺🇸 East Setauket | 2 | 2015 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

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## The same list elsewhere

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Source: https://www.tamtam.ai/l/civil-engineering-companies-new-york-state