The geotechnical engineering industry in Connecticut is a dynamic and essential sector, servicing a broad range of projects, from infrastructure development to environmental conservation. Companies in this field offer solutions such as geotechnical investigations, foundation repairs, and coastal engineering practices, among others. With technological advancements and innovative methods, these companies contribute significantly to sustainable development. The geotechnical engineering industry in Connecticut is expected to continue growing, driven by increase in construction activity and need for environmental protection.


Top 20 geotechnical engineering companies in Connecticut

1. GEODesign, Inc.

GEODesign, Inc. is a geotechnical engineering firm that provides innovative engineering solutions for complex projects. With exceptional client service, they have successfully worked on various projects in CT, NJ, NY, VT, and OR. Their expertise in geotechnical engineering allows them to deliver solutions that minimize track outages and impacts on operations. They have a strong track record of restoring functional infrastructure and have been praised for their excellence and responsiveness.


2. Soiltesting INC

Soil Testing, Inc. specializes in geotechnical and environmental studies. They offer services such as geotechnical investigations, foundation settlement correction and repairs, and installation of piles, anchors, and tiebacks. With their expertise and equipment, they provide subsurface exploration for various projects. They also have experience in drilling methods and offer geotechnical instrumentation. Soil Testing, Inc. has been a reliable drilling contractor since 1958, serving residential, commercial, industrial, and municipal projects.


3. RACE Coastal Engineering

RACE Coastal Engineering is a professional services firm specializing in modern coastal engineering practices. They provide responsive solutions where water meets land, enhancing quality of life, experience, property, and infrastructure. Their expertise includes geotechnical and structural engineering, coastal engineering, shoreline restoration and protection, inspections and rehabilitation of structures, marine structure design and planning, environmental permitting, hydrographic surveys, dredging planning and design, and marine construction administration.


4. Test-Con Incorporated

  • Website: test-con.com
  • Headquarters: Danbury, Connecticut, United States
  • Founded: 1995
  • Headcount: 11-50
  • LinkedIn

Test-Con Incorporated is a Connecticut-based independent construction material-testing and engineering firm that provides a wide range of services such as testing and inspection of concrete, soil, asphalt, masonry, and other components.


5. Down To Earth Consulting, LLC

Down to Earth Consulting provides geotechnical and geoenvironmental engineering services for commercial, residential, industrial, institutional, and infrastructure projects.


6. Mekael Engineering & Consulting, LLC

  • Website: mekaeleng.com
  • Headquarters: New Haven, Connecticut, United States
  • Founded: 2013
  • Headcount: 1-10
  • LinkedIn

Providing Structural & Geotechnical Engineering Services for our clients with integrity, quality, vision , and innovation .


7. Siefert Associates, LLC

Siefert Associates is a premier construction engineering firm that specializes in structural, demolition, erection, geotechnical, and accelerated bridge construction engineering. They provide high-quality, innovative solutions for fast-paced infrastructure improvement projects.


8. CLA Engineers

CLA Engineers is a consulting firm specializing in all aspects of civil engineering. They provide services in civil, structural, inspection, and surveying for various clients in the private, institutional, public, commercial, and industrial sectors.


9. The Quill Engineering Group

The Quill Group is a full service consulting firm specializing in civil engineering, land surveying, and specialized materials testing laboratory for public and private sector clients.


10. VN Engineers, Inc.

  • Website: vnengineers.com
  • Headquarters: North Haven, Connecticut, United States
  • Founded: 1983
  • Headcount: 51-200
  • LinkedIn

VN Engineers is a multi-disciplined civil engineering consulting firm specializing in infrastructure, transportation, traffic, highway, planning, rail design, and construction inspection.


11. GeoQuest

  • Website: geoquestco.com
  • Headquarters: Bloomfield, Connecticut, United States
  • Headcount: 1-10

GeoQuest was founded in 1993 by Marc Casslar. Based in Bloomfield, Connecticut, GeoQuest is a full service environmental management and consulting firm committed to excellence in serving its clients' needs. Our services include: Drill Site assessments Remedial investigations Site remediation Underground storage tank management Litigation and arbitration support Environmental management Our staff is experienced in developing and implementing solutions to a wide range of environmental problems including soil and groundwater contamination, hazardous material and waste management (including industrial chemicals and PCBs), petroleum discharges, RCRA facility closure, and regulatory compliance issues. Projects completed cover a variety of situations including (but not limited to) property transfers; corporate mergers and acquisitions; regulatory compliance; Brownfields development; litigation and arbitration; and industrial, commercial, retail, and residential developments. While we are a small firm, our clients range from Fortune 50 companies and major financial institutions to local developers, retailers, commercial and industrial property owners, municipalities, and local agencies throughout the United States and Canada. As a small firm, we pride ourselves on bringing personalized service to our clients. We are committed to working closely with them to understand and meet their individual needs and to arrive at practical and cost-effective solutions to their environmental problems. We make it possible for businesses to concentrate on doing business while we deal with the environmental issues they may encounter.


12. Tri State Materials Testing Lab

Tri State Materials Testing Lab provides material testing and inspection services to the public and private construction industry for over 20 years. They have a team of qualified experts with broad knowledge and technical expertise to manage your project.


13. Milone &a; MacBroom

  • Website: miloneandmacbroom.com
  • Headquarters: Cheshire, Connecticut, United States
  • Founded: 1984
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

Milone & MacBroom is a regional consulting and engineering firm that provides a range of services primarily for clients in the infrastructure, built environment, ecological, and environmental management sectors.


14. Tipping Point Resources Group, LLC

  • Website: tprgllc.com
  • Headquarters: New Haven, Connecticut, United States
  • Founded: 2016
  • Headcount: 1-10
  • LinkedIn

Tipping Point Resources Group, LLC is an innovative sediment management company that repurposes sediment as a valuable engineering resource. They offer multidisciplinary industry expertise and pair innovative treatment technologies to make the most of every project’s unrealized potential.


15. Conte Company

Conte Company specializes in the design, installation and testing of deep foundation systems for construction projects that require advanced geotechnical engineering. Building on unsuitable soils can complicate a project right from the start, but a proper foundation will support structures of all types and sizes. Identifying and implementing the most efficient foundation system for various types of soils, access and loading requirements, is what we do best. Conte Company uses the highest quality piles, installed by our qualified professionals, to build the longest lasting foundations in the industry. Extensive experience installing helical pile foundations means we can bid jobs accurately and aggressively. Combined with great prices on supplies from Earth Anchoring Suppliers, we are able to provide the most competitive bids on helical anchoring solutions in New England. Conte Company (in collaboration with Hubbell-Chance) is the developer of the innovative Drive-Cast Displacement Pile. This patent-pending technology allows for a faster, less disruptive installation as compared to other types of piles. These high-capacity piles continuously displace soil as they are being installed, while simultaneously filling the void with grout. The resulting centralized steel shaft, enclosed by a column of grout, have load capacities similar to more expensive alternatives. What’s more, they can be installed by smaller crews, in less time, in areas with limited access, all without pre-drilling. Conte Company provides all testing required for our own work, along with testing for other types of piles. All testing performed by Conte Company follows the strict ASTM Testing Standards and is monitored by a third party engineering firm. Our specially designed test frames have all the necessary stamped engineered design submittals and testing procedures. Conte Company also utilizes proprietary custom testing equipment for special applications.


16. Unicorn Management Consultant

  • Website: unicornmgt.com
  • Headquarters: Ridgefield, Connecticut, United States
  • Founded: 2000
  • Headcount: 1-10
  • LinkedIn

Unicorn Management Consultants is a private consulting firm that specializes in environmental investigations and remediation, technical oversight and compliance assistance.


17. Fuss & O'Neill

  • Website: fando.com
  • Headquarters: Manchester, Connecticut, United States
  • Founded: 1924
  • Headcount: 201-500
  • Latest funding type: Grant
  • LinkedIn

Fuss & O'Neill is a full-service civil, transportation, and environmental consulting company. They provide a range of services including engineering, planning, design, and environmental assessment. Their expertise helps shape communities and improve their infrastructure.


18. Ncs Consulting

NCS GeoResources, LLC provides innovative, high quality, cost-effective, and timely forensic, expert consultation, planning, quality assurance/quality control (QA/QC), training, and practical research and development services in the field of geotechnical engineering.


19. Atlantic Consulting and Engineering, LLC

The Quill Group is a full-service consulting firm that offers highly trained and professional civil engineers and land surveyors for planning, civil engineering, and land surveying expertise to both public and private sector clients. They are a one-stop shop for professional land surveying, civil engineering & materials testing laboratory in Connecticut (CT).


20. EnviroMed Services, Inc.

EnviroMed Services is a company that provides Industrial Hygiene Services, specializing in Personal Protective Equipment and Fall Protection. They offer a wide range of services including infrastructure services and careers in the field. With a focus on ensuring a safe workplace and compliance with OSHA regulations, they provide employee exposure monitoring for various analytes. They primarily serve the New England region and have worked with clients such as Covidien Surgical Devices.


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