Geotechnical engineering companies play a crucial role in the construction industry, providing solutions for building tasks that are intertwined with the earth's subsurface elements. Specializing in environmental preservation, soil behavior, and structural foundations, these companies offer geotechnical, as well as environmental, and construction management services. Specifically in Illinois, these companies hold a fundamental role in the economic growth and infrastructure development of the region. With continual innovation and advanced technology, this industry is helping in the creation of sturdy, sustainable structures, while ensuring minimal environmental impact.


Top 19 geotechnical engineering companies in Illinois

1. Wiss, Janney, Elstner Associates, Inc.

  • Website: wje.com
  • Headquarters: Northbrook, Illinois, United States
  • Founded: 1956
  • Headcount: 501-1000
  • LinkedIn

WJE.com is a company that provides engineering and construction services in various fields such as bridge, fire protection, geotechnical, materials engineering, and more. They offer solutions for both new and existing structures, including testing, evaluation, and troubleshooting. Their team of experts utilizes advanced laboratories and technical centers to solve complex problems related to construction materials and components.


2. Entact, LLC

  • Website: entact.com
  • Headquarters: Westmont, Illinois, United States
  • Founded: 1991
  • Headcount: 501-1000
  • Latest funding type: Acquired
  • LinkedIn

ENTACT is a premier provider of environmental remediation and geotechnical construction services in the U.S., helping clients solve complex challenges. They offer services such as environmental dredging, slurry wall construction, and soil mixing & treatment. With a focus on safety, teamwork, and high-quality work, ENTACT has a repeat client business and is trusted to make it right.


3. GSG Consultants, Inc.

GSG Consultants, Inc. is a well-established engineering firm offering a wide range of services including geotechnical, environmental, construction management, natural resources, design services, and program management.


4. Testing Service Corporation

  • Website: tsccorp.com
  • Headquarters: Carol Stream, Illinois, United States
  • Founded: 1954
  • Headcount: 51-200
  • LinkedIn

TSC Corp is an environmental services company based in Carol Stream, Illinois. They offer a range of services including environmental consulting/assessment, construction materials testing, geotechnical engineering, and drilling services. With a dedicated staff of experienced engineers, geologists, technicians, and drilling personnel, TSC Corp provides high-quality services in a responsive manner. They serve various industries such as commercial/industrial buildings, warehouses, business parks, and hospitals.


5. INTERRA, Inc.

INTERRA, Inc. is an industry-leading provider of Engineering, Inspection, and Testing services in support of construction, development, environmental, and geotechnical projects. With a focus on complete client satisfaction, INTERRA delivers cost-effective solutions, reliable material testing data, and value-added construction management services. The company serves a wide range of clients, including state highway departments, federal agencies, municipalities, healthcare corporations, and construction firms.


6. Midland Standard Engineering & Testing, Inc.

  • Website: msetinc.com
  • Headquarters: South Elgin, Illinois, United States
  • Founded: 2005
  • Headcount: 11-50
  • LinkedIn

Midland Standard Engineering & Testing, Inc. is a Geotechnical Engineering firm specializing in Construction Materials Testing. They offer a complete range of drilling services for geotechnical exploration and provide Geoprobe® sampling. Based in the greater Chicago Area, they serve clients in Illinois, Wisconsin, and Indiana.


7. NASHnal SOIL TESTING, LLC

  • Website: nstengr.com
  • Headquarters: Plainfield, Illinois, United States
  • Founded: 2010
  • Headcount: 11-50
  • LinkedIn

NST is a full-service organization that provides testing and inspection services for geotechnical engineering and construction materials. They have a certified material testing lab and offer cost-effective geotechnical investigation, engineering, and construction inspection services. With licensed professional engineers and technicians, NST is committed to delivering quality services on time and within budget.


8. Quality Testing and Engineering INC

  • Website: qteinc.com
  • Headquarters: O Fallon, Illinois, United States
  • Founded: 2000
  • Headcount: 11-50
  • LinkedIn

Quality Testing and Engineering (QTE) is a construction testing and engineering company based in St Louis metro and Southern Illinois. Founded in 2000, QTE offers construction material testing, geotechnical engineering, wetland services, and other development services.


9. Raimonde Drilling Corporation

Raimonde Drilling Corporation provides drilling services including rock core, auger, angle, environmental, geotechnical and offshore/barge drilling for mineral exploration, environmental investigations and geotechnical engineering. They celebrate 50 years of quality and efficient drilling services.


10. Wang Engineering, Inc.

  • Website: wangeng.com
  • Headquarters: Lombard, Illinois, United States
  • Founded: 1982
  • Headcount: 11-50
  • Latest funding type: Acquired
  • LinkedIn

Wang Engineering, Inc. provides geotechnical engineering, construction inspection, and materials testing services to state and federal governments, private, and public sector clients in the United States and overseas.


11. Roberts Environmental Drilling, Inc.

R.E.D.I. is an Illinois-based drilling company specializing in environmental, geotechnical and mineral drilling services. Their equipment allows them to perform air knife, soil borings, soil & water sampling, rock drilling & coring in support of Geotechnical and Environmental Projects.


12. GEOCON Professional Services

Geocon provides construction testing and inspection services in Illinois and Indiana. They are IDOT and INDOT certified for inspection and testing of hot-mix-asphalt, concrete, aggregates, and soils.


13. Goodheart & Associates LLC

Goodheart & Associates LLC provides high-quality, cost-effective civil and geotechnical engineering, environmental consulting and engineering, solid and hazardous waste management services, storm water management, permitting, and construction management services for commercial, heavy industrial, utility, transportation, institutional and governmental facilities.


14. Weaver Consultants Group

  • Website: wcgrp.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1991
  • Headcount: 201-500
  • LinkedIn

Weaver Consultants Group is a privately held consulting firm offering multi-disciplinary engineering services. They provide personalized, pragmatic yet innovative project management and development solutions to help clients stay within scope while delivering on expectations.


15. CNC Foundations

CNC Foundations is a construction company that specializes in ground improvement for construction projects. They offer design and installation services, utilizing a full-time engineering staff and support personnel to meet the most challenging demands of projects.


16. Millennia Professional Services

  • Website: millennia.pro
  • Headquarters: Morton, Illinois, United States
  • Founded: 2004
  • Headcount: 51-200
  • LinkedIn

Millennia Professional Services is a consulting firm specializing in engineering services for the municipal, construction, energy, geotechnical, materials testing, surveying, transportation, and water resources sectors.


17. Design Consulting Engineers

  • Website: dceint.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1990
  • Headcount: 1-10
  • LinkedIn

Design Consulting Engineers is a multidisciplinary engineering firm that offers full-service capabilities to the global business community and public in the engineering and consulting fields. They strive for technical excellence, client satisfaction, cost-effective design, project management, and timely project completion.


18. SKS Engineers, LLC

SKS Engineers LLC is a licensed professional engineering company that offers a wide range of services in civil engineering, geotechnical engineering, structural engineering, mechanical, electrical & plumbing engineering, environmental engineering, land surveying, laboratory testing, and construction quality control inspections. With over 50 years of experience, they have a versatile and highly skilled technical staff that has served Central Illinois and the surrounding areas.


19. Hutchison Engineering, Inc

Hutchison Engineering is a company that provides engineering services and specializes in bridge construction and reconstruction projects. They offer expertise in bridge design, construction management, and project planning. With a focus on excellence and innovation, they deliver high-quality and cost-effective solutions for their clients.


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