The engineering consulting industry in Illinois focuses on providing expert advice and technical solutions to challenges in various sectors. Companies range from small start-ups to large firms. Their specializations include civil, mechanical, and environmental engineering, along with a strong emphasis on sustainability. As demands for efficient infrastructure and environmental considerations grow, the industry is pivoting towards innovative practices. With advancements in technology, firms are increasingly integrating digital tools in project management and design. In recent years, emphasis on community involvement and social responsibility has also become prevalent, shaping the future direction of these companies.

This list showcases a variety of engineering consulting companies operating in Illinois, with sizes from small boutiques to large firms. The companies are primarily headquartered in locations like Chicago, Rock Island, and Schaumburg, and they were established between the mid-20th century and early 2000s. Specializations can be seen across construction management, environmental consulting, and infrastructure projects. Notable companies in this listing include IMEG and Benesch, indicating a robust presence in the engineering consulting sector.

Continue reading to discover the top engineering consulting companies in Illinois.

Top 19 Engineering Consulting Companies in Illinois

1. Imeg

• Website: imegcorp.com
• Ownership type: Private
• Headquarters: Rock Island, Illinois, United States (USA)
• Employee distribution: United States (USA) 84%, India 16%
• Founded year: 1955
• Headcount: 1001-5000
• LinkedIn: imeg-corp

IMEG, founded in 1955 and based in Rock Island, Illinois, is a prominent engineering consulting firm that specializes in high-performance building design and infrastructure solutions. With a workforce of nearly 3,000 professionals across various locations in the United States, IMEG offers a comprehensive suite of services that includes civil, structural, mechanical, and electrical engineering, as well as plumbing, fire protection, and technology design. The firm is particularly noted for its commitment to sustainability, providing services such as energy modeling, decarbonization planning, and building performance optimization. IMEG serves a wide array of markets, including healthcare, education, government, and commercial sectors, demonstrating its capability to handle projects of varying complexity. Their recent accolades, including multiple awards for regional best projects, highlight their active involvement and recognition within the industry.

2. Christopher B. Burke Engineering, Ltd.

• Website: cbbel.com
• Ownership type: Private
• Headquarters: Rosemont, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1986
• Headcount: 201-500
• LinkedIn: christopher-b--burke-engineering-ltd-

Christopher B. Burke Engineering, Ltd. (CBBEL) is a consulting engineering and surveying firm based in Rosemont, Illinois. Founded in 1986, the company has built a reputation for delivering accurate, timely, and cost-effective solutions to a wide array of engineering and environmental challenges. CBBEL specializes in civil design, construction management, environmental consulting, and surveying, serving primarily public sector clients such as municipalities and counties. Their team includes over 240 professionals, including licensed engineers, land surveyors, and specialists in various fields. CBBEL has successfully completed thousands of projects, focusing on infrastructure improvements, environmental resource management, and community development. Their commitment to sustainability and community involvement is evident in their project portfolio, which includes flood protection initiatives, habitat restoration, and urban landscape design. CBBEL's extensive experience and strong client relationships position them as a significant player in the engineering consulting industry.

3. Baxter & Woodman

• Website: baxterwoodman.com
• Ownership type: Private
• Headquarters: Crystal Lake, Illinois, United States (USA)
• Employee distribution: United States (USA) 99%, Other 1%
• Founded year: 1946
• Headcount: 201-500
• LinkedIn: baxter-%26-woodman

Baxter & Woodman is an engineering and consulting firm based in Crystal Lake, Illinois, with a history dating back to 1946. The company specializes in infrastructure planning, design, and construction, offering a wide array of services that include community and urban planning, water resources management, and wastewater treatment. Their clientele primarily consists of municipalities and private sector organizations, all seeking to improve community value through sustainable engineering practices. With a workforce of approximately 357 employees, Baxter & Woodman operates across multiple locations in the United States, including Florida, Texas, and Wisconsin. The firm is known for its commitment to quality service and innovative solutions, which are evident in their various projects aimed at enhancing public infrastructure and environmental stewardship. Their focus on community engagement and sustainable practices positions them as a relevant entity in the engineering consulting industry.

4. TERRA Engineering, Ltd.

• Website: terraengineering.com
• Ownership type: Corporate
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: June 2021
• Founded year: 1992
• Headcount: 51-200
• LinkedIn: terra-engineering

TERRA Engineering, Ltd. is a woman-owned engineering firm based in Chicago, Illinois, with additional offices in Peoria, St. Louis, and Milwaukee. Established in 1992, the company has grown to employ around 123 professionals who specialize in various engineering disciplines. TERRA offers a comprehensive suite of services, including construction engineering, electrical engineering, municipal engineering, and landscape architecture. The firm serves both municipalities and private developers, focusing on delivering innovative and sustainable solutions for infrastructure projects. TERRA is committed to ensuring compliance with regulatory requirements while exceeding client expectations. Their portfolio includes notable projects such as the Kenilworth Green Infrastructure Program and the Hyatt Regency Aruba Resort Spa & Casino. TERRA's dedication to community involvement and mentorship within the engineering field further enhances its standing in the industry.

5. V3 Companies

• Website: v3co.com
• Ownership type: Private
• Headquarters: Woodridge, Illinois, United States (USA)
• Employee distribution: United States (USA) 89%, Canada 9%, Other 2%
• Founded year: 1983
• Headcount: 201-500
• LinkedIn: v3-companies

V3 Companies, based in Woodridge, Illinois, is an engineering and consulting firm that has been operational since 1983. The company specializes in construction management, environmental services, and municipal consulting, catering to a wide range of clients, including developers and government agencies. V3 is dedicated to providing innovative solutions for land development and infrastructure projects, with a focus on enhancing community outcomes. Their service offerings include construction engineering, ecological restoration, landscape architecture, and municipal consulting, among others. V3 has successfully completed numerous projects that reflect their expertise and commitment to quality. The firm has also been recognized for its workplace culture, being named one of the best firms to work for and a top healthiest employer in Illinois and Indiana. This recognition highlights their focus on employee satisfaction and professional development, which contributes to their overall effectiveness in the engineering consulting industry.

6. Manhard Consulting

• Website: manhard.com
• Ownership type: Private
• Headquarters: Lincolnshire, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1972
• Headcount: 201-500
• LinkedIn: manhard-consulting

Manhard Consulting, Ltd. is a civil engineering consulting firm based in Lincolnshire, Illinois, with a workforce of approximately 390 employees. Founded in 1972, the company has built a reputation for providing a variety of professional services, including civil engineering, surveying, and municipal services. They cater to both public and private sector clients, assisting with infrastructure projects and ensuring compliance with regulations. Their expertise allows clients to navigate complex challenges in project planning and execution. Manhard Consulting has been recognized as an ENR Top 500 Design Firm and has received accolades such as the NAIOP Chicago Engineering Firm of the Year. The firm operates across multiple markets, including residential and land development, renewable energy, healthcare, and transportation, showcasing their adaptability and commitment to addressing the needs of various sectors. They have a strong focus on sustainability and corporate social responsibility, which aligns with current industry trends.

7. Primera Engineers

• Website: primeraeng.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 99%
• Founded year: 1987
• Headcount: 201-500
• LinkedIn: primera-engineers

Primera Engineers, founded in 1987 and based in Chicago, Illinois, is a private engineering firm that offers comprehensive design and consulting services. The company operates primarily in three key areas: buildings, transportation, and utilities. With a team of over 300 professionals, Primera is dedicated to delivering innovative solutions to complex infrastructure challenges. Their expertise spans multiple engineering disciplines, including mechanical, electrical, plumbing, structural, and civil engineering. They have worked on a variety of projects, from healthcare facilities to transportation systems, showcasing their ability to adapt to different client needs. As a certified women-owned business enterprise (WBE), Primera emphasizes quality service and has established a robust Quality Management System that is ISO 9001:2015 certified. Their commitment to community involvement and employee safety further highlights their role as a responsible player in the engineering consulting industry.

8. Valdes Architecture & Engineering

• Website: valdeseng.com
• Ownership type: Private
• Headquarters: Lombard, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1992
• Headcount: 201-500
• LinkedIn: valdes-engineering-company

Valdes Architecture & Engineering, founded in 1992 and based in Lombard, Illinois, is a private firm that offers a wide array of engineering and architectural services. With a workforce of approximately 176 employees, the company has established itself as a reliable partner for clients in sectors such as oil & gas, utilities, chemicals, life sciences, and transportation. Valdes is known for its commitment to safety, quality, and client satisfaction, which are core principles that guide their operations. The firm holds various professional licenses, including architecture and engineering, allowing them to provide comprehensive solutions tailored to the specific needs of their clients. Their project portfolio includes significant undertakings like outage planning services and facility design, reflecting their capability to manage complex projects effectively. Valdes Architecture & Engineering continues to thrive in the competitive engineering consulting market, demonstrating a strong track record of delivering technical excellence and innovative solutions.

9. RTM Engineering Consultants

• Website: rtmec.com
• Ownership type: Private
• Headquarters: Schaumburg, Illinois, United States (USA)
• Employee distribution: United States (USA) 95%, Philippines 4%, Other 1%
• Founded year: 1981
• Headcount: 201-500
• LinkedIn: rtm-%26-associates

RTM Engineering Consultants, based in Schaumburg, Illinois, is a private engineering consulting firm that specializes in mechanical, electrical, and plumbing (MEP), civil, and structural engineering services. Established in 1981, RTM has built a robust portfolio, serving clients primarily in the healthcare and education sectors. The firm operates through a network of offices across the United States, allowing them to maintain strong local relationships while utilizing national resources. RTM is committed to professional development, offering various career advancement opportunities for its employees. The company also emphasizes community engagement, actively participating in initiatives that promote STEM education and providing pro bono services to nonprofits. Their strategic growth through acquisitions has expanded their capabilities and market reach, positioning them as a relevant player in the engineering consulting industry.

10. Hanson Professional Services Inc.

• Website: hanson-inc.com
• Ownership type: Corporate
• Headquarters: Springfield, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: May 2022
• Founded year: 1954
• Headcount: 501-1000
• LinkedIn: hanson-professional-services-inc.

Hanson Professional Services Inc. is a consulting firm based in Springfield, Illinois, specializing in engineering, planning, and project management services. Established in 1954, the company has built a robust portfolio serving clients across various sectors, including aviation, healthcare, and local government. With a workforce of approximately 564 employees, Hanson emphasizes a collaborative approach to project delivery, ensuring that they meet complex project needs effectively. Their services range from environmental assessments to construction management, showcasing their versatility in handling projects of varying scales. The firm is also committed to sustainability, being a corporate member of the U.S. Green Building Council and a charter member of the Institute for Sustainable Infrastructure. This commitment reflects their dedication to integrating green practices into their engineering solutions. Hanson has achieved ISO/IEC 17020 accreditation, further solidifying their standing in the industry. As an employee-owned company since 1972, Hanson fosters a culture of ownership and responsibility among its staff, which can lead to higher levels of engagement and quality in their work.

11. OMEGA & Associates, Inc.

• Website: omegaassociates.com
• Ownership type: Private
• Headquarters: Lisle, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 2002
• Headcount: 51-200
• LinkedIn: omegaassociatesinc

OMEGA & Associates, Inc., also known as TranSystems, is an engineering consulting firm based in Lisle, Illinois. Founded in 2002, the company has built a reputation for its expertise in infrastructure development. TranSystems offers a wide array of services, including architecture, bridge design, environmental consulting, and project management. They cater to various sectors, particularly government and transportation, providing solutions that address complex engineering challenges and regulatory compliance. With a workforce of approximately 67 employees, TranSystems is actively involved in significant projects across the United States, demonstrating their capability and commitment to enhancing infrastructure. Their focus on community engagement and professional development further underscores their role in the engineering consulting industry.

12. WBK Engineering

• Website: wbkengineering.com
• Ownership type: Private
• Headquarters: St. Charles, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1998
• Headcount: 11-50
• LinkedIn: wbkengineering

WBK Engineering, based in St. Charles, Illinois, is a private engineering firm that has been providing specialized services since its founding in 1998. The company focuses on civil, environmental, and transportation engineering, offering a wide range of services that include architecture, project management, and environmental consulting. WBK Engineering serves a variety of clients, including federal agencies, municipalities, and Indigenous communities, emphasizing sustainable solutions for infrastructure and community development. The firm is tribally owned and operates under the Bodwé Professional Services Group, which is part of the Pokagon Band of Potawatomi. This affiliation not only highlights their commitment to Indigenous values but also positions them as a certified 8(a) Small Disadvantaged Business, enhancing their credibility in the federal contracting space. With a team of experienced professionals, WBK Engineering has successfully completed numerous projects, focusing on the integration of natural ecosystems into their engineering solutions.

13. Walker Consultants

• Website: walkerconsultants.com
• Ownership type: Private
• Headquarters: Hoffman Estates, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1965
• Headcount: 201-500
• LinkedIn: walker-consultants

Walker Consultants, based in Hoffman Estates, Illinois, is a private consulting firm that has been active since 1965. The company specializes in planning, engineering, architecture, and restoration services, catering to a wide range of sectors including aviation, education, and healthcare. With a workforce of approximately 453 employees, Walker Consultants prides itself on being 100% employee-owned, which fosters a culture of accountability and dedication to client service. Their expertise spans various services such as parking design, transportation planning, and structural engineering, where they apply innovative solutions to enhance project outcomes. The firm has consulted on numerous projects across the United States and internationally, demonstrating their capability to handle complex challenges in the built environment. Walker Consultants has also received recognition for their work, including awards from industry organizations, further solidifying their standing in the engineering consulting field.

14. Dynasty Group

• Website: dynastygrp.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1994
• Headcount: 51-200
• LinkedIn: dynasty-group

Dynasty Group Inc. is a consulting engineering and surveying firm based in Chicago, Illinois, established in 1994. The company specializes in a variety of services such as design engineering, construction engineering, surveying, nondestructive testing, and BIM/GIS support. They cater to both public and private sector clients, ensuring quality and compliance in infrastructure and site development projects. With a team of skilled professionals, Dynasty Group has been involved in numerous projects across the Chicagoland area, including highways, airports, and historic preservation efforts. Their commitment to utilizing advanced engineering and computer technology allows them to deliver timely and responsive services. Additionally, they are recognized as a certified Minority Business Enterprise (MBE), which enhances their standing in the industry. Dynasty Group has received accolades for their work, including the Illinois Department of Transportation's DBE Consultant's Exceptional Service Award, showcasing their dedication to excellence in engineering consulting.

15. GHR Engineers and Associates, Inc.

• Website: ghrinc.com
• Ownership type: Private
• Headquarters: Champaign, Illinois, United States (USA)
• Employee distribution: United States (USA) 82%, United Kingdom (UK) 18%
• Founded year: 1949
• Headcount: 11-50
• LinkedIn: ghr-engineers-and-associates-inc.

GHR Engineers and Associates, Inc. is a Champaign, Illinois-based engineering firm that specializes in the design of mechanical and electrical systems for buildings. Established in 1949, GHR has built a reputation for delivering high-quality engineering solutions across multiple sectors, including healthcare, education, and commercial construction. The firm offers a comprehensive range of services, including project management, construction administration, and sustainability consulting. GHR's expertise is particularly evident in their work with complex building systems, where they assist clients in navigating engineering challenges effectively. Their commitment to quality is reflected in their project management procedures, which emphasize cost control and schedule management. GHR has also embraced modern technologies, such as Building Information Modeling (BIM), to enhance their design processes and improve project outcomes. With a dedicated team of professional engineers and technicians, GHR continues to play a significant role in the engineering consulting industry.

16. Lochner

• Website: hwlochner.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1944
• Headcount: 1001-5000
• LinkedIn: lochner

Lochner is an infrastructure services company based in Chicago, Illinois, founded in 1944. With a workforce of approximately 825 employees, Lochner specializes in engineering and design, construction management, and environmental consulting. The company serves both government agencies and private sector clients, focusing on improving transportation and water systems throughout the United States. Their service offerings include construction engineering and inspection, program and construction management, and environmental services. Lochner has a strong commitment to quality and innovation, as evidenced by their extensive portfolio of projects across various sectors, including aviation, highways, bridges, transit, and water management. Their recent recognition as #103 in the 2024 ENR Top 500 Design Firms highlights their relevance and operational scale in the engineering consulting industry.

17. Benesch

• Website: benesch.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1946
• Headcount: 501-1000
• LinkedIn: alfred-benesch-%26-company

Benesch is an engineering and consulting firm based in Chicago, Illinois, with a history dating back to 1946. The company specializes in infrastructure improvement and community development, providing a wide array of services that include engineering, environmental consulting, and project management. They cater to both public and private sector clients, helping them navigate complex regulatory challenges while implementing sustainable solutions for infrastructure projects. Benesch's expertise spans multiple practice areas, including transportation, community planning, and environmental management. Their multidisciplinary team collaborates to tackle complex challenges, ensuring that projects are completed on time and within budget. The firm has been recognized for its innovative approaches and has played a significant role in various infrastructure projects across the nation, demonstrating their commitment to enhancing community well-being and environmental stewardship.

18. Lin Engineering, Ltd.

• Website: lineng.com
• Ownership type: Private
• Headquarters: Springfield, Illinois, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1991
• Headcount: 11-50
• LinkedIn: lin-engineering-ltd-

Lin Engineering, Ltd. is an engineering consulting firm based in Springfield, Illinois, specializing in structural, transportation, and hydraulic engineering services. Founded in 1991, the company has developed a strong reputation for its expertise in project planning, design, and inspection, primarily serving government agencies and design firms. With a team that includes civil engineers, structural engineers, hydraulic engineers, and land surveyors, Lin Engineering has successfully completed numerous projects across Illinois and surrounding states. They are prequalified in all nine districts of Illinois and Iowa, which allows them to participate in a wide range of infrastructure projects. The firm has received several awards from the ACEC-IL, recognizing their engineering achievements and contributions to public welfare. Their management philosophy emphasizes client service, quality assurance, and meeting production schedules, which has helped them maintain a solid position in the engineering consulting field.

19. Globetrotters Engineering Corporation

• Website: gec-group.com
• Ownership type: Family Owned
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 96%, Canada 2%, Portugal 2%
• Founded year: 1974
• Headcount: 201-500
• LinkedIn: globetrotters-engineering-corporation

Globetrotters Engineering Corporation, based in Chicago, Illinois, is an architectural engineering firm that has been operational since 1974. With a workforce of over 200 professionals, the company specializes in a broad spectrum of services, including architecture, engineering, construction management, and facility management. They cater to both public and private sector clients, focusing on sustainable infrastructure projects that enhance community development. Globetrotters has been involved in significant projects such as the expansion of O'Hare International Airport and various municipal services, showcasing their capability in managing complex and large-scale initiatives. The firm is recognized for its commitment to quality and sustainability, having received several awards from industry organizations. Their approach combines technical expertise with a strong emphasis on client relationships, ensuring tailored solutions that meet specific project needs.

Engineering Consulting Insights: Key Companies in Illinois

Company	Headquarter	Size	Founded	Ownership
Imeg	Rock Island, Illinois, United States (USA)	1001-5000	1955	Private
Christopher B. Burke Engineering, Ltd.	Rosemont, Illinois, United States (USA)	201-500	1986	Private
Baxter & Woodman	Crystal Lake, Illinois, United States (USA)	201-500	1946	Private
TERRA Engineering, Ltd.	Chicago, Illinois, United States (USA)	51-200	1992	Corporate
V3 Companies	Woodridge, Illinois, United States (USA)	201-500	1983	Private
Manhard Consulting	Lincolnshire, Illinois, United States (USA)	201-500	1972	Private
Primera Engineers	Chicago, Illinois, United States (USA)	201-500	1987	Private
Valdes Architecture & Engineering	Lombard, Illinois, United States (USA)	201-500	1992	Private
RTM Engineering Consultants	Schaumburg, Illinois, United States (USA)	201-500	1981	Private
Hanson Professional Services Inc.	Springfield, Illinois, United States (USA)	501-1000	1954	Corporate
OMEGA & Associates, Inc.	Lisle, Illinois, United States (USA)	51-200	2002	Private
WBK Engineering	St. Charles, Illinois, United States (USA)	11-50	1998	Private
Walker Consultants	Hoffman Estates, Illinois, United States (USA)	201-500	1965	Private
Dynasty Group	Chicago, Illinois, United States (USA)	51-200	1994	Private
GHR Engineers and Associates, Inc.	Champaign, Illinois, United States (USA)	11-50	1949	Private
Lochner	Chicago, Illinois, United States (USA)	1001-5000	1944	Private
Benesch	Chicago, Illinois, United States (USA)	501-1000	1946	Private
Lin Engineering, Ltd.	Springfield, Illinois, United States (USA)	11-50	1991	Private
Globetrotters Engineering Corporation	Chicago, Illinois, United States (USA)	201-500	1974	Family Owned

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