Public engineering firm directory

Find engineering consulting firms by capability and location.

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Accurate Group, Inc.

Lincolnshire, IL

A solution-oriented international organization experienced in engineering and IT services.

Website1 office7 projectsFounded 1994Size Estimate: 25-100 employeesUpdated Jun 2026

Project: Grand Ave. Ramp Reconstruction

Service: Civil EngineeringService: Land Development and Real Estate SupportService: Infrastructure Planning and OversightIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+36 more

Hurst-Rosche, Inc.

Hillsboro, IL

Founded in 1937 and headquartered in Hillsboro, Illinois, Hurst-Rosche is a total in-house, multi-discipline architecture and engineering practice with six offices across Illinois, Missouri, and Tennessee. Bringing together architecture, civil, structural, mechanical, electrical, geotechnical, environmental, and surveying capabilities under one roof, it delivers planning, design, and construction-related services on projects ranging from school performing arts centers and water treatment plants to transportation infrastructure and institutional facilities. Projects have earned Illinois Capital Development Board Thomas Madigan Awards, AIA Design Awards, and ACEC Excellence Awards.

WebsitePhone6 offices6 projects3 leaders4 credentialsFounded 1937

Project: Murphysboro High School Performing Arts Center

Service: ArchitectureService: Educational Facility DesignService: Government & Institutional Facility DesignIndustry: EducationIndustry: GovernmentType: Architecture & Engineering+37 more

Klingner & Associates, P.C.

Quincy, IL

Solving Complex Problems Through Integrated Design and Engineering

WebsitePhone9 offices1 projects1 leadersFounded 1905Updated Jun 2026

Project: Iles Elementary School

Service: ArchitectureService: Architectural DesignService: Furniture, Fixtures, and EquipmentIndustry: AgricultureIndustry: CommercialType: Architecture & Engineering+43 more

McGuire Engineers, Inc.

Chicago, IL

Excellence by Design, Sustainability by Commitment

WebsitePhone1 office15 projects3 leaders17 credentialsFounded 1986

Project: The Momentary

Service: MEP Engineering DesignService: Mechanical EngineeringService: Electrical EngineeringIndustry: CommercialIndustry: Arts & CultureType: MEP+45 more

Partner Engineering and Science, Inc.

Pasadena, CA

Engineers Who Understand Your Business

WebsitePhone17 offices7 projects11 leadersSize Estimate: 1,500+ employeesUpdated Jun 2026

Project: Adaptive Reuse of North Riverfront Historic Industrial Portfolio

Service: Building Assessments & EngineeringService: Property Condition Assessment ReportsService: Commercial Building InspectionIndustry: CommercialIndustry: Multifamily ResidentialType: Environmental Engineering+53 more

Pioneer Engineering & Environmental Services, LLC

Chicago, IL

Results you can build on.

Website1 office9 projects1 credentialsFounded 1989Size Estimate: 10-75 employeesUpdated Jun 2026

Project: Phase I ESA & Compliance Audit at an Active Metal Forging Plant

Service: Site AssessmentService: Phase I Environmental Site AssessmentsService: Phase II Environmental Site AssessmentsIndustry: Financial ServicesIndustry: Land DevelopmentType: Environmental Engineering+31 more

Rl Millies Associates Inc

Munster, IN

Inspired Design

Website3 offices6 leaders1 credentialsFounded 1975Updated Jun 2026

Service detail: Mechanical, Electrical, Plumbing and Fire Protection

Service: Mechanical, Electrical, Plumbing and Fire ProtectionService: Lighting Design and Photometric CalculationsService: Power Distribution DesignIndustry: AutomotiveIndustry: CommercialType: Fire Protection Engineering+24 more

Roux

Islandia, NY

We Solve Our Clients' Most Challenging Environmental Issues

WebsitePhone15 offices3 leaders1 credentialsFounded 1981Size Estimate: 450+ employees

Service detail: Engineering & Remediation Services

Service: Environmental, Health & Safety Compliance ServicesService: Brownfields / Due DiligenceService: Engineering & Remediation ServicesIndustry: Environmental & RemediationIndustry: Oil & GasType: Environmental Engineering+20 more

Russell W Martin Engineering P C

Springfield, IL

Consulting engineering and land surveying services for Central Illinois

WebsitePhone1 office8 projects2 leadersFounded 1982Updated Jun 2026

Project: Domino's Pizza Jacksonville

Service: Civil EngineeringService: Public Sector EngineeringService: Civil Site DesignIndustry: CommercialIndustry: RetailType: Civil Engineering+22 more

The Fire Protection International Consortium, Inc.

Woodridge, IL

Professional fire protection, life safety, and security engineering consulting

WebsitePhone4 offices2 leadersFounded 2001Updated Jun 2026

Service detail: Fire Protection Engineering

Service: Fire Protection EngineeringService: Smoke Control IntegrationService: Fire Sprinkler IntegrationIndustry: AirportsIndustry: CommercialType: Fire Protection Engineering+37 more

The Upchurch Group Inc

Mattoon, IL

Providing Successful Architecture Solutions Through Creative Design & Applied Wisdom

WebsitePhone1 officeFounded 1968Updated Jun 2026

Service detail: Architecture

Service: ArchitectureService: Architectural DesignService: Construction DocumentsIndustry: CommercialIndustry: EducationType: Architecture & Engineering+101 more

WT Group AEC, LLC

Hoffman Estates, IL

Engineering with precision, pace and passion

WebsitePhone1 office6 leaders5 credentialsFounded 1971Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Structural EngineeringService: MEP EngineeringIndustry: CommercialIndustry: RetailType: Civil Engineering+18 more