Public engineering firm directory

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ADO Engineering, Inc.

South Elgin, IL

Specialized electrical engineering for aviation, transportation, and facilities projects

WebsitePhone1 officeFounded 2011Updated Jun 2026

Service detail: Electrical Systems Design

Service: Electrical Systems DesignService: Facility Electrical EngineeringService: Power Distribution DesignIndustry: AviationIndustry: TransportationType: Electrical Engineering+9 more

Chamlin & Associates

Peru, IL

Shaping communities with integrity, expertise, and purpose.

WebsitePhone3 offices2 projects4 leaders1 credentialsFounded 1952

Project: Spring Valley Wastewater Treatment Plant

Service: Land SurveysService: Boundary SurveysService: Construction LayoutIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+35 more

Christopher B. Burke Engineering, Ltd.

Rosemont, IL

Full-Service Consulting Engineers

WebsitePhone5 offices10 projects61 credentialsFounded 1986Size Estimate: 250-500 employees

Project: Presidential Park

Service: Civil DesignService: Roadway and Streetscape DesignService: Site DevelopmentIndustry: GovernmentIndustry: UtilitiesType: Civil Engineering+51 more

DB Sterlin Consultants, Inc.

Chicago, IL

One Vision. Shared Future.

WebsitePhone1 office6 projects1 credentialsUpdated Jun 2026

Project: Wells Street Bridge over the Chicago River

Service: Civil EngineeringService: Roadway Design & GeometricsService: Bicycle & Multi-Use Pathway DesignIndustry: GovernmentIndustry: BridgesType: Civil Engineering+32 more

Delta Engineering Group, LLC

Chicago, IL

Engineering a Better Tomorrow

WebsitePhone1 office4 projects8 credentialsFounded 1987Updated Jun 2026

Project: Metra Consolidated Control Facility

Service: Civil EngineeringService: Roads and StreetsService: FreewaysIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+50 more

Fehr Graham

Freeport, IL

To improve the communities where our clients live and work.

WebsitePhone12 offices8 projects5 credentialsFounded 1973Size Estimate: 100-500 employees

Project: 11th Street Reconstruction, Rockford

Service: Water and Wastewater EngineeringService: Water supply and treatmentService: Wastewater collection and treatmentIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+45 more

Gloger Engineers, Ltd.

Chicago, IL

Innovation plus engineering

WebsitePhone1 office5 projects1 leadersFounded 2005Size Estimate: 2-10 employees

Project: Vue53 High Risers Site Development

Service: Site DevelopmentService: Site Grading and DrainageService: Feasibility and Permitting SupportIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+17 more

Hampton, Lenzini and Renwick, Inc.

Elgin, IL

Engineering the Success of Our Communities

WebsitePhone4 offices5 projects9 leaders5 credentialsFounded 1965

Project: Tudor Court Street and Streetscape Improvements

Service: Preliminary EngineeringService: Feasibility AnalysisService: Agency CoordinationIndustry: InfrastructureIndustry: GovernmentType: Civil Engineering+52 more

Hancock Engineering

Westchester, IL

100+ Years of Excellence

WebsitePhone1 office8 leadersFounded 1911Updated Jun 2026

Service detail: Street and Highway Improvements

Service: Street and Highway ImprovementsService: Traffic and Intersection DesignService: Pavement Overlays and Surface TreatmentsIndustry: GovernmentIndustry: Highways & RoadsType: Civil Engineering+17 more

Hutchison Engineering, Inc.

Jacksonville, IL

Delivering Timely Infrastructure Solutions

WebsitePhone8 officesFounded 1945Updated Jun 2026

Service detail: Transportation Engineering

Service: Transportation EngineeringService: Highway, Road, and Street Planning and DesignService: Traffic Planning and ManagementIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+46 more

Juneau Associates, Inc., P.C.

Granite City, IL

Juneau - Where Experience Matters

Website3 offices3 projects5 leaders4 credentialsFounded 1980Updated Jun 2026

Project: Glencoe Road over Hamilton Creek Bridge Replacement

Service: Civil EngineeringService: Structural EngineeringService: RehabilitationIndustry: GovernmentIndustry: IndustrialType: Civil Engineering+37 more

Kaskaskia Engineering Group, LLC

Belleville, IL

Exceptional, innovative, and comprehensive engineering and contracting solutions

WebsitePhone1 office5 projects2 leadersUpdated Jun 2026

Project: Troy O'Fallon Road Bridge Replacement

Service: Civil EngineeringService: Comprehensive Civil DesignService: Planning Services Tailored To MunicipalIndustry: GovernmentIndustry: FederalType: Civil Engineering+67 more

Lochner

Chicago, IL

Trusted Infrastructure Services for Aviation, Transportation, and Water

WebsitePhone1 office8 projects6 leaders4 credentialsFounded 1944

Project: DFW On-Call Signage Implementation Support

Service: AviationService: Airport PlanningService: Airport Engineering and DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+41 more

Mackie Consultants, LLC

Rosemont, IL

Full-Service Consulting Engineering Firm

WebsitePhone1 office13 projects22 credentialsFounded 1975Size Estimate: 60-70 employees

Project: Willow Walk

Service: Land DevelopmentService: Grading and Earthwork AnalysisService: Sanitary Sewer PlanningIndustry: ResidentialIndustry: CommercialType: Civil Engineering+39 more

Orion Engineers, PLLC

Chicago, IL

Civil, structural, and construction engineering solutions for building, transportation, and utility infrastructure

WebsitePhone1 office11 projectsUpdated Jun 2026

Project: State Armory Renovation

Service: Buildings - Structural EngineeringService: New Construction DesignService: Renovations & RetrofitsIndustry: GovernmentIndustry: EducationType: Civil Engineering+87 more

Piggush Engineering

Kankakee, IL

Innovative civil engineering that communities can trust.

WebsitePhone1 office1 leadersFounded 2013Updated Jun 2026

Service detail: Land Surveying

Service: Land SurveyingService: Boundary SurveyService: Floodplain SurveyIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+59 more

QRSE, LLC

Honolulu, HI

Building the Future

WebsitePhone2 offices8 projects39 leadersFounded 2013Size Estimate: 10-49 employees

Project: Hurricane Lane Emergency Repair Work

Service: Construction and Project ManagementService: Construction Planning, Coordination, and OversightService: Project Scheduling, Cost Control, and EstimatingIndustry: Highways & RoadsIndustry: AviationType: Civil Engineering+30 more

R.K. Johnson & Associates, Inc.

Loves Park, IL

Civil Engineers, Land Surveyors, Since 1962

WebsitePhone1 office6 projects3 leaders6 credentialsFounded 1962

Project: Silo Crossing Single and Multi-Family Subdivision

Service: Civil Site DesignService: Project managementService: Residential developmentIndustry: Land DevelopmentIndustry: ResidentialType: Civil Engineering+55 more

Robinson Engineering, Ltd.

Frankfort, IL

Beyond Engineering

WebsitePhone1 office14 projectsFounded 1937Size Estimate: 100-499 employeesUpdated Jun 2026

Project: Downtown Streetscape

Service: Municipal EngineeringService: Infrastructure Master PlanningService: Financing & Grant AssistanceIndustry: GovernmentIndustry: TransportationType: Civil Engineering+50 more

SINGH + Associates

Chicago, IL

Experience. Reliability. Integrity.

WebsitePhone1 office2 projects7 leaders7 credentialsFounded 1992

Project: Illinois Tollway Central Tri-State Reconstruction

Service: Civil EngineeringService: Transportation EngineeringService: Electrical EngineeringIndustry: GovernmentIndustry: TransportationType: Civil Engineering+19 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

Thomas Engineering Group, LLC

Oak Park, IL

Delivering Small Firm Service and Expertise with Large Firm Experience and Innovation

WebsitePhone3 offices14 projects9 leaders6 credentialsFounded 2008

Project: Edens Spur Roadway and Bridge Reconstruction

Service: Transportation Planning and DesignService: State-led and locally-led Phase I studiesService: Feasibility studies and alternatives analysesIndustry: GovernmentIndustry: Highways & RoadsType: Civil Engineering+55 more

Thouvenot, Wade & Moerchen, Inc. (TWM)

Swansea, IL

Exceptional Service. Nothing Less.

WebsitePhone1 office2 projects13 credentialsSize Estimate: 200+ employeesUpdated Jun 2026

Project: Pierce Terrace Elementary School

Service: Transportation & Traffic EngineeringService: Roadway DesignService: Traffic & Safety StudiesIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+34 more

Willett, Hofmann & Associates, Inc.

Dixon, IL

Serving clients Ethically, Responsively and Professionally

WebsitePhone9 offices5 projects33 leaders16 credentialsFounded 1935

Project: Captain Swift Timber Covered Bridge

Service: Structural EngineeringService: Bridge DesignService: Bridge RatingsIndustry: Land DevelopmentIndustry: CommercialType: Architecture & Engineering+74 more