Public engineering firm directory

Find engineering consulting firms by capability and location.

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2IM Group, LLC

Chicago, IL

2IM Group, LLC is a Chicago-based civil, environmental, and transportation engineering practice. Now part of MacKay, it continues to deliver technical solutions across highways, roads, streets, aviation, rail, transit, utilities, and stormwater management systems while offering expanded resources and broader geographic reach.

WebsitePhone1 office5 projects8 leadersFounded 2005Updated Jun 2026

Project: O'Hare Terminal 3, Concourse L Expansion

Service: Highways, Roads, and StreetsService: Roadway geometryService: Drainage systemsIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+29 more

5 Smooth Stones Restoration

Specialists in applied fluvial geomorphology and stream restoration

Website7 projects3 leadersFounded 2015Updated Jun 2026

Project: Riverby Ranch Mitigation Site

Service: Geomorphic Assessment and Stream Restoration DesignService: Watershed Assessment and Gage AnalysisService: Geomorphic Survey of Fluvial SystemsIndustry: Environmental & RemediationIndustry: Water ResourcesType: Environmental Engineering+15 more

AAI Environmental Corporation

Ashland City, TN

Professional environmental site assessments and due diligence services nationwide

WebsitePhone1 office6 projects1 credentialsFounded 1995Updated Jun 2026

Project: Windmill Farm Initial Planning Study

Service: Phase I Environmental Site Assessment (ESA)Service: Phase II Environmental Site AssessmentService: Phase III Environmental AssessmentIndustry: CommercialIndustry: ResidentialType: Environmental Engineering+34 more

ANS

Scotch Plains, NJ

Engineering with integrity & purpose.

WebsitePhone1 office7 projects12 leadersSize Estimate: 100-300 employeesUpdated Jun 2026

Project: The Virginia Vanguard

Service: Civil, Site & Land DevelopmentService: Site Development & PermittingService: Regulatory Coordination & RepresentationIndustry: Renewable EnergyIndustry: SolarType: Civil Engineering+57 more

Adams, Rehmann & Heggan Associates, Inc.

Hammonton, NJ

You See Us Every Day

Website1 office1 projects10 leaders2 credentialsFounded 1935Size Estimate: 90 employees

Project: Braddocks Mill Dam

Service: Civil and Municipal EngineeringService: Road and Infrastructure DesignService: Stormwater ManagementIndustry: GovernmentIndustry: TransportationType: Civil Engineering+38 more

Adobe Associates, Inc.

Santa Rosa, CA

Recognized as one of the top Civil Engineering and Land Surveying firms in the North Bay, Adobe Associates, Inc. provides Civil Engineering, Land Surveying, Land Planning, and Wastewater and Septic Design services for the development of private and public projects. Since 1982, Adobe Associates has helped thousands of clients maximize the value of their projects by finding potential opportunities others often miss, creating practical, accurate design solutions, and guiding projects through the regulatory process. Adobe Associates is a family business built on honesty, integrity, and dependability, with project experience spanning residential development, commercial, affordable housing, hospitality, agricultural, and public infrastructure work across Northern California.

WebsitePhone1 office7 projects4 credentialsFounded 1982Updated Jun 2026

Project: Drake's Cove Subdivision

Service: Civil EngineeringService: Feasibility StudiesService: Site Grading and Drainage DesignIndustry: ResidentialIndustry: Multifamily ResidentialType: Civil Engineering+37 more

Advanced Resources International, Inc.

Arlington, VA

Pioneering the Past. Innovating the Future.

WebsitePhone3 offices13 projects11 leadersFounded 1990Size Estimate: 60+ employees

Project: World Shale Gas and Shale Oil Resource Assessment

Service: Unconventional Oil & GasService: Shale Gas and Tight Oil Resource AssessmentService: Coalbed Methane Feasibility StudiesIndustry: Oil & GasIndustry: Carbon CaptureType: Petroleum Engineering+20 more

AeroShield Consulting

Tucson, AZ

Expert Counter-UAS Consulting Services

WebsitePhone1 office1 leaders1 credentialsUpdated Jun 2026

Service detail: Threat Assessment & Risk Analysis

Service: Threat Assessment & Risk AnalysisService: Technology Evaluation & ProcurementService: System Selection & IntegrationIndustry: GovernmentIndustry: DefenseType: Defense Engineering+18 more

Antero Group

Chicago, IL

Authentic partnerships are the best way to design and deliver projects that create lasting value.

WebsitePhone4 offices5 projects6 leadersUpdated Jun 2026

Project: Barry County Broadband Assessment and Implementation Plan

Service: Civil EngineeringService: Site DevelopmentService: Construction Engineering and ManagementIndustry: TransportationIndustry: GovernmentType: Civil Engineering+47 more

Aquatech Engineering P.C.

New York, NY

Leveraging technology to solve today's water-related challenges

Website1 office8 projects2 leadersFounded 2012Updated Jun 2026

Project: Hydrologic/Hydraulic Modeling for New York City DEP's LTCP4

Service: Hydraulic, Hydrodynamic & Hydrologic ModelingService: Water Distribution System Hydraulic & Water Quality ModelingService: Stormwater Management & Flood MitigationIndustry: Stormwater & Flood ControlIndustry: WastewaterType: Water / Wastewater Engineering+16 more

BAKR Technologies, LLC.

Engineering Excellence, Unrivaled Innovation

Website12 projectsFounded 2017Updated Jun 2026

Project: Hubble Space Telescope Servicing Mission 4

Service: Program & Project ManagementService: Performance Assurance Contract AdministrationService: Engineering Document PreparationIndustry: AerospaceIndustry: DefenseType: Aerospace Engineering+18 more

Baer Engineering and Environmental Consulting, Inc.

Austin, TX

Sustainability through responsible engineering of the built environment.

WebsitePhone1 office9 projects2 credentialsFounded 1992Size Estimate: 1-25 employees

Project: Austin Bergstrom International Airport ConRAC Facility

Service: Engineering and Water ResourcesService: BMP ServicesService: National Flood Insurance Program RegulationsIndustry: EducationIndustry: HealthcareType: Chemical Engineering+83 more

Ballantine Aviation Consulting Services PLLC

Portland, ME

Serving Our Nation's Airports Since 1987

WebsitePhone1 office5 projects1 leaders10 credentialsFounded 2011

Project: Relocate Runway 16-34 BAK-12 Barrier Sheds

Service: Airport Design and InfrastructureService: Airfield Pavement EngineeringService: Pavement Management and Condition InspectionIndustry: AirportsIndustry: AviationType: Aviation Engineering+29 more

Big Sky Acoustics

Helena, MT

Acoustical Design and Noise Control

WebsitePhone1 office1 projects2 leadersFounded 1999Updated Jun 2026

Project: Butte High School Auditorium

Service: Architectural AcousticsService: Architectural Acoustical DesignService: HIPAA Acoustical ComplianceIndustry: Arts & CultureIndustry: CommercialType: Acoustic Consulting+24 more

Blossom Consulting & Engineering Inc.

Williamsburg, VA

Engineering Land & Water Resources for the Future

WebsitePhone2 offices10 projects5 leaders11 credentialsSize Estimate: 1-25 employees

Project: Beaver Creek Watershed Assessment

Service: Water Resources EngineeringService: Watershed Analysis and Hydrologic ModelingService: Hydrologic and Hydraulic AnalysesIndustry: GovernmentIndustry: DefenseType: Civil Engineering+54 more

Buzz High Voltage, LLC

Expert Consulting for All Things High Voltage

Website6 projects1 leaders1 credentialsUpdated Jun 2026

Project: Cable Accessory Manufacturer Test Area Design

Service: High Voltage Testing & InspectionService: Dielectric TestingService: Equipment InspectionIndustry: Electric UtilitiesIndustry: GovernmentType: Electrical Engineering+33 more

CAS Consulting & Services, Inc.

Austin, TX

Civil engineering, program management, and construction management solutions for water, wastewater, and transportation infrastructure

WebsitePhone4 offices6 projects8 leaders25 credentialsFounded 1999

Project: Huebner Creek Regional Stormwater Facility

Service: Water & Wastewater EngineeringService: Water Distribution Evaluation and DesignService: Collection System Design and RehabilitationIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+31 more

Carollo Engineers, Inc.

Walnut Creek, CA

Working Wonders with Water

WebsitePhone1 office12 projects2 leaders1 credentialsFounded 1933

Project: Geren Island Water Treatment Plant Improvements

Service: Water InfrastructureService: Drinking WaterService: WastewaterIndustry: UtilitiesIndustry: Water SupplyType: Water / Wastewater Engineering+23 more

Cerjan Acoustics

Westminster, CO

Industrial Noise & Vibration Solutions: Expert Acoustic Consultation

WebsitePhone2 offices2 leaders2 credentialsFounded 2017Size Estimate: 1-9 employees

Service detail: Noise Measurements

Service: Noise MeasurementsService: Short and Long-Term MonitoringService: System Level DefinitionIndustry: Renewable EnergyIndustry: MiningType: Acoustic Consulting+25 more

Code Consultants Inc

El Segundo, CA

Experts Responsive Solutions

WebsitePhone5 offices1 leaders4 credentialsFounded 1973Updated Jun 2026

Service detail: Fire Protection and Life Safety

Service: Fire Protection and Life SafetyService: Code ConsultationService: Fire and Egress ModelingIndustry: CommercialIndustry: RetailType: Fire Protection Engineering+48 more

Community Design Solutions, LLC

Albuquerque, NM

Local engineering excellence for New Mexico and Colorado.

Website1 office3 projects7 leaders2 credentialsFounded 2024Size Estimate: 10-49 employees

Project: Savio Ridge

Service: Commercial DevelopmentService: Watershed ModelingService: HydraulicIndustry: CommercialIndustry: ResidentialType: Civil Engineering+32 more

Compliance Services Group, Inc.

Lubbock, TX

Engineers - Architects - Planners

WebsitePhone2 offices3 projects3 leaders9 credentialsFounded 1989

Project: FLETC Physical Training Facility

Service: MEP EngineeringService: Mechanical Engineering ServicesService: Electrical Systems DesignIndustry: FederalIndustry: Public SafetyType: MEP+19 more

Consolidated Environmental Engineering, LLC

Melbourne, FL

Land - Air - Water Consultants

WebsitePhone2 offices1 leaders2 credentialsFounded 1996Updated Jun 2026

Service detail: Environmental Sciences

Service: Environmental SciencesService: Environmental Site AssessmentsService: Habitat and Wildlife SurveysIndustry: Environmental & RemediationIndustry: Waste ManagementType: Environmental Engineering+28 more

Cornwell Engineering Group, Inc.

Hampton, VA

Recognized as a national leader in water treatment.

WebsitePhone1 office1 leaders2 credentials8 publicationsFounded 1985

Service detail: Water Treatment Plant Design

Service: Water Treatment Plant DesignService: Pilot Plant StudiesService: Plant TroubleshootingIndustry: Water SupplyIndustry: WastewaterType: Environmental Engineering+25 more