Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

Industry: infrastructureFirm type: environmental-engineeringClear all
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398 results

Showing 1-24 of 398

Firm nameRecently updatedProfile depthOffice countSizeAgeLocation match
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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 projects
Service: Highways, Roads, and StreetsService: Roadway geometryIndustry: TransportationType: Civil Engineering+31 more
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3T Design & Development LLC

Kansas City, MO

Air. Land. Water.

WebsitePhone1 office1 leaders
Service: Air Quality and Environmental ComplianceService: Air Quality Permitting SupportIndustry: TransportationType: Civil Engineering+27 more
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5020 Engineering Resource Group, Incorporated

Civil, Water Resources, and Environmental Engineering Services

Website4 leaders1 credentialsFounded 2022
Service: Water and Wastewater EngineeringService: Water and Wastewater Conveyance SystemsIndustry: Water ResourcesType: Civil Engineering+21 more
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A. Morton Thomas and Associates, Inc.

Rockville, MD

Celebrating 70 Years of Engineering and Design

WebsitePhone1 office4 projects
Service: Site and Civil EngineeringService: Site DevelopmentIndustry: TransportationType: Civil Engineering+45 more
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A.E. Hodsdon Consulting Engineers

Waterville, ME

Leaders in professional engineering for over 40 years

WebsitePhone1 office1 projects
Service: EngineeringService: Water Systems DesignIndustry: GovernmentType: Civil Engineering+33 more
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A1 Consulting Group, Inc.

Raleigh-Durham, NC

Leaders in Design, Construction, and Environmental Services

WebsitePhone1 office8 projects
Service: Engineering and Design ServicesService: Geotechnical and Geological EngineeringIndustry: AirportsType: Civil Engineering+43 more
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ABAM Engineers Inc.

Houston, TX

Driving Innovation and Digitization in Engineering

WebsitePhone2 officesUpdated Jun 2026
Service: Civil and Infrastructure EngineeringService: Site Analysis and DesignIndustry: CommercialType: Civil Engineering+40 more
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ABNA Engineering, Inc.

St. Louis, MO

Civil & Structural Engineering, Design Services, General Contracting, and Construction Management

WebsitePhone3 offices4 projects
Service: Civil EngineeringService: Water Resources EngineeringIndustry: InfrastructureType: Civil Engineering+43 more
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ACS Services, LLC

Mesa, AZ

Geotechnical engineering, material testing, special inspections, and drilling services in Arizona

WebsitePhone1 office2 leaders
Service: Geotechnical EngineeringService: Construction Materials TestingIndustry: InfrastructureType: Geotechnical Engineering+24 more
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ACT Engineers, Inc.

Robbinsville, NJ

Civil, Coastal, and Environmental Engineering and Consulting Practice

WebsitePhone3 offices5 projects
Service: Civil/Site EngineeringService: Coastal EngineeringIndustry: GovernmentType: Civil Engineering+30 more
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AECOM

AECOM is a trusted global infrastructure firm delivering professional services spanning cities, transportation, buildings, water, new energy, and the environment. Founded in 1990, with predecessor firms dating back over 120 years, AECOM is ranked #1 in general building, transportation, and water by Engineering News-Record (2025), listed at #259 on the Fortune 500, and generated $16.1 billion of revenue in fiscal year 2024. AECOM delivers planning, design, engineering, consulting, and program and construction management services throughout the full project lifecycle.

Website3 credentialsFounded 1990Updated Jun 2026
Service: Planning and DesignService: Program and Construction ManagementIndustry: TransportationType: Architecture & Engineering+15 more
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AEG - A SOCOTEC Company

Mechanicsburg, PA

Engineering, Surveying, and Inspections

WebsitePhone1 office3 projects
Service: Geotechnical EngineeringService: Geotechnical Engineering and Foundation DesignIndustry: TransportationType: Geotechnical Engineering+66 more
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AESCO, Inc.

Huntington Beach, CA

Building America from the ground up since 1993

WebsitePhone1 office3 projects
Service: Geotechnical EngineeringService: Geotechnical drilling and field explorationIndustry: CommercialType: Geotechnical Engineering+27 more
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AIM Engineering & Surveying, Inc.

Fort Myers, FL

Innovative Engineering Solutions Since 1980

WebsitePhone5 offices8 projects
Service: Transportation Engineering & DesignService: RoadwaysIndustry: TransportationType: Transportation Engineering+35 more
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AKS Engineering & Forestry

Tualatin, OR

Practical Solutions. Designed to Last.

WebsitePhone1 officeFounded 1996
Service: Civil EngineeringService: Site Design & GradingIndustry: InfrastructureType: Civil Engineering+37 more
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APS Engineering and Testing

Baton Rouge, LA

APS Lays the Foundation for a Better World

WebsitePhone2 offices1 leaders
Service: Geotechnical EngineeringService: Subsurface InvestigationIndustry: InfrastructureType: Civil Engineering+24 more
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ARM Group LLC

Hummelstown, PA

Precise. Responsive. Solutions.

WebsitePhone1 office1 projects
Service: Civil Engineering & Land SurveyingService: Site Planning & EntitlementIndustry: CommercialType: Automation & Controls+54 more
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AS Engineering and Consulting, LLC

Marietta, GA

Value engineering to build a safer tomorrow.

WebsitePhone1 office1 leaders
Service: Geotechnical and Geological StudiesService: Subsurface Soil ExplorationIndustry: Land DevelopmentType: Geotechnical Engineering+20 more
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ATALA ECR, Inc.

El Cajon, CA

Staffing - Construction - Remediation

WebsitePhone1 office1 credentials
Service: Project StaffingService: Construction SuperintendentsIndustry: FederalType: Environmental Engineering+26 more
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ATCS, Inc.

Engineering Innovative Solutions

Website9 leadersUpdated Jun 2026
Service: Environmental PlanningService: Air & Noise AbatementIndustry: TransportationType: Civil Engineering+28 more
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ATOKA, Inc.

Hot Springs, AR

Engineering and Environmental Consultants

WebsitePhone2 offices1 projects
Service: Civil EngineeringService: Strategic Planning and Land UseIndustry: Environmental & RemediationType: Civil Engineering+44 more
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AULtec, Inc.

Gaithersburg, MD

Professional Civil Engineering and Land Surveying Services

Website1 office5 projects2 leaders
Service: Civil EngineeringService: Site & Land DevelopmentIndustry: GovernmentType: Civil Engineering+21 more
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AWK Consulting Engineers, Inc.

Turtle Creek, PA

Quality, innovative, and cost-effective consulting engineering solutions

WebsitePhone2 offices4 leaders
Service: Geotechnical EngineeringService: Drilling ServicesIndustry: GovernmentType: Civil Engineering+19 more
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Aaron Swan & Associates, Inc.

Pierre, SD

Unwavering Quality. Reliable Results.

WebsitePhone4 offices7 projects
Service: Civil Design and EngineeringService: Site Master Planning and LayoutIndustry: WastewaterType: Materials Testing+33 more
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