Public engineering firm directory

Find engineering consulting firms by capability and location.

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Allied Companies L L C

Washington, DC

Program Integration for Complex Infrastructure at Scale.

Website2 offices1 leadersUpdated Jun 2026

Service detail: Environmental Consulting

Service: Environmental ConsultingService: Addressing Regulatory RequirementsService: Sustainability Challenges To Mitigate ImpactIndustry: WastewaterIndustry: Water SupplyType: Environmental Engineering+26 more

Carolina Transportation Engineers & Associates

Charlotte, NC

Passionate about Engineering. Active in Our Profession. Driven by Our Values.

Website3 offices5 projects5 leaders7 credentialsFounded 2016Updated Jun 2026

Project: SC 124 over Georges Creek

Service: Engineering DesignService: Bridge and Structural DesignService: Roadway DesignIndustry: BridgesIndustry: RailType: Civil Engineering+25 more

Engineering Design Technologies, Inc.

Marietta, GA

Engineering Design Technologies (EDT) is a fully integrated engineering and design-build firm founded in 1993 and headquartered in Marietta, Georgia. EDT delivers multi-discipline engineering, architecture, construction, and program management across federal, municipal, commercial, healthcare, aviation, and transportation markets from seven offices spanning the Southeast, Mid-Atlantic, and US Virgin Islands. Its four divisions cover engineering, architecture (EDT-THA), construction (EDT Constructors), and development (EDT Development).

WebsitePhone7 offices6 projects1 credentialsFounded 1993Size Estimate: 50-200 employees

Project: CDC Emergency Operations Center

Service: Civil EngineeringService: Stormwater drainage assessment and modelingService: Transportation engineeringIndustry: DefenseIndustry: FederalType: Architecture & Engineering+47 more

Infrastructure Consulting & Engineering, LLC

West Columbia, SC

A Full Service Transportation Consulting and Design Firm

WebsitePhone15 offices6 projects5 credentialsFounded 2005Size Estimate: 500-1,000 employees

Project: NC-540 (Triangle Expressway SE Extension)

Service: Roadway and Highway DesignService: Roadway widening and extensionService: Major interchange and intersection designIndustry: TransportationIndustry: GovernmentType: Civil Engineering+85 more

K&A Engineering Consulting

Syracuse, NY

Powering Energy Solutions

WebsitePhone9 offices17 leaders3 credentialsFounded 2016Size Estimate: 400 employees

Service detail: Substation Services

Service: Substation ServicesService: Substation DesignService: Distribution ServicesIndustry: Electric UtilitiesIndustry: Power Transmission & DistributionType: Power & Utility Engineering+15 more

Kennedy/Jenks Consultants, Inc.

San Francisco, CA

Tailored Solutions for Transmission and Conveyance Projects

Website34 offices13 projects2 leaders9 credentialsUpdated Jun 2026

Project: EchoWater Project Site Preparation

Service: Air QualityService: MACT compliance review and plan developmentService: BACT reviewIndustry: WastewaterIndustry: Water SupplyType: Civil Engineering+38 more

Larson Design Group, Inc.

Williamsport, PA

National Presence. Hyper-Local Focus.

WebsitePhone18 offices4 leadersFounded 1986Updated Jun 2026

Service detail: Civil Engineering

Service: Architecture & Interior DesignService: Civil EngineeringService: Site/Land DevelopmentIndustry: CommercialIndustry: EducationType: Architecture & Engineering+78 more

RS&H

Jacksonville, FL

Creating Tomorrow, Together.

Website74 offices3 leaders2 credentialsFounded 1941Updated Jun 2026

Service detail: Architecture

Service: ArchitectureService: Interior DesignService: Landscape ArchitectureIndustry: AerospaceIndustry: AviationType: Architecture & Engineering+25 more

Ready 3 LLC

Oklahoma City, OK

Your Success | Our Mission

WebsitePhone12 offices7 projectsUpdated Jun 2026

Project: F-35 Readiness Directorate Support

Service: Sustainment SupportService: Functional & Direct Programmatic SupportService: Product & Life Cycle PlanningIndustry: DefenseIndustry: FederalType: Defense Engineering+33 more

The Haskell Company

Jacksonville, FL

Certainty of Outcome, Cost and Schedule

WebsitePhone15 offices4 projectsFounded 1965Updated Jun 2026

Project: Fleet Readiness Center Hangar 101 Repairs

Service: ArchitectureService: EngineeringService: Construction ManagementIndustry: IndustrialIndustry: ManufacturingType: Architecture & Engineering+11 more

W&A Engineering

Athens, GA

Improving communities with innovative design, effective and efficient engineering, and professional service.

WebsitePhone5 offices6 projectsFounded 1999Size Estimate: 70 employeesUpdated Jun 2026

Project: Nissan Stadium

Service: Civil EngineeringService: Transportation & Traffic EngineeringService: Land SurveyingIndustry: GovernmentIndustry: TransportationType: Civil Engineering+17 more

Zephyr Designs Engineering & Strategy Consulting

Durham, NC

Leading Innovation with Engineering & Business Expertise

WebsitePhone1 office1 projects1 leadersSize Estimate: 1 employeesUpdated Jun 2026

Project: Handheld Medical Device Design and Regulatory Compliance

Service: High-Precision Test Equipment DesignService: Integrated Circuit Tester DevelopmentService: High-Resolution GPS SystemsIndustry: Medical DevicesIndustry: ElectronicsType: Electrical Engineering+19 more