Public engineering firm directory

Find engineering consulting firms by capability and location.

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11 results

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Alphatec PC

Washington, DC

Alphatec PC is a Washington, D.C.-based architectural and engineering design firm specializing in architectural, mechanical, electrical, and plumbing design for mission-critical facilities, secure spaces, and public sector projects. With more than 57 years of experience and over 18 million square feet of completed project area, its integrated teams have earned more than 35 industry awards. Alphatec also develops VEGA, a digital twin platform combining 3D modeling, augmented reality, and virtual reality for design visualization and stakeholder engagement.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Architecture

Service: ArchitectureService: Structural EngineeringService: Civil EngineeringIndustry: GovernmentIndustry: FederalType: Architecture & Engineering+7 more
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American Infrastructure Development, Inc.

Tampa, FL

Innovative Architectural and Engineering Solutions

WebsitePhone7 offices11 projects6 leadersFounded 2009Updated Jun 2026

Project: Henry E. Rohlsen International Airport (STX) - Terminal Improvements, Phase 1

Service: ArchitectureService: Airport Terminals, FBOs, and GA FacilitiesService: Hotels, Administrative Offices, and Public-Use BuildingsIndustry: AviationIndustry: AirportsType: Architecture & Engineering+26 more
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CNC Civil Services, LLC

Washington, DC

Civil Engineering. Planning. Site Development. Surveying.

WebsitePhone2 offices7 projects2 credentialsSize Estimate: 10-49 employeesUpdated Jun 2026

Project: Capital Exports Warehouse

Service: Civil EngineeringService: Site Engineering / Land DevelopmentService: Water Resources EngineeringIndustry: Electric UtilitiesIndustry: Water SupplyType: Civil Engineering+34 more
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Delon Hampton & Associates, Chartered

Washington, DC

Engineering is our practice. Commitment to excellence is our passion.

WebsitePhone5 offices10 projects8 leaders12 credentialsFounded 1973

Project: DC Water Clean Rivers

Service: Civil EngineeringService: Site Design and FeasibilityService: Infrastructure Evaluation and DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+27 more
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Guernsey

Oklahoma City, OK

Realize the Difference

WebsitePhone5 offices7 projects6 leaders5 credentialsFounded 1928

Project: Boeing High-Bay Research Facility

Service: ArchitectureService: Building DesignService: Interior DesignIndustry: DefenseIndustry: FederalType: Architecture & Engineering+35 more
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HDR | Nova Consulting

Miami (Doral), FL

HDR | Nova Consulting specializes in civil and environmental engineering, construction management, and program management services. It supports public sector clients across Florida, New York, Washington D.C., and Maryland, focusing on water resources, transportation, infrastructure resilience, and environmental planning. Its multidisciplinary team includes professional engineers, scientists, and geologists who deliver services from initial project planning and environmental assessments through construction and final close-out.

WebsitePhone5 offices5 projects7 leadersUpdated Jun 2026

Project: Gowanus Pump Station

Service: Civil EngineeringService: Civil Infrastructure DesignService: Stormwater ManagementIndustry: Water ResourcesIndustry: WastewaterType: Civil Engineering+23 more
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KPFF Consulting Engineers

Portland, OR

KPFF exists to engineer opportunities that have a positive impact on people, places, and the planet.

Website33 offices5 projectsSize Estimate: 1,000+ employeesUpdated Jun 2026

Project: Portland International Airport (PDX), Terminal Core Redevelopment

Service: Structural EngineeringService: Bridge EngineeringService: Protective DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+39 more
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Lessani PLLC

Washington, DC

Expert Construction Management and Program Oversight

WebsitePhone1 office6 leaders2 credentialsFounded 2016Size Estimate: 1-10 employees

Service detail: Program & Construction Management (PM/CM)

Service: Program & Construction Management (PM/CM)Service: Program ManagementService: Construction ManagementIndustry: CommercialIndustry: EducationType: Civil Engineering+13 more
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Nitsch Engineering

Boston, MA

Building Better Communities With You

WebsitePhone5 offices5 projects5 leaders3 credentials3 publications

Project: Kennedy Street Green Infrastructure

Service: Civil EngineeringService: Due diligence and permitting strategyService: Site development advisory servicesIndustry: EducationIndustry: AirportsType: Civil Engineering+88 more
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Somat Engineering, Inc.

Detroit, MI

Infrastructure Engineering Solutions

WebsitePhone8 offices8 projects2 leaders7 credentialsFounded 1986

Project: M-1 Rail (QLine)

Service: Geotechnical EngineeringService: Subsurface InvestigationService: Foundation DesignIndustry: TransportationIndustry: Highways & RoadsType: Geotechnical Engineering+49 more
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Wiles Mensch Corporation

Washington, DC

Designing Dynamic Development

Website1 office9 projects4 leadersUpdated Jun 2026

Project: Parc Riverside

Service: Civil EngineeringService: Feasibility Studies and Due DiligenceService: Site DesignIndustry: GovernmentIndustry: TransitType: Civil Engineering+40 more
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