Public engineering firm directory

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Advantus Engineers

Pittsburgh, PA

Advantus Engineers is a Pittsburgh-based engineering consulting practice founded in 2004, specializing in building commissioning, sustainability consulting, MEP assessments, construction quality assurance, and environmental compliance. It serves public, institutional, and commercial clients across the Pittsburgh region. Over more than two decades, the practice has supported LEED certifications, water quality programs, and on-call MEP engineering for clients including the Pittsburgh Water and Sewer Authority and the David L. Lawrence Convention Center.

WebsitePhone1 office7 projects9 leaders3 credentialsFounded 2004

Project: Western Butler County Authority Administration Building

Service: Building CommissioningService: Design and Submittal AnalysisService: Controls and Checklist FormulationIndustry: GovernmentIndustry: CommercialType: MEP+40 more

Allen + Shariff

Columbia, MD

Engineering Together

WebsitePhone7 offices3 projects9 leadersUpdated Jun 2026

Project: Wallops Mission Operations Command Center

Service: MEP EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: CommercialIndustry: ResidentialType: MEP+34 more

Atlantic Engineering Services

Pittsburgh, PA

Bringing Architectural Visions to Life

WebsitePhone3 offices8 projects5 leaders2 credentials3 publications

Project: Pittsburgh Athletic Association Renovation

Service: Structural EngineeringService: Steel DesignsService: ConcreteIndustry: Senior LivingIndustry: GovernmentType: Structural Engineering+38 more

Barton Associates Inc

York, PA

We Make Buildings Work

WebsitePhone6 offices3 projects94 leadersFounded 1968Size Estimate: 100+ employees

Project: Price Auditorium at Lock Haven University

Service: MEP EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: EducationIndustry: HealthcareType: MEP+14 more

Buchart Horn, Inc.

York, PA

Shaping the built environment with precision, creativity, and purpose since 1945

WebsitePhone9 offices6 projects4 leadersFounded 1945Size Estimate: 100-500 employees

Project: I-40/I-240 Interchange Improvements, Memphis, TN

Service: Water Resources EngineeringService: Wastewater treatment plant engineeringService: Water distribution and collection systemsIndustry: Water ResourcesIndustry: WastewaterType: Architecture & Engineering+41 more

D'Appolonia Engineers

Pittsburgh, PA

We create foundations for the future.

WebsitePhone1 office13 credentialsFounded 1956Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Foundation DesignService: Site Geotechnical ExplorationIndustry: MiningIndustry: Electric UtilitiesType: Civil Engineering+38 more

DESMAN

Boston, MA

Client-Focused Parking Solutions

WebsitePhone9 offices5 projects3 leaders3 credentialsFounded 1973

Project: Ft. Duquesne and Sixth Parking Garage Facade and Renovation

Service: Parking ConsultingService: Supply and Demand StudiesService: Concept PlanningIndustry: EducationIndustry: HealthcareType: Structural Engineering+30 more

Erdman Anthony Holding Company Inc

Rochester, NY

We Are the Community That Builds Communities

WebsitePhone8 offices5 projects1 leaders3 credentialsFounded 1954

Project: PA Route 75 over Norfolk Southern Bridge Replacement

Service: Transportation EngineeringService: Bridge and Structure DesignService: Highway and Street DesignIndustry: BridgesIndustry: Highways & RoadsType: Civil Engineering+66 more

H F Lenz Co

Johnstown, PA

Trusted. Experienced. Multidisciplined.

Website5 offices11 leaders2 credentialsFounded 1946Updated Jun 2026

Service detail: Energy Services

Service: Civil EngineeringService: CommissioningService: Communications EngineeringIndustry: Arts & CultureIndustry: AviationType: Civil Engineering+31 more

HEAPY Engineering, Inc.

Dayton, OH

Engineering Sustainability Commissioning

WebsitePhone8 offices5 leaders2 credentialsFounded 1945Updated Jun 2026

Service detail: Mechanical, Electrical, and Plumbing Engineering

Service: Mechanical, Electrical, and Plumbing EngineeringService: Lighting DesignService: Technology DesignIndustry: HealthcareIndustry: EducationType: MEP+26 more

Herbert, Rowland & Grubic, Inc.

Harrisburg, PA

Engineering | Planning | Infrastructure Solutions

Website9 offices7 leaders3 credentialsFounded 1962Size Estimate: 400+ employeesUpdated Jun 2026

Service detail: Municipal Engineering

Service: Municipal EngineeringService: Municipal RepresentationService: Capital Improvement Planning & DesignIndustry: GovernmentIndustry: FederalType: Civil Engineering+96 more

Hillis-Carnes Engineering Associates

Annapolis Junction, MD

Your Foundation for Success

WebsitePhone21 offices7 projects3 leaders3 credentialsFounded 1993

Project: Anthem House Luxury Residential Development

Service: Geotechnical EngineeringService: Subsurface investigations and soil boringsService: Foundation design recommendationsIndustry: CommercialIndustry: Land DevelopmentType: Environmental Engineering+56 more

LLI Engineering, Inc.

Pittsburgh, PA

Innovative Solutions in Architecture & Engineering Since 1910

WebsitePhone1 office12 projects9 leaders4 credentialsFounded 1910

Project: Pittsburgh International Airport Microgrid

Service: Electrical EngineeringService: Power Distribution SystemsService: Standby Generation and MicrogridsIndustry: CommercialIndustry: HealthcareType: MEP+39 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

Mackin Engineering

Pittsburgh, PA

Civil engineering, transportation, land development, and facilities consulting

WebsitePhone4 offices6 projectsFounded 1960Updated Jun 2026

Project: Leechburg Bridge Inspection

Service: Transportation EngineeringService: Structural InspectionService: Structural Engineering DesignIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+22 more

McCormick Taylor

Philadelphia, PA

Our work moves people. Our people move us.

Website16 offices15 projects24 leaders8 credentialsFounded 1946Updated Jun 2026

Project: Penrose Roundabout

Service: Roadway & Transportation EngineeringService: Highway DesignService: Bridge DesignIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+44 more

McKim & Creed

Raleigh, NC

People Helping People Solve Complex Infrastructure Challenges

Website7 offices7 projects2 credentialsFounded 1984Size Estimate: 500-1,000 employeesUpdated Jun 2026

Project: City of Sarasota Lift Station 87

Service: Water & Wastewater EngineeringService: Water ManagementService: Wastewater ManagementIndustry: Water SupplyIndustry: WastewaterType: Automation & Controls+82 more

McKinley Architecture and Engineering

Wheeling, WV

Delivering successful projects through experience and innovation.

WebsitePhone7 offices5 credentialsUpdated Jun 2026

Service detail: Architecture

Service: ArchitectureService: EngineeringService: Structural engineeringIndustry: EducationIndustry: HealthcareType: Architecture & Engineering+20 more

O'Donnell & Naccarato

Philadelphia, PA

Local Expertise. National Reach.

WebsitePhone10 offices6 projects4 leaders4 credentialsFounded 1981

Project: Swarthmore College Sharples Dining Hall & Community Commons

Service: Structural EngineeringService: New ConstructionService: Adaptive Reuse & RenovationIndustry: CommercialIndustry: HealthcareType: Structural Engineering+22 more

Ravi Engineering & Land Surveying, P.C.

Rochester, NY

Over 30 Years of Engineering Innovation and Excellence

WebsitePhone6 offices5 projects12 leaders3 credentialsFounded 1995

Project: Seneca Falls DRI

Service: Structural EngineeringService: Building Structural DesignService: Foundation and Framing AnalysisIndustry: BridgesIndustry: TransportationType: Structural Engineering+29 more

Resource International, Inc.

Columbus, OH

Your Entire Project Life Cycle

WebsitePhone8 offices9 projects1 leaders7 credentialsFounded 1973

Project: Blueprint Clintonville Professional Construction Management Services

Service: Transportation EngineeringService: Pavement Design & EngineeringService: Roadway DesignIndustry: EducationIndustry: HealthcareType: Civil Engineering+33 more

The Gateway Engineers, Inc.

Pittsburgh, PA

People, Projects and Purpose

WebsitePhone3 officesUpdated Jun 2026

Service detail: Project Management

Service: Site CivilService: StructuralService: GeotechnicalIndustry: GovernmentIndustry: EducationType: Civil Engineering+23 more

The Intelligence & Security Associates, LLC

Arlington, VA

Strategic Advantage. Tailored Solutions. Excellence in Delivery.

WebsitePhone3 offices1 projects1 leaders1 credentials1 publications

Project: Portfolio Management in Practice

Service: Mission Engineering & Systems IntegrationService: New Capability DevelopmentService: Current System IntegrationIndustry: Intelligence & National SecurityIndustry: DefenseType: Defense Engineering+18 more

Thermo Systems LLC

East Windsor, NJ

A Premier Systems Integration Partner

WebsitePhone31 offices8 projects2 credentialsFounded 1998Updated Jun 2026

Project: Catalent Steam Humidifier Addition

Service: Automation and Control SystemsService: Controls for Energy and Industrial UtilitiesService: Building Automation Systems (BAS)Industry: Data CentersIndustry: Mission Critical FacilitiesType: Automation & Controls+31 more