Public engineering firm directory

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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

Brudis & Associates, Inc.

Columbia, MD

Innovative, high quality, and responsive engineering solutions

WebsitePhone4 offices8 projects4 leaders6 credentialsFounded 1992

Project: MD 180 / MD 351 Highway Improvements

Service: Highway & PlanningService: Roadway Geometrics, Widening, Reconstruction & ImprovementsService: Streetscape DesignIndustry: GovernmentIndustry: FederalType: Civil Engineering+70 more

C.C. Johnson & Malhotra, P.C.

Baltimore, MD

Provide the Highest Level of Service to Our Clients While Delivering Value

WebsitePhone6 offices16 projects8 leadersFounded 1979Size Estimate: 50-100 employees

Project: 540 West Madison

Service: Buildings and FacilitiesService: HVAC Systems DesignService: Electrical Power and LightingIndustry: CommercialIndustry: RetailType: Civil Engineering+58 more

C2PM

Los Angeles, CA

Program & Construction Managers

WebsitePhone5 officesFounded 2002Updated Jun 2026

Service detail: Program Management

Service: Program ManagementService: Project ManagementService: Construction ManagementIndustry: TransportationIndustry: AviationType: Aviation Engineering+33 more

Ceed Civil Engineering

Vienna, VA

Licensed Civil & Structural Engineers | Nationwide Engineering Services

WebsitePhone5 officesUpdated Jun 2026

Service detail: Site Planning

Service: Site PlanningService: Standard Site PlansService: Grading PlansIndustry: ResidentialIndustry: CommercialType: Civil Engineering+21 more

Drm International Inc

Radnor, PA

Proven. Driven. Visionary.

Website2 offices1 leaders2 credentialsFounded 2000Updated Jun 2026

Service detail: Construction Management

Service: Program ManagementService: Construction ManagementService: Construction AdministrationIndustry: RailIndustry: TransitType: Architecture & Engineering+20 more

Dulles Geotechnical and Materials Testing Services, Inc.

Chantilly, VA

Geotechnical engineering, construction inspection, materials testing, and software solutions

WebsitePhone4 offices10 projects7 credentialsFounded 2012Size Estimate: 70+ employees

Project: I-495 Express Lanes Northern Extension (I-495 NEXT)

Service: Geotechnical EngineeringService: Engineering Analysis and DesignService: Foundation DesignIndustry: Highways & RoadsIndustry: TransitType: Geotechnical Engineering+36 more

EBA Engineering, Inc.

Laurel, MD

Results With No Excuses

WebsitePhone5 offices3 projects1 credentialsFounded 1981Updated Jun 2026

Project: HSWA Non-Revenue Water Tracking Project

Service: Civil / Site EngineeringService: Environmental EngineeringService: Geotechnical EngineeringIndustry: GovernmentIndustry: FederalType: Civil Engineering+27 more

EPCM Inc.

Burke, VA

Quality and client satisfaction with innovation and credibility.

WebsitePhone2 offices3 projects3 leaders2 credentialsFounded 1998

Project: Main Process Train

Service: Electrical EngineeringService: Power Distribution and GenerationService: Lighting DesignIndustry: CommercialIndustry: GovernmentType: Electrical Engineering+35 more

Globetrotters Engineering Corporation

Chicago, IL

Architecture, Engineering, Technology

WebsitePhone3 offices9 projects6 leaders10 credentialsFounded 1974

Project: O'Hare International Airport Terminal 5

Service: ArchitectureService: Condition AssessmentService: Spatial and Building DesignIndustry: TransitIndustry: TransportationType: Architecture & Engineering+48 more

Gorove Slade

Fairfax, VA

Advancing Transportation Solutions in the Communities We Serve

Website4 offices7 projects6 leaders6 credentialsFounded 1979Size Estimate: 50-100 employees

Project: The Wharf / Southwest Waterfront

Service: StudiesService: Multimodal transportation / traffic impact studiesService: Environmental traffic assessmentsIndustry: Mixed-UseIndustry: CommercialType: Transportation Engineering+40 more

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

Harshman CE Group, LLC

Washington, PA

Keep it simple - Do it right - Get it done

WebsitePhone2 offices4 projects11 leadersSize Estimate: 15-50 employeesUpdated Jun 2026

Project: Amwell Township East Hillsboro Road Bridge Replacement Project

Service: Civil EngineeringService: Site Design & Land DevelopmentService: Hydrologic & Hydraulic StudiesIndustry: GovernmentIndustry: FederalType: Civil Engineering+57 more

Hayat Brown LLC

Washington, DC

Experience. Precision. Integrity. Delivered

WebsitePhone5 offices5 projects6 leadersUpdated Jun 2026

Project: DC Power Line Undergrounding (DC PLUG)

Service: Engineering ServicesService: Design & EngineeringService: Construction Management & InspectionIndustry: GovernmentIndustry: FederalType: Civil Engineering+15 more

Kittelson & Associates

Orlando, FL

Transforming how communities move

WebsitePhone31 offices6 projects3 publicationsFounded 1984Size Estimate: 200-500 employees

Project: Lancaster County Freight Infrastructure Prioritization

Service: Transportation PlanningService: Corridor and regional studiesService: Freight planning and infrastructure prioritizationIndustry: GovernmentIndustry: FederalType: Transportation Engineering+44 more

LJB Inc.

Lima, OH

Improving the quality of life for the clients, communities and individuals we serve.

Website10 offices5 projects1 leaders4 credentialsFounded 1966Updated Jun 2026

Project: Woodland Avenue Pump Station Rehab

Service: Structural EngineeringService: Tilt-Up Concrete DesignService: Composite Bridge DesignIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+45 more

LS Technologies, LLC

Washington, DC

Transformation That Moves the Nation. Delivering Airspace Innovation Now.

WebsitePhone1 office3 projects13 leaders2 credentialsFounded 2000

Project: Ryan Airfield Air Traffic Control Tower Upgrade

Service: Engineering ServicesService: Systems EngineeringService: Air Traffic Control EngineeringIndustry: AviationIndustry: AerospaceType: Aviation Engineering+20 more

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

Loring Consulting Engineers, Inc.

New York, NY

Loring Consulting Engineers, Inc. is an award-winning MEP consulting engineering firm committed to delivering high-value, smart engineering solutions tailored to optimize each client's investment and long-term needs. It employs over 200 staff including Professional Engineers, LEED Accredited Professionals, Certified Energy Managers, and Certified Building Commissioning Agents across nine North American offices. Loring serves premier higher education, healthcare, and cultural institutions, partnering with leading architects, developers, and private and public sector owners.

Website8 offices1 projectsFounded 1956Size Estimate: 200+ employeesUpdated Jun 2026

Project: Delacorte Theater

Service: MEP EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: HealthcareIndustry: EducationType: MEP+11 more

M&J Engineering

New Hyde Park, NY

Innovative and State-Of-The-Art Solutions

WebsitePhone18 offices11 projects13 leadersFounded 2004Updated Jun 2026

Project: MTA Metro-North Railroad Penn Station Access

Service: Consulting EngineeringService: Environmental ServicesService: Construction ManagementIndustry: TransportationIndustry: TransitType: Civil Engineering+7 more

Michael Baker International

Pittsburgh, PA

We Make a Difference

Website18 offices5 projects15 leaders5 credentials4 publicationsFounded 1940

Project: Fika Remote Footbridge Build

Service: Infrastructure EngineeringService: Roadway and Highway DesignService: Bridge Design and InspectionIndustry: TransportationIndustry: Highways & RoadsType: Architecture & Engineering+46 more

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

O&S Associates

Hackensack, NJ

Experts in new design and restoration engineering

Website6 offices6 projects16 leaders11 credentialsFounded 1996Size Estimate: 100-249 employees

Project: H Mart American Dream

Service: Design and Restoration EngineeringService: New Architectural DesignService: Restoration and RenovationIndustry: CommercialIndustry: ResidentialType: Architecture & Engineering+32 more

ProSource Consulting, LLC

Washington, DC

ProSource Consulting, LLC is a Washington, DC metropolitan facilities management and engineering support firm serving federal, state, local, commercial, and institutional clients. It provides operations and maintenance, facilities engineering, spatial data management, inspections, CAD design, project management, and administrative support, with named client work spanning Treasury, NIH, ATF, GSA, VA, DOE, and FDA facilities.

WebsitePhone2 offices1 leaders8 credentialsUpdated Jun 2026

Service detail: Facilities Operations & Maintenance

Service: Facilities Operations & MaintenanceService: Facilities and Engineering ManagementService: Engineering and Management StudiesIndustry: GovernmentIndustry: FederalType: Mechanical Engineering+48 more