Public engineering firm directory

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City: Philadelphia Firm type: structural-engineering Clear all

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Advanced Infrastructure Design, Inc.

Hamilton, NJ

Advanced Infrastructure Design, Inc. (AID) is a consulting engineering practice established in 1998. Headquartered in Hamilton, New Jersey, with an office in Philadelphia, Pennsylvania, it is staffed by licensed Professional Engineers, scientists, researchers, and technicians. The practice specializes in transportation infrastructure preservation, deploying advanced non-destructive testing (NDT) technologies to evaluate and design solutions for roads, bridges, tunnels, airports, substructures, foundations, and parking structures. It is led by President Mojgan Mohtashami, PhD, MBA.

Website2 offices1 leadersFounded 1998Size Estimate: 10-30 employeesUpdated Jun 2026

Service detail: Pavement Engineering

Service: Pavement EngineeringService: Comprehensive Non-Destructive Field TestingService: Functional LCMS AssessmentIndustry: GovernmentIndustry: TransportationType: Civil Engineering+57 more

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Azar Design Co PC

Buffalo, NY

Bridging grace and imagination with functionality while delivering pragmatic solutions.

WebsitePhone5 offices4 projects8 leaders2 credentialsFounded 1979

Project: Jacobs School of Medicine & Biomedical Sciences

Service: ArchitectureService: Architectural DesignService: Historic PreservationIndustry: EducationIndustry: HealthcareType: Architecture & Engineering+112 more

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Burns Engineering, Inc.

Philadelphia, PA

Partners in Reliability, Resilience, Innovation, Sustainability, and Safety

Website6 offices14 projects12 leaders15 credentials5 publicationsFounded 1960

Project: Pittsburgh International Airport Terminal Modernization Program

Service: Electrical EngineeringService: Power Infrastructure RenewalService: Campus Electrical ModernizationIndustry: AviationIndustry: RailType: Aviation Engineering+52 more

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David Mason + Associates

St. Louis, MO

Exceptional Engineering. Innovative Construction Services. Dedicated to Our People.

WebsitePhone7 offices7 projectsFounded 1989Size Estimate: 100-250 employeesUpdated Jun 2026

Project: Jefferson National Expansion Memorial - Gateway Arch Grounds Renovations

Service: Civil EngineeringService: Structural EngineeringService: Survey and 3D ScanningIndustry: HealthcareIndustry: EducationType: Civil Engineering+20 more

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H & J International, PC

Philadelphia, PA

Knowledge-Based Engineers & Management Consultants

WebsitePhone3 offices3 leadersFounded 2002Size Estimate: 30+ employeesUpdated Jun 2026

Service detail: Transportation Engineering

Service: Transportation EngineeringService: Bridge DesignService: Roadway and Highway DesignIndustry: TransportationIndustry: BridgesType: Civil Engineering+19 more

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HBK Engineering, LLC

Chicago, IL

A Proven Leader in Utility Engineering

WebsitePhone29 offices6 credentialsFounded 1998Size Estimate: 900+ employeesUpdated Jun 2026

Service detail: Electrical Utility Infrastructure Design

Service: Electrical Utility Infrastructure DesignService: Transmission and distribution line designService: Substation designIndustry: Electric UtilitiesIndustry: Power GenerationType: Environmental Engineering+48 more

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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

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Joseph B. Callaghan, Inc.

Philadelphia, PA

Your Structure. Our Solution.

WebsitePhone2 offices14 projects4 leaders6 credentialsFounded 1967

Project: St. Patricks Rittenhouse Square Facade & Roof Rehabilitation

Service: Building EnvelopesService: Facade Assessment and RepairService: Historic RestorationIndustry: EducationIndustry: CommercialType: Structural Engineering+19 more

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Keast & Hood

Philadelphia, PA

Keast & Hood is a Philadelphia-based structural engineering firm with more than 70 years of experience providing design-forward solutions for new construction, historic preservation, building envelope assessment, and structural investigations. Headquartered in Center City, its work spans the Northeast and includes high-profile colleges and universities, cultural institutions, civic buildings, and healthcare facilities.

WebsitePhone1 office4 leadersUpdated Jun 2026

Service detail: New Construction

Service: New ConstructionService: Historic PreservationService: Renovations, Additions, and Adaptive ReuseIndustry: EducationIndustry: Historic PreservationType: Structural Engineering+6 more

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Kheops Architecture Engineering Survey D P C

Atlanta, GA

Evaluate - Solve - Deliver

Website10 offices7 leaders2 credentialsFounded 1917Updated Jun 2026

Service detail: Construction Services

Service: ArchitectureService: Civil and Site EngineeringService: Construction ServicesIndustry: Arts & CultureIndustry: AviationType: Architecture & Engineering+31 more

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Larsen & Landis Structural Engineers

Philadelphia, PA

Larsen & Landis is a structural engineering firm serving architects, developers, designers, contractors, and building owners across the Philadelphia and Wilmington region. Its engineers handle structural design, evaluation of existing structures, construction support, historic preservation assessments, and facade reviews across a wide range of building types including educational facilities, multi-family housing, religious buildings, commercial properties, industrial facilities, and research laboratories.

WebsitePhone2 offices4 leadersUpdated Jun 2026

Service detail: Structural Engineering and Design

Service: Structural Engineering and DesignService: Educational FacilitiesService: Multi-Family HousingIndustry: EducationIndustry: ReligiousType: Structural Engineering+31 more

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LeMessurier Consultants Inc

Boston, MA

Engineering excellence for structures and enclosures.

WebsitePhone3 offices6 projects63 leaders5 credentialsSize Estimate: 51-200 employees

Project: Boston University Duan Family Center for Computing and Data Sciences

Service: Structural EngineeringService: Tall BuildingsService: Long SpanIndustry: EducationIndustry: HealthcareType: Materials Engineering+24 more

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Leake Engineering, LLC

Philadelphia, PA

Leake Engineering, LLC is a multi-discipline engineering consulting practice headquartered in Philadelphia, Pennsylvania, with licensure in all 50 states. Originating in 2007 on Leake Avenue in New Orleans near the Army Corps of Engineers district during post-Katrina rebuilding, the practice subsequently relocated its primary operations to the Greater Philadelphia area. It serves commercial, residential, multi-family, industrial, and government clients nationwide. Core services span structural engineering, civil engineering, geotechnical investigations, and field inspection services.

WebsitePhone3 offices1 leadersFounded 2007Updated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Facilities Maintenance and RepairService: Multi-family, Commercial, and Industrial DesignIndustry: CommercialIndustry: ResidentialType: Structural Engineering+28 more

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Mainstay Engineering Group, Inc.

Blue Bell, PA

Your Engineering Partner For Tomorrow's Innovations

WebsitePhone3 offices5 leadersFounded 2002Updated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Civil EngineeringIndustry: Life SciencesIndustry: PharmaceuticalType: Civil Engineering+10 more

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McLaren Engineering Group

New York City, NY

applied ingenuity

Website2 offices9 projects11 leadersFounded 1977Size Estimate: 201-500 employeesUpdated Jun 2026

Project: 164 Kent Waterfront Towers

Service: Structural EngineeringService: New Construction Engineering + DesignService: Additions, Alterations, Renovations + RepairsIndustry: TransportationIndustry: MarineType: Civil Engineering+69 more

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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

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Modjeski and Masters, Inc.

Mechanicsburg, PA

One of the world's leading bridge engineering practices

WebsitePhone19 offices7 projects2 leaders2 credentialsFounded 1893

Project: Hawk Falls Bridge Replacement

Service: Bridge DesignService: Fixed Bridge DesignService: Movable Bridge DesignIndustry: BridgesIndustry: TransportationType: Structural Engineering+26 more

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Mueser Rutledge Consulting Engineers

New York, NY

Built on firm foundations

WebsitePhone3 offices8 projects11 leaders16 credentials5 publications

Project: One World Trade Center

Service: Geotechnical EngineeringService: Subsurface InvestigationsService: Earthquake EngineeringIndustry: BridgesIndustry: CommercialType: Geotechnical Engineering+41 more

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NDI Engineering Company

Thorofare, NJ

Innovative and Technology for Tomorrow's World

WebsitePhone3 offices1 projects2 credentialsFounded 1966Size Estimate: 100-499 employees

Project: NSWCPD Test Site Design and Engineering Support

Service: Engineering & Technical ServicesService: Component and System DesignService: Modeling, Simulation & FEAIndustry: MarineIndustry: DefenseType: Marine Engineering+25 more

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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

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Orndorf & Associates, Inc.

Philadelphia, PA

Designing your vision, one detail at a time.

Website1 office7 projects3 leaders6 credentialsFounded 1998Updated Jun 2026

Project: LED Displays at Truist Park

Service: Structural Design & AnalysisService: New Construction DesignService: Specialty Structural DesignIndustry: CommercialIndustry: EducationType: Structural Engineering+26 more

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Penn Fusion Engineering

Philadelphia, PA

Trusted Quality

WebsitePhone1 office1 credentialsFounded 2011Updated Jun 2026

Service detail: Solar Structural Engineering

Service: Solar Structural EngineeringService: Residential Roof Structural AnalysisService: Commercial PV Roof AssessmentIndustry: CommercialIndustry: IndustrialType: Structural Engineering+21 more

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Penn Valley Engineering

Philadelphia, PA

Structural Engineering & Consultants

WebsitePhone1 officeUpdated Jun 2026

Service detail: Structural Engineering Evaluations

Service: Structural Engineering EvaluationsService: Structural Framing Investigations and DesignService: Foundation Investigations and DesignIndustry: ResidentialIndustry: CommercialType: Structural Engineering+7 more

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Pennoni

Philadelphia, PA

Partners for What's Possible

Website1 office5 projects6 leaders6 credentials2 publicationsFounded 1966

Project: I-95 Central Access Philadelphia (CAP)

Service: Civil/SiteService: Site Planning & Land DevelopmentService: Permitting & EntitlementIndustry: CommercialIndustry: RetailType: Civil Engineering+136 more

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