The structural engineering industry in Pennsylvania comprises several distinguished companies that offer a wide array of specialized services. These companies play critical roles in the planning, design, construction, and maintenance of building infrastructures, bridges, and other structural projects. Their expertise encompasses various disciplines such as environmental compliance, geotechnical engineering, stormwater management, and transportation infrastructure. As sustainability and innovation become increasingly important, these firms are strategically positioning themselves to meet environmental regulation challenges, create sustainable designs, reduce emissions, and incorporate advanced technology into their solutions. This dynamic industry is positioned for a future that appreciates the blend of innovation, sustainability, and cost-effectiveness.


Top 24 structural engineering companies in Pennsylvania

1. Rettew

  • Website: rettew.com
  • Headquarters: Lancaster, Pennsylvania, United States
  • Headcount: 201-500
  • LinkedIn

RETTEW is a professional services company that specializes in project development and design-build solutions for various industries. They offer expertise in areas such as bridges and structures, environmental compliance, geotechnical engineering, and stormwater management.


2. Bala Consulting Engineers

  • Website: bala.com
  • Headquarters: King Of Prussia, Pennsylvania, United States
  • Founded: 1982
  • Headcount: 51-200
  • LinkedIn

Bala is a consulting engineering company that specializes in delivering sustainable designs for buildings. They provide services in the areas of mechanical, electrical, and structural engineering, as well as technology commissioning. With a focus on sustainability, Bala helps clients meet regulations and reduce emissions while balancing functional design and cost challenges.


3. SAI Consulting Engineers, Inc.

  • Website: saiengr.com
  • Headquarters: Pittsburgh, Pennsylvania, United States
  • Founded: 1964
  • Headcount: 51-200
  • LinkedIn

SAI Consulting Engineers is a transportation-focused civil engineering and construction management firm offering bridge and highway design, structural inspection, traffic engineering, design management, and construction management and inspection services. With nearly 60 years of experience, SAI provides innovative and reliable engineering services to government and private sector clients.


4. O'Donnell & Naccarato

  • Website: o-n.com
  • Headquarters: Philadelphia, Pennsylvania, United States
  • Founded: 1954
  • Headcount: 51-200
  • LinkedIn

O’Donnell & Naccarato is a consulting structural engineering firm that operates nationally, providing in-depth analysis and support for the entire building lifecycle. With a focus on creative structural engineering, the company aims to enhance each building’s unique architectural expression and purpose.


5. Robert E. Lamb, Inc.

  • Website: relamb.com
  • Headquarters: Norristown, Pennsylvania, United States
  • Founded: 1917
  • Headcount: 51-200
  • LinkedIn

Relamb.com is a company that provides a range of planning, design, and engineering services for various industries. They specialize in industrial facilities, control centers, data centers, and nuclear emergency response facilities. With a focus on architecture and engineering, they offer expertise in areas such as civil, structural, mechanical, and electrical engineering.


6. CJL Engineering

CJL Engineering is a full-service engineering company offering a wide range of innovative solutions to clients in various industries. With over 140 professionals, CJL specializes in mechanical, electrical, plumbing, fire protection, commissioning, and structural engineering.


7. C.S. Davidson, Inc.

C.S. Davidson is a civil engineering firm that partners with local municipalities to improve communities. Their services include municipal engineering, stormwater management, water and wastewater solutions, parks and recreation development, transportation planning, and structural engineering for industrial buildings and bridges.


8. Gibson-Thomas Engineering

Gibson-Thomas is a multi-discipline consulting engineering firm that provides a variety of services including water/wastewater services, municipal services, structural engineering, transportation services, construction services, surveying services, and more. With over 100 years of quality engineering experience, they are committed to total client satisfaction.


9. Stahl Sheaffer Engineering

Stahl Sheaffer Engineering provides multi-discipline civil engineering services to public and private clients in multiple industries. Their services include building structural engineering, bridge design and inspection, construction inspection, geotechnical engineering, land development, survey and reality capture, and transportation engineering.


10. Carroll Engineering Corporation

Carroll Engineering Corporation is a consulting engineering, planning, and surveying firm. With a team of professionals and staff in Southeastern Pennsylvania and Central New Jersey, they provide a wide range of services including wastewater engineering, water facilities engineering, municipal engineering, planning & site design, traffic & transportation engineering, structural engineering, environmental engineering, construction administration & observation, surveying, and GIS & IT.


11. Gateway Engineers

Gateway Engineers is a full-service civil engineering firm that provides comprehensive solutions for various projects. With expertise in asset management, environmental services, geotechnical analysis, land development, municipal planning, structural engineering, surveying, and transportation, Gateway Engineers offers end-to-end project design and management. Their experienced leaders customize cost-effective strategies to meet client needs.


12. Systems Design Engineering, Inc.

  • Website: sdei.net
  • Headquarters: Leesport, Pennsylvania, United States
  • Founded: 1988
  • Headcount: 11-50
  • LinkedIn

SDEI.net is a company specializing in building systems engineering, water and wastewater engineering, and medical facility design. They offer a range of services including land development, civil engineering, construction services, structural engineering, environmental engineering, and more.


13. Keast & Hood

  • Website: keasthood.com
  • Headquarters: Philadelphia, Pennsylvania, United States
  • Founded: 1953
  • Headcount: 11-50
  • LinkedIn

Keast & Hood is a structural engineering company based in Philadelphia, PA. With over 65 years of experience, they offer innovative design solutions and exceptional service to their clients. They specialize in preserving historic structures, collaborating creatively, and providing structural solutions for various projects.


14. Mainstay Engineering Group

  • Website: megr.com
  • Headquarters: Blue Bell, Pennsylvania, United States
  • Founded: 2002
  • Headcount: 11-50
  • LinkedIn

Mainstay Engineering Group, Inc. is a leading provider of structural engineering, civil engineering, and facility solutions. With offices in Blue Bell, PA, Cherry Hill, NJ, and Raleigh, NC, they offer a range of services to clients in various industries.


15. KSE Engineering, P.C.

  • Website: kse-eng.com
  • Headquarters: Quakertown, Pennsylvania, United States
  • Founded: 1999
  • Headcount: 11-50
  • LinkedIn

KSE Engineering is a company specializing in structural engineering and architectural services for residential construction. They deliver exceptional plans and prioritize client needs, ensuring projects are completed smoothly and within budget.


16. Specialty Engineering, Inc.

Specialty Engineering, Inc. is a multi-discipline structural engineering consulting and research firm specializing in Highway and Railroad Bridge Design, Analysis, Rehabilitation, Inspection, and related engineering services.


17. The Harman Group, now IMEG

  • Website: harmangroup.com
  • Headquarters: King Of Prussia, Pennsylvania, United States
  • Founded: 1984
  • Headcount: 11-50
  • LinkedIn

The Harman Group, now IMEG, is a structural engineering firm based in Philadelphia. They provide engineering services for a wide range of building types, including corporate headquarters and residential towers. They also specialize in parking planning and design. With a focus on delivering efficient and cost-effective solutions, they collaborate with architects, developers, and construction teams to engineer structures that meet the client's objectives.


18. BE Structural P.C.

BE Structural is a structural engineering company offering services in design, rehabilitation, repair, and forensic engineering. They specialize in residential and commercial structures, providing high-quality work and efficient service.


19. Structure Labs

Structure Labs, LLC is a full-service structural engineering consulting firm providing top-notch design and support services.


20. KW Engineering

  • Website: kweng.net
  • Headquarters: Airville, Pennsylvania, United States
  • Headcount: 11-50

KW Engineering offers quality structural engineering services that provide a strong foundation for any development project. Their expertise ensures safety and building integrity in an ever-evolving construction industry.


21. D'Huy Engineering, Inc.

  • Website: dhuy.com
  • Headquarters: Bethlehem, Pennsylvania, United States
  • Founded: 1976
  • Headcount: 11-50
  • LinkedIn

D'huy Engineering is a professional services firm that offers a comprehensive range of project and construction management, structural design, and forensic engineering services. They provide support to clients during every phase of a project, with a team of qualified and experienced personnel.


22. WallacePancher Group

WallacePancher Group is an engineering and ecological consulting firm that specializes in bridging the gap between engineering and ecology. They offer services in landscape architecture, civil engineering, environmental planning, and more.


23. Cowan Associates, Inc.

Cowan Associates, Inc. is a full-service civil engineering firm that provides multi-disciplinary engineering and technical services to clients in various industries. With over 50 years of experience, they specialize in land development, building and municipal engineering, construction quality control, exploration, testing & inspection, accident & failure investigation, structural analysis, geotechnical evaluations, environmental audits, and surveying.


24. Joseph B. Callaghan, Inc.

JBCI is a company based in New York, NY that specializes in providing forensic investigations, failure analysis, and prevention recommendations for building envelopes. They have over 30 years of experience and offer technical expertise and support in a clear and definitive style. Their services include building envelope assessment, repair, and rehabilitation, covering all elements such as roofing, facades, foundations, windows, and doors.


Want to find more structural engineering companies?


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