Joseph B. Callaghan, Inc. is a structural engineering firm that is driven by the challenges of the built world. We are committed to providing innovative solutions to Clients at every stage of the structure’s life, from the design of new construction to rehabilitating existing facilities. Our staff is involved in all phases. What sets us apart are our established relationships, reliability, and response with our Clients. We are a certified Small Business Enterprise (SBE) in Pennsylvania and New Jersey.


  • 2017 Zweig Group Fast Growth Award
  • 2017 ICRI Award of Merit in the Water Structures category for Carnegie Lake Dam for Princeton University
  • 2017 Preservation Alliance of Greater Philadelphia Grand Jury Award for Renovation of Park Towne Place Museum District Residences
  • 2017 Preservation Alliance of Greater Philadelphia Grand Jury Award for Renovation of Mansion Building at the Academy of Notre Dame de Namur
  • 2017 DVASE Excellence in Engineering Award for Carnegie Lake Dam for Princeton University


  • American Concrete Institute (ACI)
  • American Institute of Steel Construction (AISC)
  • American Society of Civil Engineers (ASCE)
  • Association for Preservation Technology International – Delaware Valley (APTI)
  • Community Design Collaborative (CDC)
  • Delaware Valley of Structural Engineers (DVASE)
  • Healthcare Facilities Management Association of New Jersey (HFMA)
  • Greater Philadelphia Condominium Managers Associations (GPCMA)
  • International Code Council (ICC)
  • International Concrete Repair Institute (ICRI)
  • International Facilities Management Association – New Jersey (IFMA)
  • New Jersey Association of Physical Plant Administrators (NJAPPA)
  • National Council of Structural Engineers Association (NCSEA)

Meet The Team

Allen Roth, PE


Allen Roth, PE joined JBCI as a Project Engineer in 1984 and advanced to Vice President in 1992. In 2015, Mr. Roth assumed the responsibilities of President. His experience includes structural design and analysis of reinforced concrete, structural steel, masonry, and light gauge steel of both new and existing structures. However, his expertise is in the field of building envelope, water abatement and building technology. He has been the Project Manager for design, documentation, and construction administration for the Structural Condition Evaluation and Repair and Building Façade projects.

Joseph Philips, PE

Director of Engineering

Joseph “JP” Philips, PE joined the firm as a Project Engineer in 1993. His professional experience ranges from the design of new structures to the repair and restoration of existing structures. He has been the Project Manager for design, documentation and construction administration on rehabilitation projects, structural and exterior façade investigations, parking garage investigations and forensic studies. Most recently, he was promoted to Director of Engineering in 2011.

Jessica Clifford, PE

Senior Project Manager

Jessica Clifford, PE began her career at Joseph B. Callaghan, Inc. in 2006. Over the past 12 years she has contributed greatly to the JBCI team; specializing in building envelopes, water abatement, building technology and historical preservation. Before she joined the firm, the Cooperative Education Program at Drexel University afforded her the opportunity to work in the City of Philadelphia Capital Program Office, gaining critical knowledge of the City’s processes and procedures. She brings extensive knowledge and professionalism to every client relationship and continues to manage many of the firm’s larger critical projects.

Erik Villari, PE

Senior Project Manager

Erik, Villari, PE, while attending Rowan University, was employed by the Delaware River Bridge Authority preparing finite element analysis on the Betsy Ross Bridge. Upon completing the Masters Program at Penn State he served as a bridge engineer for a consulting engineering firm. Mr. Villari joined our firm in 2006. Since that time he has been performing structural engineering design and assessment services on an array of projects.

Colleen Boulden, EIT

Project Manager

Colleen Boulden, EIT began her career interning with our firm before entering her senior year at the University of Delaware. Upon graduating in 2009, she joined our firm as a Project Engineer. She has experience in façade and building envelope assessment and repair, waterproofing, and concrete repair including balcony and garage repair.

Diane Goschler

Project Manager

Ms. Goschler is JBCI’s Façade Compliance Inspection Division Lead due to her particular expertise in engineering assessments, failure analysis, and historical preservation design. As that Lead, she manages the related condition surveys, due diligence reports, project specifications, and maintenance programs for our façade clients. She also has a deep understanding of waterproofing and concrete and masonry consulting including garage, balcony, and plaza deck repair, masonry facade and historic restorations. Diane serves as a member of our Leadership Team and spearheads JBCI’s business development efforts.

Michael Salera, EIT

Senior Project Engineer

Michael Salera, EIT, upon graduation from Villanova University, joined our firm in 2012.  He has gained extensive experience in the structural analysis and design plus façade assessments.  He has analyzed many building materials including, reinforced concrete, structural steel, limestone, brick masonry, terra cotta and cold form steel.  He has assisted in facade inspections and performing construction administration services on projects.

Ken Destefano, EIT

Project Engineer

Ken Destefano, EIT joins JBCI after completing a Bachelor of Science in Civil Engineering and Masters of Science in Civil Engineering from Johns Hopkins University. He is a familiar face as he was an intern at JBCI for the summer of 2015 and 2016 while completing his degrees. He recently became an Engineer in Training (EIT).


Ken played on the Men’s soccer team for four years at Johns Hopkins and continues to play recreationally in Philadelphia. He completed his first Triathlon last fall and plans to take on another this summer. All at JBCI are looking forward to cheering him on!

Tyler Logar

Staff Engineer

Tyler Logar joins JBCI after completing a Bachelor of Science in Civil ​and Environment ​Engineering at ​Rowan University. ​His studies focused on structural engineering, specifically reinforced concrete, steel design, and earth retaining systems analysis and design. During his time at Rowan, he served as captain of the men’s soccer team for three years. ​

Tyler is an all-around Philly sports fan and he enjoys spending time with family and friends to watch the games. GO EAGLES! ​Camping and traveling both nationally and internationally are also hobbies when he isn’t working.​ He’s taking suggestions for his next trip. ​

Tina Brooks

Executive Assistant

John McCardell, Jr

John joined the firm in 2016 as JBCI’s newest Controller. He has extensive experience in payroll, financial metrics, reporting, and forecasting and plays an integral roll in formulating data and reports used for strategic decision-making. He received his Bachelors of Science in Accounting and currently working towards an MBA at Temple University. Originally from Southern New Jersey, John lives in Brewerytown with his wife & 2 dogs (Leo & Lucy) and on occasion serves as a wedding DJ at some of the City’s premier venues.