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Board of Directors


Christopher Holliday, PE

Chris is a Senior Vice President and manages the National Vehicle Engineering practice for STV Incorporated. Chris serves as the office manager for STV’s Philadelphia office, home to 85 engineering professionals.

Chris has a passion for the role that engineers serve in society and has been working to improve human mobility throughout his career.

With 30 years of engineering experience, Chris is a licensed Mechanical Engineer in Pennsylvania. Chris is a member of the American Passenger Transportation Association (APTA), the American Society of Mechanical Engineers (ASME), Women’s Transportation Seminar (WTS), the National Society of Professional Engineers (NSPE) and the Pennsylvania Society of Professional Engineers (PSPE). Chris has been a member of the Engineers Club of Philadelphia since 2006 and has been a member of the Engineers Club Board since 2012. Chris was appointed to a two year term as President of the Engineers Club in 2018.

A graduate of Lehigh University, Chris is a lifelong resident of the Delaware Valley and a pilot since the age of 14, Chris’s hobby activities also include automotive club participation, extending the “planes, trains and automobiles” approach that he takes in life. Chris is married to his college sweetheart, Valerie Holliday, a Professional Geologist and they have two grown children, Hannah and Zach.



Christopher J. Menna, PE

Chris is a registered Professional Engineer in Pennsylvania and New Jersey and Adjunct Professor of Architecture, Design, and Construction at the Community College of Philadelphia, where he teaches undergraduate and certificate construction management and technology courses. He has over 17 years of heavy civil design and construction experience, mostly with bridges. For the past 14 years, Chris has been employed by the City of Philadelphia, Department of Streets, Bridge Section. He currently serves as Engineer of Design – one of the Assistants to the Chief Bridge Engineer. In this position, he manages the in-house design capabilities of the unit and is responsible to produce complete plans, specification, and estimate packages for all City owned bridges. In addition, he oversees the bridge rating program for some 160 structures, as well as managing the oversize/overweight hauling permit program for the City. In addition, Chris has also operated his own part-time consulting business, Menna Engineers and Associates, since 2002.

Chris has been very active in the Delaware Valley Engineering Community for well over 15 years. He has been heavily involved with Philadelphia ASCE and has held positions of YMF President and Section President. He currently serves as a Region 2 Governor. Chris has been on the Board of the Engineers’ Club for nine years. Chris’ interests have primarily been Engineers Week events, Engineers Week Banners, Science Fairs, Future City, and other service events. He is a 2002 Mulford-Neal-Payne (now the Walter G. Neal Memorial) Scholarship recipient and the 2003 Delaware Valley Engineer of the Year.

Chris obtained a MS in Civil Engineering from Villanova University in December 1999. He also earned an AS in Civil Engineering Technology from Spring Garden College in December 1991 as well as a BS in Civil Engineering from Temple University in May 1994. Chris lives with his wife Felicia, daughter Emilia, and son Christopher, Jr. in the Roxborough Section of Philadelphia. His wife Felicia is a homemaker and part-time teacher. While many of Chris’ immediate family are mechanically inclined and have worked in the automotive and machining trades, he is the first engineer in his family.

Immediate Past President

Michael Griffin, PE

Michael V. Griffin, PE, a 36 year veteran of Hill International, Inc., provides corporate oversight of all aspects of Hill's U.S. and Latin American offices, staff, clients, and projects, providing leadership from business development, client relations and project execution through project completion and close-out.  Mike has more than 40 years of construction industry experience and has conducted seminars for owners and contractors, speaking on a wide range of contract administration and construction claims topics, and has testified as an expert at trial.  He has helped to deliver a variety of technically complex facilities and projects, and has proven expertise in the planning, design, and construction of major buildings, transportation and heavy civil construction projects.  Highlights of his assignments include the Comcast Center, the Pennsylvania Convention Center, various public buildings, K-12, and higher education projects, and numerous transportation projects for such notable clients as the Pennsylvania Department of Transportation, the New Jersey Turnpike Authority, the City of Philadelphia, the Delaware River Joint Toll Bridge Commission, New Jersey Transit, and the Federal Transportation Administration.  Mike's responsibilities have included hands-on project direction, analysis of project objectives, development of project execution plans and procedures, quality control, project execution within budget and schedule, maintaining performance of project teams, and project reporting.   

Mike earned Bachelors and Masters of Civil Engineering degrees from Villanova University, and an MBA from LaSalle University.  He is a licensed Professional Engineer in the states of Maryland,  New Jersey, New York, and Pennsylvania.

Mike is an active member of the Engineers' Club of Philadelphia having recently completed a two year term as President.  He is also involved with the Construction Management Association of America where he has served on the National Board of Directors for six years and as a past President and board member of the Mid-Atlantic Chapter, the American Society of Civil Engineers, and the Womens' Transportation Seminar.

Mike is married and the proud father of three daughters and has one granddaughter.  

Vice President


Kevin Brown, EIT

Kevin Brown is a Site Construction Manager for Vaughan Buckley Construction where he’s responsible for the management and coordination of site excavation, foundation installation, and stormwater management implementation for modular building construction in and around the Philadelphia area. He previously worked for Urban Engineers where he recently served as an Assistant Resident Engineer on the $119 Million I-95/PA Turnpike Interchange Project in Bristol, PA. Kevin received his Bachelors and Master’s degree in civil engineering from Widener University in 2009 and 2014 respectively. Mr. Brown currently chairs the Club’s Committee on Younger Members and organizes the Annual Engineers’ Night with the 76ers. In addition to his involvement with the Engineers’ Club, he’s heavily involved in the American Society of Civil Engineers (ASCE), where he’s the currently the second Past-President of the local Younger Member Forum, and the ACE Mentor Program where he serves as a Board Member and mentor. He also is a member of the National Society of Black Engineers and the Construction Management Association of America.


Carol Rose, PMP

Carol is a Senior Associate at STV Incorporated. She is a project manager with over 20 years of experience managing and reviewing rail vehicle procurement, overhaul, and quality upgrade programs. Her expertise encompasses project management and engineering support for the full lifecycle of a project, from project feasibility, specification development and procurement support through engineering design review, inspection, testing, commissioning, and warranty support. She joined the Engineers’ Club of Philadelphia to network with colleagues in the industry and has been a member of the Board since 2014.

Carol, a native Philadelphian, graduated from Drexel University with a Bachelor of Science in Electrical Engineering. Carol is active in her community, currently serving as Vice Chair of the Women’s Transportation Seminar (WTS) Northeast Region Council, member of the WTS International Advisory Board, and Editor-at-Large of The Junior League of Philadelphia, Inc. Carol lives in King of Prussia, PA with her husband and son.


Dennis Wilson, PE

Dennis works for McCormick Taylor as a Transportation Engineer in their Philadelphia headquarters. Dennis has been with McCormick Taylor for 6 years now, and has gained experience in a number of specialized areas. In his time in the Highway Department, Dennis has assisted on projects pertaining to intersection improvement, highway rehabilitation, interchange reconstruction, stormwater management, ADA curb ramp design and inspection, and right-of-way planning. He also has experience with final design, cost estimates, and preparing PS&E submissions for PennDOT. Dennis graduated from the University of Pittsburgh in 2012 with a Bachelor of Science in Civil and Environmental Engineering. During his time at Pitt, Dennis participated on the club ice hockey team, and completed his senior design project in the rain forest of Ecuador.

Dennis has been involved with the Engineers’ Club of Philadelphia for about 3 years now, mostly through his participation in the Committee on Younger Members before accepting the role of Secretary in June of 2018. In addition to his involvement with the Club, Dennis is also on the ASCE Philadelphia YMF Board, serving as the Information Technology Chair for the second year. In his spare time, Dennis enjoys traveling, playing sports (ice hockey, golf, softball), and checking out new bars and restaurants with friends.


Catherine Martsolf

Coming from Temple University, Catherine Martsolf, EIT, LEED Green Associate is a dedicated member of Engineers’ Club of Philadelphia! Catherine holds a B.S. in Environmental Engineering and specializes in hazardous waste and site remediation. She serves on the Board of Directors and supports the Club in both K-12 outreach and professional development initiatives. Among other activities, Catherine serves on the board of the Philadelphia section of Society of Women Engineers (SWE). At the society level, Catherine serves on two committees in SWE and the Local Activities Council for the Environmental and Water Resources Institute (EWRI). In her spare time, Catherine volunteers for her local Girl Scouts troop, the environmental ethics committee in her local borough, and other Philadelphia engineering societies!

Fun Fact: She has ran 9 half marathons!

Vince DeFlavia

Vince DeFlavia is currently the Sales Director on the North American Project Delivery Team and Bentley Systems. In this role, Vince manages a team of six (6) account managers who are responsible for 350+ accounts totaling over $23M in Annual Revenue to Bentley. Previously at Bentley, Vince was a Sales Director on the Product Advancement Team - Design Modeling Solutions in North America.

Bentley Systems, Inc. is headquartered in Exton, PA, 25 miles west of Philadelphia, and is an international software and services provider for the advancement of all types of infrastructure. Working for Bentley Systems now for seven (7) years as of October 2018, Vince is proud to work for a company that supports the world’s infrastructure community with powerful and dynamic software solutions and services. Specifically, Vince has continued to work with the transportation sector within his current role and enjoys being able to assist and support those planners, engineers, designers, & specialists that are looking for new and innovative ways to improve their current workflows and deliver intelligent models, design files, and supporting documents to their clients. Prior to joining Bentley Systems,

Vince spent twelve years as a Project Manager and Principal at Traffic Planning and Design, a full-service engineering firm headquartered in Pottstown, PA (1999-2011). In addition, Vince was employed as a Construction Engineer with the City of Philadelphia Streets Department, Traffic Engineering Division, upon graduating from Villanova in 1995. Vince has a B.S. degree in Civil Engineering and a M.S. degree in Transportation Engineering, both from Villanova University. Vince served on both the MASITE and Mid-Colonial District Boards for the Institute of Transportation Engineers and now continues to serve as the Villanova University Student Chapter liaison for ITE and on the Board of Directors with the Engineers Club of Philadelphia since 2017.

Vince has been married just shy of 18 years, resides in Collegeville with his wife and two teenage daughters, enjoys coaching, playing and watching sports, working out at the gym or on a nice run, and time at the beach.

Mary Pat Tumelty, PE

Mary Pat (MP) Tumelty, PE is a Staff Engineer at Pennoni’s headquarters in Philadelphia in their Transportation Division.  With nearly 10 years of experience she primarily designs a variety of highway, utility, and green street infrastructure projects throughout Philadelphia and Southeast PA. She attended Drexel University where she obtained her Bachelor’s degree in Civil Engineering with a focus on water resources. 

Mary Pat is a third generational member of the Engineer’s Club of Philadelphia.  MP joined ECP in high school and is proud to continue the tradition that started with her maternal grandfather, Stanley Duckworth, and continued by her mother, Denise Duckworth Tumelty, who is purportedly one of the first female club members.  In addition to being on the Engineer’s Club Board, MP is currently on Mount Saint Joseph Academy’s (MSJA) Alumnae Board.  She is an active member of Women’s Transportation Seminar (WTS) serving on their finance and membership committees.  Additionally, she is involved with American Society of Civil Engineers (ASCE), ASCE-Younger Member Forum (YMF), and Green Stormwater Infrastructure (GSI) Partners.  In her free time, she enjoys walks with her dog Ginger, attending concerts, and taking Scenic Byway road trips.


James Porter, Jr.


James B. Porter, Jr. was chief engineer and vice president - Engineering and Operations for DuPont until his retirement. Jim joined the company in 1966 as a chemical engineer in the engineering service division in Newark, Delaware. He left the same year for a tour in the United States Army and returned in April, 1968 as a technical services engineer at the  Chattanooga, Tennessee fibers plant. Over his 40+ year career with DuPont, Jim held more than 20 technical and leadership roles.

Jim has served as chair for the Construction Industry Institute (CII) and he was the 2004 recipient of CII's Carroll H. Dunn Award of Excellence. In 2005 he received the Engineering and Construction Contracting Association Achievement Award and in 2007 he was honored with the Society of Women Engineers Rodney D. Chipp Memorial Award. In 2008 he was the first recipient of FIATECH's "James B. Porter, Jr. Award for Technology Leadership."   He is a member of the National Academy of Construction and was on the Argonne National Laboratory Board of Governors .


Today, Jim is the founder and President of Sustainable Operations Solutions, LLC which provides consulting services to help companies make significant and sustainable improvements in workplace safety, process safety management, capital effectiveness and operations productivity.


Born in Knoxville, Tennessee, he received a Bachelor of Science degree in Chemical Engineering from the University of Tennessee in 1965.


Robert M. Wright, PE

Robert M. Wright serves as a Project Manager at McMahon Associates at the firm’s office in Center City Philadelphia, where he manages traffic and transportation design projects for various private and public clients and serves as an instructor in McMahon’s internal training “university”.  He has been with McMahon since 2017, having served at two other consulting firms in Philadelphia over the past eleven years.  The bulk of his career was in government service, where he held various positions at the City of Philadelphia Department of Streets over a 27-year span, culminating in his appointment as Chief Engineer and Surveyor, the Department’s division head for all transportation design, bridge design and construction, field surveying, and road records.  He was involved in numerous major highway and transportation design projects during his career at Streets, including the completion of the I-95 and I-676 “missing links” in the City.


Bob graduated from the University of Pennsylvania in 1979, where he received his Bachelor of Science degree in Civil and Urban Engineering.  He is a registered professional engineer in four states.  He has been a member of the Club for the past twenty years and has served as Club President (2010-12).  He is also a member of the American Society of Civil Engineers, the American Society of Highway Engineers, the American Public Works Association, the Institute of Transportation Engineers and the Women’s Transportation Seminar.


Bob currently co-chairs the Club’s Delaware Valley Engineers Week Committee and has served in several capacities on this committee since 1997.  He is also President of the Club’s charitable arm, the Philadelphia Engineering Foundation (PEF).


Bob was born and raised in Philadelphia.  In his free time, he enjoys exploring the history of the city and its transportation network (mostly through reading), gardening, tinkering around the house, walking, bowling, an occasional attempt at golf, and following the Phillies, Eagles and Flyers.  He remains a fan of Big Five college basketball, which he has closely followed since he was a child.

E. Mitchell Swann, PE, LEED AP

Mitchell’s career includes the analysis, evaluation and design of complex systems across a wide range of industries and buildings types including commercial, institutional and industrial facilities with a special focus on high-tech and critical facilities.  He has chaired and been an active member of numerous technical committees and been a contributing author and editor for a number of technical publications and journals.

He is a frequent speaker both nationally and internationally and is a listed member of the speakers’ bureau in the Distinguished Lecturer program of ASHRAE.  He is a regular presenter on Green Building and Sustainability issues, Design – Build Project Execution, Integrated Project Delivery and Building Energy Efficiency and has conducted programs in the UAE, India, Pakistan and Vietnam as well as New York, Chicago, Seattle, Washington DC, Pittsburgh and Philadelphia.  He is a contributing author to the ASHRAE “Green Guide – The Design, Construction and Operation of Sustainable Buildings” and co-author of the ASHRAE Survival Guide to Design|Build Project Execution.

Lawrence O. Dibor, PE

Lawrence O. Dibor has over 30 years of experience in the construction industry. He began his technical career as a technologist, working with international construction companies that specialized in both design and construction of buildings, roads, and bridges. In 1979, Mr. Dibor came to the United States where he continued his advancement in the construction industry in Philadelphia where he worked for organizations such as Day & Zimmerman Inc where he designed and managed governmental, industrial, pharmaceutical, transportation, manufacturing, and commercial projects.

For the last sixteen years, Mr. Dibor has been the president of Adcon Consultants Inc, an engineering design and construction management firm based in Philadelphia. At Adcon, he both directs and oversees all operational delivery of small, medium, and large design and construction supervision projects. Adcon clients are public and private; such as city, state, and federal agencies. Adcon has been involved in several transportation projects with different transit authorities throughout the United States. In 2013, Mr. Dibor was recognized and honored for his professional achievements and civic leadership with three citations by the Commonwealth of Pennsylvania, the Mayor of Philadelphia, and the City Council.

Mr. Dibor is a civic leader with a strong background in management and community work. He is a member of various professional organizations such as the Union League of Philadelphia; the Order of Engineers; the American Society of Civil Engineers; the Construction Management Association of America; the Construction Specification Institute; American Institute of Architects; the Conference of Minority Transportation Officials; former member of the Mayor’s Advisory Commission in Construction Industry Diversity.

Mr. Dibor authored a mentoring and training program aimed at providing a select group of Philadelphia high school students with training to introduce them to engineering and technical careers in the construction and manufacturing industries.

Mr. Dibor’s technical and professional background began with British education where he earned many diplomas and certificates in advanced and comprehensive education in both planning, design, and construction such as full technological certificates from the City of Guilds of Institute and Licentiates from the Royal Chartered Institute of Building United Kingdom (CIOB). During the time of his European Education, Mr. Dibor became a certified Engineering Technologist and Building Construction Technologist. He earned membership at several prestigious technical and professional organizations in London, furthered his professional education at Spring Garden College in Philadelphia where he earned a Bachelor of Science (honors) and Bachelor of Architecture (professional degree). Mr. Dibor also took business and management courses at the University of Pennsylvania.


Emily Hoffman, PE

Emily is a Manager at McCormick Taylor in Traffic Engineering with more than 10 years of professional experience.   Emily has a demonstrated history of leading projects that span traffic studies, operational and capacity analyses, and the preparation of design plans from preliminary engineering through construction. Her work on traffic studies has included Traffic Impact Study reviews, crash data analyses, data collection programs, pedestrian studies, origin-destination studies, trip distribution and detailed capacity analysis. She has extensive microsimulation modeling experience using Vissim software and is the company’s expert. 

Emily graduated from the University of Delaware with a Bachelor of Science in Civil Engineering. She is a licensed Engineer in Pennsylvania, Ohio and Maryland.

Emily is an active volunteer in the profession. She participates annually in the Futures Cities Competition, recently completed a two-year term as Secretary for the Engineers Club of Philadelphia, is the Outreach Chair for MASITE, and is on the WTS TransportationYOU committee.  Emily resides in Philadelphia with her husband and two daughters.