Cathrina Barros is a Senior Transportation Engineer at the California Department of Transportation (Caltrans) in the Office of Flexible Pavement Materials (OFPM).
The OFPM assists a wide variety of Caltrans staff with materials engineering consultation in all aspects of flexible pavement design, construction, rehabilitation and maintenance. OFPM engineers maintain expertise in the fundamental properties of asphalt concrete as well as the specifications and test methods employed in its use and evaluation.
Barros has been with the Caltrans for over 20 years and has worked in both the geotechnical and materials engineering departments during her tenure. She is a graduate of the University of Illinois at Chicago.
Vijay Chandra is a senior vice president and director of the structures for Parsons Brinckerhoff Americas, Inc., managing over 300 engineers nationwide. He was the chief bridge engineer for the Central Artery/Tunnel Project in Boston, Mass., which is recognized as the largest, most complex and technologically challenging highway project in the history of the United States.
Chandra has served as the chairman of the Precast/Prestressed Concrete Institute Committee on Bridges, a member of the PCI Committee on Transportation and a member of the Post-tensioning Institute Committees on Bridges and Stay Cables. Mr. Chandra is also a member of many national and international organizations.
He has authored many papers and presented them at national and international Conferences. Chandra has over 40 years of experience and is a registered engineer in many states.
George Nagle currently serves as the manager of engineering for Axion International Inc. Nagle earned his degree in mechanical engineering from Rutgers University and is a licensed Professional Engineer.
Nagle has more than 30 years of experience working for several major global companies in positions up through director of engineering, and he has extensive plastics knowledge. He also holds multiple patents for several new product technologies.
As the Manager for Transportation Structures for the Portland Cement Association (PCA), Susan N. Lane, P.E., consults with engineers, contractors and owners on concrete use and is responsible for conducting seminars and publishing materials on the design of concrete bridges and transportation structures.
Prior to joining PCA, Lane was the manager of codes and standards for the American Society of Civil Engineers (ASCE) where she was the lead person for the first ASCE/SEI Bridge Performance Workshop. Additionally, Lane initiated and served on the AASHTO-ASCE/SEI Joint Ad Hoc Group for Bridge Inspection, Rating, Repair and Replacements.
Lane also worked for the U.S. Department of Transportation’s Federal Highway Administratio) for 12 years as a research structural engineer and team leader, specializing in concrete bridges and high-performance materials for bridges. Lane is a member of the American Society of Civil Engineers, the American Concrete Institute, and the Precast/Prestressed Concrete Institute.
She received Bachelor of Science and Master of Science degrees in civil engineering from The Pennsylvania State University, and is a licensed professional engineer in Virginia.
Sam Tyson is a concrete pavement engineer in U.S. Department of Transportation’s Federal Highway Administration's Infrastructure Office of Pavement Technology, located in Washington, D.C. He is a registered professional engineer in the District of Columbia, and a graduate of the University of Virginia, where he earned both Bachelor of Engineering and Master of Science degrees in civil engineering.
Tyson served on active duty as a commissioned officer in the U.S. Army Corps of Engineers and was a research engineer with the Virginia Transportation Research Council.
In the private sector, Tyson served as the director of technical services for ready-mixed concrete companies operating in the District of Columbia and Northern Virginia. Prior to joining FHWA, he was the executive director of a national trade association based in the Washington, D.C., area.
Craig Dashner manages the Structural Design Group for OHM (Orchard, Hiltz & McCliment, Inc.), an engineering advisory firm. He is focused on bridge engineering, ranging from miscellaneous structure design, to new and rehabilitated freeway bridges, to new railroad bridges. Dashner also has significant experience with bridge inspections and bridge scoping. His reputation for sound analysis and cost-efficient repair recommendations has led to scoping more than half of all Department of Transportation bridges in the region.
Dashner’s design experience is complimented by experience gained working for contractors designing temporary works. Optimizing design of steel sheet piling walls for stability and retention of soils and balancing hydraulic pressure are areas of expertise sought by the industry.
A licensed professional engineer, Dashner earned a bachelor's degree in Civil Engineering from Michigan State University. A thought leader in emergency response practices, Dashner serves on the National Council of Structural Engineers Association (NCSEA) Structural Engineers Emergency Response Committee, and the Michigan Urban Search and Rescue Team.
Daniel Frondorf, CPE is the Principal Chief Estimator of Cincinnati-based construction estimating consulting firm DG Frondorf and Associates LLC (DGFA). Dan has been reviewing and utilizing the information taken off plans and specifications since 1989, beginning his career as a Zoning Plans Examiner for the City of Cincinnati, and then moving on as an Estimator for roadway contractors before establishing DGFA in 1999. Focusing his practice in all areas of sitework construction, Frondorf and DGFA serve general contractors, subcontractors, design professionals, construction managers, developers and owners by providing accurate, project-specific information used in the preparation of everything from budgets to bids to claims and change orders. He is a Certified Professional Estimator member of the American Society of Professional Estimators (ASPE) and sits on ASPE’s Board of Trustees for the 2009-2011 term, serving as Governor of the Central Plains Region (U.S. Midwest). Frondorf can be contacted through DGFA’s website www.dgfrondorf.com.
Doug Carlson has 11 years of experience working within the rubberized asphalt industry, and has conducted over 90 conferences, workshops, seminars and technology tours in Arizona, California, Texas and worldwide.
Carlson has held or maintained the following positions: Executive Director, Rubber Pavements Association, February 2003-present, Director, Recycled Tire Engineering and Research Foundation, November 2003-present, FHWA Quiet Pavement Technology European Scan Team Member, 2004, Member, U.S. Quiet Pavements Expert Task Group, 2004-present, Member, Transportation Research Board 2004-present, Member, ASTM, 1999-present, Member, Caltrans Rubberized Asphalt Concrete Task Group, March 1998-present (Co-Chairman of the RAC, Special Provision Performance Grade Binder Update 2005), Member, U.S. EPA Resource Conservation Challenge, Tire Cluster, Rubber Modified Asphalt Subcommittee, May 2002-present.
He is currently working to develop rubberized asphalt markets for Liberty Tire.
Colin Makin, P.E.. is a civil engineer and a graduate of Salford University in the United Kingdom. Makin has worked in Europe, the Middle East and North America. For most of his professional life, he has worked as a contractor specializing in the design and building of major complex bridges. His projects include a 1.25-mile-long pre-cast segmental bridge in Hawaii and a 7.8-mile-long marine bridge off the east coast of Canada.
Makin worked as resident engineer on the Des Plaines River Valley Bridge. The project involved the production of contract documents that would allow the bidding of the two original designs as well as a performance based alternate. He is currently working on instituting a larger design/build program and involved with P3 projects for GDOT in HNTB’s Atlanta office.
As Vice President of InspectTech in Pittsburgh, PA, Jeremy Shaffer, Ph.D., oversees its bridge inspection and management software program. He has been directly involved in the successful planning, design and delivery of over 50 inspection and management systems covering tens of thousands of bridges in all service areas: federal, state, city, county, transit and consultant. Shaffer has a Ph.D. and Master of Science in Electrical and Computer Engineering from Carnegie Mellon University and a Bachelor of Science in Engineering from Tulane University. He is an active member of a number of professional organizations, including the Transportation Research Board’s Bridge Management Committee, a board member of Association for Bridge Construction and Design (Pittsburgh), and County Engineers Association of Maryland.
John J. Meola, CSP, ARM is the safety manager for Transfield Services North America, Transportation Infrastructure, based in Richmond, VA. A published author and nationally recognized safety expert and cheerleader, Meola has extensive experience in developing and implementing customized and relevant safety programs for clients across North America.
Meola presents technical safety topics in an energetic format, intended to engage audiences in the mechanics of building a successful organizational safety culture. The Transfield Services corporate values structure places employee safety foremost in all operational aspects. We welcome the opportunity to share safety knowledge with industry associates in the interests of achieving our stated goal of "Zero Harm – No Injury to Any Person at Any Time."
Becky McDaniel is technical director of the North Central Superpave Center where she works with agencies and industry in this region and beyond on issues related to hot mix asphalt. Her responsibilities include research, technology transfer, training, and materials testing. McDaniel holds bachelor's, master's and doctoral degrees in Civil Engineering from Purdue University and a bachelor's degree in English from Indiana University.
She is a registered professional engineer in Indiana and a member of numerous professional organizations and committees, including the Transportation Research Board and Board of Directors of the Association of Asphalt Paving Technologists.
Mark E. Williams, Ph.D., P.E., S.E. is a Senior Associate in the Structural Diagnostics Services Group in Walter P. Moore and Associates. Williams has more than 10 years of progressive experience in highway bridge analysis and design, software development, rehabilitation, restoration, forensic investigation, and peer review projects with a particular emphasis on bridge deterioration. Williams is a graduate of the University of Central Florida (B.S.C.E., M.S.C.E.) and the University of Florida (Ph.D.). He is a registered professional engineer in eight states and an active member in professional organizations, including the American Society of Civil Engineers (ASCE) and the American Concrete Institute (ACI) Committee 345 on Concrete Bridge Construction, Maintenance and Repair.
Kathryn A. Zimmerman has earned a national reputation for her work in pavement management and the use of management systems to improve decisions in transportation agencies. While working for the U.S. Army Corps of Engineers from 1985 to 1987, she was the Associate Investigator on the development of the MicroPAVER pavement management system (PMS). In 1987, Zimmerman joined the staff of ERES Consultants, Inc., where she was president of the company for three years before founding Applied Pavement Technology, Inc. (APTech).
Throughout her career, Zimmerman has assisted with the implementation of pavement management, pavement design and pavement preservation practices in a number of organizations throughout the United States, including State highway agencies, departments of transportation (DOTs), cities, airports, federal agencies, private companies, and various associations. Her work has included the development of guidelines for the implementation of the new Mechanistic-Empirical Pavement Design Guide (MEPDG) developed through the NCHRP. She is currently working with the Federal Highway Administration (FHWA) to develop guidelines for the use of pavement management data to calibrate the MEPDG performance models.
Zimmerman received both her Bachelor of Science and Master of Science degrees in Civil Engineering from the University of Illinois. She is a licensed engineer in 30 states.
Wayne Seiler has 30 years of professional experience in airport engineering, including 13 years as a commissioned officer in the United States Air Force. Currently, Dr. Seiler is president and a principal of All-About Pavements, Inc. (API) and oversees the firmfs Midwest office. He is a registered professional engineer in Virginia, Illinois, Minnesota and Florida. His engineering responsibilities include pavement management, evaluation and design of airport pavements. He has also conducted numerous forensic analyses for pavements that have failed during, or shortly after, construction.
Dr. Seiler obtained his BSCE from the U.S. Air Force Academy and Masters and Doctoral degrees in civil engineering from the University of Illinois. He is a past chair of the American Society of Civil Engineers' (ASCE) airfield pavement committee and previously served as chair of the Airport Consultants Council's (ACC) engineering technical committee.
Michael E. Ayers, Ph.D., is the Director of Education for Design and Construction for the American Concrete Pavement Association (ACPA) in Skokie, Ill.
He manages the ACPA's education and training program, and provides extensive technical and troubleshooting support to contractors and other members of the association.
Dr. Ayers is considered an expert on mechanistic-empirical design of pavement, and has both lectured and written extensively on the topic.
Prior to joining ACPA in November 2001, he served as Director of Technology Transfer, and previously held positions as Division Manager – Research and Technology Transfer and Senior Engineer, all with ERES Consultants, (now Applied Research Associates, Inc..
Dr. Ayers holds a Ph.D. in Civil Engineering (Transportation/Materials); an M.S., in Civil Engineering (Materials Specialization); and a B.S., Civil Engineering (Construction Management), all from the University of Illinois, Champaign, Ill.
Tom Luby graduated from Auburn University in Mechanical Engineering and has worked in the industrial service and construction business for 30 years. He received his Professional Engineers license in Ohio and an MBA from Case Western Reserve University. He has been with Engius for eight years as Vice President of Sales. Luby works with customers in highway, bridges, wastewater, utility, commercial, precast, ready-mix and any concrete construction.
Engius has developed the IntelliRock system as a concrete maturity and temperature profiling system that helps complete construction projects more efficiently by providing real-time concrete strength and temperature data. Since the introduction of the IntelliRock system in 2002, over 46 departments of transportation have approved the system. The effectiveness of the IntelliRock system has been proven on all types of projects, in all types of weather conditions on projects across the country.
Since 1991, David E. Fosbroke has been a health statistician with NIOSH in the Division of Safety, Research, Surveillance and Field Investigations branch in Morgantown, W. Va.
Early in his career, Fosbroke’s injury surveillance research focused on the analysis of fatal and nonfatal injuries among workers in the U.S. construction industry. Currently, Fosbroke’s research activity involves extensive outreach to the construction industry, observation of industry practices during visits to construction operations and collaboration with a variety of stakeholders in the construction industry to identify the industry’s research needs. Fosbroke is a strong proponent of recent efforts in NIOSH to expand research on the effectiveness of safety and health interventions and moving research results into practice.
Fosbroke has worked with the National Safety Council and ARTBA to develop the OSHA 10-hour course that focuses on road construction. He is the NIOSH representative to the Roadway Work Zone Safety and Health Partners Alliance, and the Transportation Research Board’s Committee on Work Zone Traffic Control and Joint Committee on Positive Protection in Work Zones. He is also a member of the Strategic Highway Research Program (SHRP2) Renewal Technical Expert Task Group on Identifying and Reducing Worker, Inspector, and Manager Fatigue in Rapid Renewal Environments.
As Enerpac Americas Integrated Solutions Engineering & Operations Leader, Tom Eggert leads a team that is responsible for developing specialized integrated hydraulic systems to meet the needs of civil engineering projects.
Tom received his bachelor's degree in Mechanical Engineering from the Milwaukee School of Engineering and his master's degree in Business Administration from Cardinal Stritch University. He has been involved with several notable projects during his 13 years with Enerpac. These projects include lowering of the false work for the Galena Creek Bridge in Reno, Nev., and most recently, several heavy lifting operations to construct the superstructure of the new San Francisco-Oakland Bay Bridge.
Dr. Michael Thomas is currently a professor in the Department of Civil Engineering at the University of New Brunswick (UNB) and a registered Professional Engineer in that province. He is also the President of C&CS Atlantic Inc., providing consulting services in the area of concrete materials, durability and rehabilitation, and expert testimony for litigation.
Dr. Thomas has been working within the field of cement and concrete research since 1983. Prior to joining UNB in 2002, he served on the faculty at the University of Toronto. He was also a concrete materials engineer with Ontario Hydro in Canada and a research fellow with the Building Establishment in the U.K.
Dr. Thomas has authored more than 200 technical papers and reports, and is a co-author of the service-life model, Life-365.
In 2005, Dr. Thomas and Dr. Kevin Folliard of the University of Texas in Austin formed School of Concrete Inc. to provide training courses, educational seminars and workshops for industry, government and academia. Dr. Thomas currently serves on technical committees within the American Concrete Institute (ACI), ASTM, RILEM, and the Canadian Standards Association. He was a recipient of the ACI’s Wason Medal for Materials Research in 1997 and 2009, the ACI Construction Practice Award in 2001 and was elected to a Fellow of the Institute in 2006.
Theodore P. Zoli, P.E., an HNTB vice president, serves as the technical director of HNTB’s bridge practice nationwide. During his 17 years with HNTB, Zoli has led the preliminary and final design of numerous challenging and award-winning bridge projects.
As the leader of HNTB’s infrastructure security practice, Zoli has developed innovative protective measures for some of our nation’s largest and most important bridges.
Zoli has published and presented numerous technical articles. He serves as an adjunct professor of graduate studies in civil engineering at Columbia University, where he is engaged in research on the effects of fire on bridges as well as the design of long span bridges to resist progressive collapse. He is also a visiting lecturer at Princeton University’s Department of Civil Engineering. Zoli is a member of the International Association for Bridge and Structural Engineering.
He received a bachelor’s degree in civil engineering from Princeton University and a master’s degree in civil engineering from the California Institute of Technology.
Zoli was one of 24 fellows to receive a “genius grant” from the John D. and Catherine T. MacArthur Foundation in September 2009. This prestigious award was granted for major technological advances to protect transportation infrastructure when there is a disaster.
During his 15-year career in structural engineering, John Milius, P.E. has gained experience in the analysis and design of a wide range of complex highway and rail structures, and the inspection and rating of complex bridges. He also has led some of AECOM’s high-profile bridge rehabilitation and new bridge design projects. Milius has worked at AECOM for the past 13 years, and currently serves as the Deputy Structures Department Manager in the Philadelphia office.
Milius obtained his B.S. in Civil Engineering from Bucknell University and a M.E. (Civil) in Structural Engineering from Cornell University. Currently, he is working on his M.B.A. at Villanova University and anticipates graduation in fall 2010. Milius is also a member of the American Society of Civil Engineers (ASCE) and American Society for Healthcare Engineering (ASHE).
Gary Fitts is a pavement engineer with Shell Oil Products, USA. His primary responsibility is to work with agencies and industry in North America to facilitate market development for Shell Thiopave™, a sulphur-based asphalt binder extender and warm-mix asphalt technology.
Fitts worked for 17 years as a regional engineer for the Asphalt Institute. In this role, he provided technical service to the asphalt paving industry that included project-level design, materials and construction advice, and specification development assistance. He has taught courses and spoken publicly at hundreds of venues throughout the Americas.
Fitts received his Bachelor of Science in Civil Engineering in 1980 and an Master of Science in Engineering in 1985, both from the University of Texas at Austin. He is a registered Professional Engineer in Texas.
Nelson E. Canjura, P.E., the Florida Structures Manager for HDR, will talk
about how the Belleair Causeway project was executed.
Canjura is a graduate of Columbia University, NY (Bachelor of Science, 1984) and University of
Texas at Austin (Master of Science, 1988) in Civil Engineering. He has more than 25 years of
experience in Transportation/Structures design. He is currently employed
with HDR in Tampa, Florida.