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International Conference on Asphalt and Traffic

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2018 Speakers & Participants

The Honorable Bruce Rauner, Governor, State of Illinois

Bruce Rauner is a businessman and currently serving as the 42nd Governor of Illinois. He attended Dartmouth College and obtained an M.B.A. from Harvard Business School. Rauner returned to Illinois in 1981 and joined the startup investment company Golder, Thoma, Cressey (later GTCR) and helped build it into one of the most successful businesses in Illinois. Rauner is a key supporter of projects such as Chicago's new Red Cross regional headquarters, the YMCA in Little Village, Illinois, charter high schools, and scholarship programs for disadvantaged students.  A self-made businessman, Rauner is truly committed to turning around Illinois.  His vision is to create a more prosperous state where everyone has the opportunity to succeed. 


The Honorable John J. Cullerton, Illinois Senate President

On January 14, 2009, State Senator John Cullerton was inaugurated to his first two-year term as President of the Illinois Senate. Over the past 30 years, he has built a reputation as a lawmaker who takes on some of the state’s toughest problems, finding solutions by negotiating to end gridlock and get Illinois’ business done.  As a lawmaker, Sen. Cullerton was an early national leader on strengthening child safety laws, passing the state’s Child Passenger Safety Act, and Illinois laws requiring that seatbelts be worn by all front seat passengers.  He pushed for increased requirements for young drivers to ensure safer Illinois roads. He worked on the reform bill for the statewide indoor smoking ban that provided guidance to law enforcement to make sure all communities had the ability to ensure compliance.  Senator Cullerton has won numerous prestigious awards.

The Honorable Toni Preckwinkle, Board President, Cook County

Cook County Board President Toni Preckwinkle has been a dedicated leader for over two decades. She has worked with the Board of Commissioners, elected officials and County employees to implement major reform and reshape County government through fiscal responsibility, innovative leadership, transparency and accountability, and improved services. Since taking office in 2010, President Preckwinkle has rebuilt the credibility of County government, solving for more than $1.6 billion in budget deficits. She established the County’s first performance management initiative to demand more accountability from County operations and employees. President Preckwinkle has a broad policy agenda focusing on critical public safety reform, strengthening the County’s health care system, and increasing the capacity and capability of economic development efforts.


Randy Blankenhorn, Secretary, Illinois Department of Transportation

Randall S. Blankenhorn was appointed Illinois Transportation Secretary by Governor Bruce Rauner. As head of the Illinois Department of Transportation, he leads an agency of 13 offices and divisions that serve the transportation needs of Illinois across multiple modes, in rural, suburban and urban environments. At IDOT, Blankenhorn oversees a $2.8 billion operating budget that supports a work force of 5,200 employees, with annual oversight of more than $3.2 billion in capital projects.  Prior to his appointment, Blankenhorn was the executive director of the Chicago Metropolitan Agency for Planning, leading that agency since its inception in 2006. At CMAP, Blankenhorn oversaw transportation, land use, housing, economic development, environmental and other quality-of-life issues in the seven-county region of Northeastern Illinois.


Robert Schillerstrom, Chairman, Illinois Tollway Board

Chairman Bob Schillerstrom is a partner in Ice Miller's Public Affairs Group. He has more than 30 years of experience counseling clients on matters relating to local and state governments, including community relations, public affairs and strategic public policy development, as well as real estate tax appeals issues and zoning related matters. He previously served three terms as chairman of the DuPage County Board. He earned a reputation for reducing property taxes, lowering county property taxes nine out of 12 years and consistently doing more for DuPage County taxpayers with less money. He has been an active figure in DuPage County politics for three decades, regularly holding leadership positions in local and county governments. He earned his bachelor's degree at Illinois College and his law degree at Chicago-Kent College of Law.


Sergio "Satch" Pecori , Incoming National Chairman, ACEC

Mr. Pecori is President and CEO of Hanson Professional Services in Illinois. He is active on the American Council of Engineering Companies (ACEC) Planning Cabinet, International Committee and Design Professionals Coalition. He has served previously on the Executive Committee as Senior Vice Chair & Treasurer. As the fourth president and CEO in Hanson’s 62-year history, with more than 40 years of experience in the engineering industry, Mr. Pecori has a wealth of knowledge designing and managing complex projects throughout the U.S. He also is highly regarded in the technical field, serving as an ambassador for the engineering profession in numerous leadership roles. Mr. Pecori received a bachelor’s degree in civil engineering and a master’s degree in geotechnical engineering from the University of Illinois at Urbana-Champaign.


Daryl Taavola, Vice President, AECOM

As a member of AECOM’s Minneapolis office, Daryl Taavola is the director of the Intelligent Transportation Systems (ITS) and Traffic Engineering Groups. He has more than 33 years’ experience including work in 16 different U.S. states in the areas of ITS, connected/autonomous vehicles, Traffic Management Centers, advanced transportation management systems, and other emerging technologies. Daryl is serving as the Consultant Project Manager on the Minnesota Autonomous Bus Pilot project.


David Stahnke, Vice President, TranSystems Corp.

David Stahnke is a Principal of TranSystems and Senior Project Manager with over 37 years of experience in bridge and highway design and project management. As the manager of major Bridge Design Groups in New England, Mr. Stahnke was responsible for the management and technical execution of bridge projects involving inspection, load ratings condition studies, construction staging analysis, rehabilitation and replacement design. Technical expertise includes the design and rehabilitation of highway, railroad, moveable and pedestrian bridges in urban settings as elements of complex traffic networks.


Michelle Rennie, Director of Major Transport Infrastructure Projects, Transport Scotland

Michelle Rennie is currently the Director of Major Transport Infrastructure Projects for Transport Scotland, the national transport agency for Scotland. She is responsible for the design, development, promotion, procurement and construction of the motorway and trunk road program and the Forth Replacement Crossing project. She has a wide range of experience on infrastructure projects such as the M8, M73, and M74 Motorway Improvements and the Aberdeen Western Peripheral Route projects. She is a chartered civil engineer and graduate of Queens University, Belfast, Scotland.


Wanda Lewis , Emeritus Professor, School of Engineering, University of Warwick, United Kingdom

Having graduated with a civil engineering degree in Poland, Wanda obtained an MSc degree in Foundation Engineering, and a PhD in Structures in the UK. After a short spell in industry (1983-86), she has been working at the University of Warwick, ever since. She is a Chartered Engineer and a Fellow of the Institution of Civil Engineers.  Her 30 years of research experience is reflected in her monograph Tension Structures: Form and Behaviour, numerous research articles, and press releases. She is a pioneer of analytical form-finding methods that predict optimal shapes of building and bridges, as a function of statistically prevalent loads (a feature observed in natural structures). Wanda has led a number of national and European research projects in collaboration with industry, and a multi-disciplinary project in collaboration with the Courtauld Institute of Art, London.


Gregg Teets, Business Development Director, Mammoet, Canada

Mr. Gregg Teets is Business Development Director for Mammoet North America and leads a marketing and sales initiative within the company to promote solution-based opportunities in construction throughout North America. Netherlands-headquartered Mammoet is ranked by industry sources as the world’s largest heavy-lift and specialized-transport company, and operates under the core belief that “the biggest thing we move is time.”
Mr. Teets has more than 30 years of experience in resource extraction & processing, heavy civil & infrastructure construction, and project delivery methods. He has a Bachelor of Science degree in Mining Engineering from the Montana School of Mines and an MBA from Utah State.


Khalid El Zahaby, Chairman, Housing & BUilding National Research Center, Egypt

Prof. ElZahaby is currently the Chairman of the Housing & Building National Research Center (HBRC) subordinate to the Ministry of Housing, Utilities & Urban Communities. He is also the chairman of the Metropolis® regional branch as well the Chairman of Urban Training institute (UTI). He is the Vice-Chairman of the Egyptian Green Building council. He started as a research assistant and progressed to be a professor of geotechnical engineering then Vice Chairman of HBRC before being nominated for the post of the Chairman. He obtained his B.Sc. and M.Sc. from Cairo University, Egypt and his Ph.D. from North Carolina State University, USA. He authored and co-authored 36 research papers published at national and international journals and/or conferences. He chaired several international conferences and presented invited keynote lectures in several countries.


Lars Thorbek, Global Division Director, Ramboll Denmark

Mr. Lars T. Thorbek of Ramboll Denmark engineering consultancy, has more than 20 years’ experience as an engineer and manager. He earned his Bachelor of Science degree in Structural Dynamics from the Engineering Academy of Denmark. His technical background has been focused in structural dynamics and wind engineering, but in the last 15 years, has performed in various management positions including head of Ramboll’s bridge department. Today he is the Global Division Director for Ramboll’s Major Crossings Division. On the Queensferry Crossing Bridge, Mr. Thorbek was design manager for the Design Joint Venture during the tender design period.


Alan Chambers, Principal Operations Manager, Amey Company, United Kingdom

Alan has over 35 years of experience in Highways in the private sector. He started his career in civil engineering construction before moving into highway operations and maintenance. He has a particular interest in winter service including; contracts for service provision, equipment, chemicals, sustainability and winter maintenance decision-making. Alan is part of Amey Highways’ Technical Excellence Team. Amey is UK-based service provider with highway maintenance contracts in the UK and Australia. He is the English-speaking secretary of the WRA-PIARC Technical Committee B.2 Winter Service.


Sallye Perrin, Senior Vice President, WSP

Sallye Perrin is a Senior Vice President at WSP. She serves as the firm’s Strategic Pursuit Manager for the development of public-private partnerships throughout the U.S., with a focus on transportation. Ms. Perrin has over 30 years of planning and engineering experience and is nationally recognized for her ability to help agencies find innovative and cost effective means to implement their transportation programs and projects including public-private partnerships and alternative delivery. Currently Ms. Perrin is part of the team assisting MDOT with the Procurement of the I-75 Segment 3 DBFM. Previously she worked in a similar capacity on the procurement of the $2 B Automated People Mover P3 at LAX Airport.
Ms. Perrin earned a Master of Science degree in civil engineering and a Bachelor of Arts, environmental science at the University of Virginia.


Bobby Hambrick, Founder and CEO, AutonomouStuff

Bobby Hambrick founded AutonomouStuff shortly after the DARPA Urban Challenge to serve the growing interest in automated vehicles in various markets including automotive, mining, military, agriculture, aerospace and academia. Today AutonomouStuff provides autonomous R&D platforms, sensors, engineering services and automated driving software to more than 2000 of the world’s most advanced automated driving teams. Bobby is proudly the man in the middle, enabling the future of transportation for a decade.


Terence Holman, Vice President, Turner Construction Company

Terence Holman, Ph.D., P.E., is a Vice President and the Chief Geotechnical Engineer for the Turner Engineering Group of Turner Construction Company. He possesses more than 20 years of experience and subject matter expertise in geotechnical and geostructural engineering, design, and heavy-civil construction. Terence experience in consulting and as a specialty geotechnical contractor includes engineering and construction of shallow and deep foundations for sports stadiums, airports, large bridge projects, entertainment facilities, commercial, industrial, and power plant structures; deep excavations in soft ground; ground improvement; high seismic hazard areas; CQA-CQC; and construction management.


Imad Al-Qadi, Founder Professor, ICT, University of Illinois at Urbana-Champaign

Professor Al-Qadi, a registered professional engineer, is the Founder Professor of Engineering at the University of Illinois at Urbana-Champaign. He is also the Director of the Advanced Transportation Research and Engineering Laboratory (ATREL) and the founding Director of the Illinois Center for Transportation (ICT). Prior to that, he was the Charles E. Via, Jr. Professor at Virginia Tech. Professor Al-Qadi has authored/ coauthored more than 550 publications and has delivered more than 500 presentations including numerous keynote lectures. His work has resulted in developing new pavement modeling methods, techniques and testing standards. He organized and chaired many international conferences and technical committees in his profession.

Dan Meckes, CEO, Crawford, Murphy & Tilly

Mr. Meckes became the 5th president to serve in the firm's history in 2007. Since the firm's beginnings in 1946, CMT has enjoyed steady and healthy growth. Geographic expansion, historically the result of growing and promoting their own, has more recently been complemented by strategic acquisitions of firms that share CMT's values and reputation for integrity. The firm, with its 260 employees located in 9 offices through the Midwest, continues to evolve based on the principles of hard work and steady growth instilled by its founders. CMT and its fourth generation of leadership are positioned to address the opportunities and challenges through a strong strategic vision and continued commitment to its clients.


Marwan Madi, Principal Partner, CDM Smith

Marwan Madi is currently is a Principal Partner at CDM Smith leading the firm’s national transportation practice on emerging technologies, smart cities, and Intelligent Transportation Systems (ITS). His work focuses on the planning, design, testing, evaluation, and deployment of technology and includes developing relationships to facilitate the deployment of automated and connected vehicle technologies. He brings over 17 years of professional experience in business development and management consulting with a focus on the transportation industry. His work covers both government and private sectors, and includes new business development strategy, planning and execution, staff management, and proposal writing. Mr. Madi has served in leading transportation program management, business development, and client service management roles since 2009.


John Nelson, Vice President Infrastructure, Hanson Professional Services

John joined Hanson Professional Services in 1999 where he now oversees the operations of the Chicago regional office and continues to manage major highway projects including the reconstruction and widening of a 3.6-mile section of the South Tri-State Tollway in Cook County, Illinois; the widening and reconstruction of a 22-mile section of Interstate 90 (Jane Addams Memorial Tollway) in Boone, McHenry and Kane counties in Illinois; reconstruction of the I-90/I-39 interchange in Cherry Valley, Illinois; and the reconstruction of Interstate 74 through Moline, Ill., associated with the Mississippi River bridge replacement in Moline, Illinois and Bettendorf, Iowa. He currently serves as the design corridor manager for the Illinois Tollway’s Central Tri-State master plan, a study exploring widening and reconstruction of a 22-mile section from 95th Street to Balmoral Avenue.


Seth Millican, Executive Director, Georgia Transportation Alliance

Prior to joining the Georgia Transportation Alliance, Seth worked as Vice President of Public Affairs at Brock Clay Government and Public Affairs. He began his career working in various staff positions in the Georgia General Assembly. Seth earned his B.S. in Social Sciences from Thomas Edison State College. Seth has been recognized in various publications for his work on behalf of political causes and policy related initiatives. He was appointed by Governor Nathan Deal to Chair the Georgia Athletic and Entertainment Commission and also serves on the board of the Georgia Wildlife Federation. He is also a member of the American Enterprise Institute’s Leadership Network.  He’s married to his high school sweetheart, Kara, and they have three children. Seth loves Georgia sports teams, hunting, books and writing (on politics and culture), his faith, and his family.


Erin Aleman, Director, Office of Planning and Programming, Illinois Department of Transportation

Erin Aleman is the Director of the Illinois Department of Transportation’s (IDOT) Office of Planning and Programming (OPP). Under her guidance, the office develops plans and programs aimed at improving the state’s transportation system. Core functions include: oversight and coordination of the state’s planning efforts, developing the annual multi-year and multimodal programs, monitoring and surveillance of the physical condition of the transportation system, evaluation of costs and benefits of new infrastructure investments, and to provide data, mapping and research to support these and other projects across the department. The Office of Planning and Programming consists of five bureaus: Planning, Programming, Innovative Project Delivery, Data Collection and Mapping, and Research.


Chris Kiefer, Chief of Staff, Office of the Commissioner, Indiana Department of Transportation

Chris Kiefer became Chief of Staff for the Indiana Department of Transportation (INDOT) in August 2014. In this role, Kiefer oversees agency divisions that focus on communication, media relations, legislative services, and economic development. Prior to being named Chief of Staff, Kiefer served three years as INDOT Director of Public-Private Partnerships. In this position, he helped manage INDOT’s P3 projects and worked to develop the P3 project pipeline while overseeing active project procurements. Chris joined INDOT in 2005 as Legislative Director, representing INDOT in front state and federal legislators and agencies. As Legislative Director, he helped coordinate legislative changes to Indiana’s P3 statute. Before joining INDOT, he worked in Washington D.C. for a member of Indiana’s Congressional delegation.


Paul Kovacs, Chief Engineering Officer, Illinois Tollway

Mr. Kovacs is the Chief Engineering Officer for the Illinois Tollway and is responsible for the policies, practices and procedures of the Engineering Department, which oversees all design and construction operations on the agency's 294-mile system of roadways serving more than 1.6 million daily users in Northern Illinois. Currently, he is responsible for delivering the seventh year of the Illinois Tollway's 15-year,$14 billion capital program, Move Illinois: The Illinois Tollway Driving the Future. Mr. Kovacs earned his B.S. in Civil Engineering from the University of Illinois and is a registered professional engineer in Illinois and Michigan. In his nearly 35 years of professional engineering experience, 17 were spent in the consulting industry. He joined the Illinois Tollway in 1999.


Ed Hassinger, Chief Engineer, Missouri Department of Transportation

Ed Hassinger, P.E., was named Chief Engineer of the Missouri Department of Transportation on May 30, 2013. Previously he had served as St. Louis District Engineer for 12 years. As Chief Engineer, Hassinger oversees MoDOT’s transportation planning, design, construction, maintenance and operations activities statewide.  Hassinger, a native of Columbia and a 1983 graduate of the University of Missouri with a Bachelor of Science degree in Civil Engineering, began his MoDOT career in 1984 as a design engineer in the Bridge Division. He’s also worked as a traffic engineer, bridge maintenance engineer, assistant district engineer in the St. Louis District, and spent one year as the District Engineer in the Northeast District in Hannibal. He has committed his career to innovative solutions for Missouri’s transportation system.


Scott Reeise, Director, Public Works Department, City of Peoria

As Peoria’s Public Works Director, Scott oversees the seven divisions of the Department: Engineering, Streets and Sewers, Facilities, Traffic, Fleet, Urban Forestry and Administration which includes the management of Solid Waste. Mr. Reeise started his career with the City of Peoria as a Civil Engineer in March 2004. He was promoted to City Engineer in 2013, the position later reclassified as the Assistant Public Works Director in 2015. He has been involved in projects throughout the city, including the Allen/Alta roundabout, the University Street improvement project, the transformation of Main and University Streets and is currently working on the MacArthur Bridge repair project. Originally from Metamora, Director Reeise has a B.S. Degree in Civil Engineering from Bradley University and is a licensed Professional Engineer.


Jay Behnke, President & CEO, STATE Testing

Mr. Behnke is the founder and President of S.T.A.T.E. Testing, LLC. Prior to opening his own firm in 1999, Mr. Behnke began his career with the Illinois Department of Transportation. He served as the Area Mixture Control Supervisor for Northern Cook County (Chicago-metro area). He later branched into the private sector and served as QC manager for one of the largest paving contractors in Illinois. Mr. Behnke and his firms have been responsible for the developing mix designs and specifications that have allowed the increase in both performance and use of recycled materials for HMA and SMA materials across Illinois. Innovations include the first uses of GTR, FRAP, RAS, and warm mix technology in Illinois. Mr. Behnke developed the Chicago DOT’s binder bumping chart for design of high ABR mixes and has implemented regional specifications


Abdul Dahhan, Vice President of Engineering, Chicago Testing Laboratory

Abdul Dahhan recently joined CTL's already impressive lineup of industry professionals and will be taking on the role of Vice President of Engineering. Abdul is a registered Professional Civil and Environmental Engineer. Abdul has nearly 3 decades of Engineering experience with his latest role as Bureau Chief of Materials for the Illinois Department of Transportation. While with IDOT, Abdul developed many specifications for practical use in District 1 and Statewide related to the use of Aggregates, Portland Cement Concrete, and Hot Mix Asphalt, among other materials.
Mr. Dahhan is currently a member of the following committees: ASTM D04 Road and Paving Materials, and IRTBA Illinois Department of Transportation Joint Forum. Prior to joining CTL, Abdul worked at IDOT for 30 years. 


Shawn Phillips, BIM Director, F.H. Paschen

Shawn Phillips is the BIM Director at F.H. Paschen Construction in Chicago. Shawn is a licensed architect and LEED accredited professional who has worked in both construction and design for all of his 22+ year career. Shawn’s understanding of the entire design and construction process along with his passion for technology reinforce the strengths and values of F.H. Paschen, a well established construction firm in Chicago. Shawn has participated in several industry conferences as both a speaker and in panel discussions and was also an associate professor of BIM at the College of Dupage.


Grant Wollenhaupt, Director of Business Development, Superior Bowen

Grant is the Director of Business Development for Superior Bowen. As part of his duties, Grant oversees the operations of several Superior Bowen subsidiaries including Research to Roads, Green Paving Solutions, Construction Materials Testing Group and Bit-Mix Partners. A graduate of Saint John’s University, with majors in Pre-Medicine (emphasis in biochemistry), Political Science, and Constitutional Law, Grant came to work for Superior Bowen in 2009. Grant has been a guest speaker for state DOTs, APAs, and Universities on topics ranging from best practices in using Recycled Materials to Basics in Asphalt Chemistry and Modification. He has designed and overseen DOT pilot paving projects in NC and TX. Grant is a member of committees with the AAPT, MoDOT, NCAT, FHWA, APA, and Asphalt Institute Foundation. 


Richard Thuma, Group Manager, Military & Special Projects, Crawford, Murphy & Tilly, Inc.

Mr. Thuma has been an Aviation Design Engineer with Crawford, Murphy and Tilly for the past 18 years, and currently serves as Military & Special Projects Group Manager. He primarily works on the design and construction of airfield pavement projects at military and commercial airfields across the country. Prior to joining CMT, he developed a passion for airfield pavement evaluation and design while serving in the US Air Force for 8 years. Following active duty, he continued service in the Air Force Reserves for 13 years while working at CMT, retiring at the rank of Lieutenant Colonel. Rich completed his undergraduate civil engineering education at Northwestern University and later earned a master’s degree in civil engineering at the University of Washington.


Keith Killen, Transportation Project Manager, Missouri Department of Transportation

Keith Killen is a project manager for the Missouri Department of Transportation responsible for delivering highway and bridge projects for construction in MoDOT’s Northeast District. Keith graduated in from Truman State University in 1993 with a degree in Industrial Science and graduated from the University of Missouri – Columbia in 2002 with a degree in Civil Engineering. He is a licensed professional engineer in the state of Missouri. Keith is currently serving as the Project Director for MoDOT’s Champ Clark Bridge replacement project on U.S. Route 54 over the Mississippi River. This design / build project is a partnership between the Missouri Department of Transportation and the Illinois Department of Transportation.


Aimee Lee,  Senior Manager of Strategic Planning and Programming, Illinois Tollway

Aimee Lee, is responsible for long-range planning and capital programming for the 294-mile Tollway system. Ms. Lee joined the Tollway in 2013 and is currently responsible for overseeing the transition of planning for reconstruction of the Central Tri-State Tollway (I-294) to the design phase. Ms. Lee has 18 years of experience in transportation planning. She worked for the Chicago Transit Authority and the Regional Transportation Authority where she led many strategic planning and policy initiatives. She also worked in consulting where she engaged in planning and Phase 1 studies for both highway and transit projects. Ms. Lee earned her Bachelor of Science in Civil Engineering from the University of Illinois in Champaign-Urbana. She earned her Master of Science degree in Transportation Engineering from the University of California-Berkeley.


Steve Mednis, Incident Manager, Illinois Tollway

Steve began his employment with the Illinois Tollway in 2003 as an Equipment Operator/Laborer. In 2011, he became Maintenance Section Supervisor, serving several maintenance facilities. In January 2016, he was promoted to Incident Manager. In his current role, Steve oversees the incident response efforts of Maintenance, State Police, Fire and Rescue, Towing and Recovery for all 294 center lane miles of the Illinois Tollway. Additionally, he oversees the Tollways H.E.L.P. program, Central Sign Shop, Lane Closure Permits Department, Towing and Recovery Program as well as the Traffic Operations Center. He is also a certified trainer of the Statewide Traffic and Incident Management program.


Justin Lewis, Division Manager, Hayward Baker, Inc.

Justin Lewis, P.E. (IL) is a graduate of the University of Illinois at Urbana-Champaign with a B.S. (2007) and M.S. (2008) in Civil and Environmental Engineering with a focus on geotechnical engineering. He has worked at Hayward Baker for 9+ years after joining upon completion of his degrees in 2008. He has worked with a wide variety of technologies that Hayward Baker has to offer with particular experience in the fields of jet grouting, earth retention, micropiles, and driven piles. Justin has previously held roles as Field Engineer, Project Engineer, and Project Manager and currently serves as Division Manager for the Structural Support and Earth Retention System group in the Midwest with responsibilities for managing and supporting a talented team bidding, designing, and managing earth retention and deep foundation projects.


Hasan Ozer, Research Assistant Professor, ICT, UIUC

Dr. Ozer earned his BSCE degree from the Middle East Technical University, Turkey, MSCE degree from Northwestern University and PhD from UIUC. He joined the non-tenure track faculty of CEE at UIUC since August, 2011 as a Research Assistant Professor. His research is primarily concentrated in the areas of computational fracture mechanics, numerical modeling of pavement response, sustainable pavement systems, use of recycled materials in pavements, rheological and mechanical characterization of asphalt sealants and binders. Ozer currently serves as principal or co-principal investigator of several IDOT and FHWA sponsored studies on recycled material characterization and development of sustainable pavement systems. He has also been chairing the ASCE Transportation and Development Institute’s (T&DI) Highway Pavement Committee since 2014


Iris Caldwell, Program Manager for Sustainable Landscape, University of Illinois- Chicago

Iris Caldwell, P.E., is Program Manager – Sustainable Landscapes at the Energy Resources Center (ERC) at the University of Illinois at Chicago. She facilitates the Rights-of-Way as Habitat Working Group and other efforts to engage industries in pollinator habitat conservation. She also provides technical assistance in the development of greenhouse gas offset projects and protocols, evaluation of renewable fuel production technologies, and mobile combustion emissions modeling. Prior to joining the ERC, Ms. Caldwell worked for more than eight years in industry, both as a manufacturing facility environmental engineer and as an environmental consultant. She holds a Bachelor of Science degree in Civil – Environmental Engineering from Iowa State University.


Cassie Reiter, Senior Transportation Engineer, Crawford, Murphy & Tilly, Inc.

Cassie Reiter has been with Crawford, Murphy & Tilly for over 19 years in their St. Louis and Indianapolis offices. She is a licensed professional engineer, as well as an Envision Professional through the Institute for Sustainable Infrastructure. Over the years Cassie has worked on many projects which change the fabric of a community for the better. She works with communities to bring positive impacts - whether economic, social or environmental - through infrastructure. She has designed and managed projects through municipalities and DOT’s which transform public spaces into destinations by working with Engineers, Urban Planners, Landscape Architects and a variety of other professionals.


Jim Trepanier, Operations Engineer, Bureau of Materials, Illinois Department of Transportation

Jim Trepanier graduated from Michigan Technological University with a BS in Civil Engineering in 1991.Upon graduation, he began working for IDOT in the Bituminous Unit of the Bureau of Materials and Physical Research as a field engineer.Jim is a licensed P.E. and is presently the Hot-Mix Asphalt Operations Engineer for IDOT, Bureau of Materials and Physical Research. Duties in this position include developing and maintaining the statewide quality management program for HMA as well as developing and maintaining statewide HMA policies and specifications.


George Houston, Materials Engineer, Illinois Department of Transportation

George is a licensed Professional Engineer in Illinois and a graduate of the University of Illinois in Champaign with a Bachelor’s degree in Civil Engineering. He holds the position of Materials Engineer at the Illinois Department of Transportation in District 1 and has been with the Department for 28 years. During his time at IDOT he has been a Construction Inspector, Contract Designer, and a Resident Engineer. His work in the District Bureau of Materials began in 1992. He has held the position of Materials Inspector in Cook and Will Counties, Mixture Control Supervisor in North Cook, DuPage, and Kane Counties, and the position of District Mixture Control Engineer.


John Senger, Engineer of Pavement Technology, Illinois Department of Transportation

John Senger graduated with a Bachelor’s of Science in Civil Engineering from Bradley University in 2008. Over the next 8 years John worked as a consulting engineer working on a wide range of projects. John joined the Illinois Department of Transportation in the second half of 2015 as the Pavement Management and Analysis Engineer. John is currently the Engineer of Pavement Technology and his duties include the mechanistic-designed pavement monitoring program, pavement preservation, surface smoothness testing, and the friction testing program.


Robert Flemming Jr., Bituminous Mixtures Design Specialist, Illinois Department of Transportation

Rob graduated from Bradley University with a Bachelor of Science in Construction in 1999. He worked in private sector as a superintendent in Heavy-Highway construction for 2 years after graduation. He has been working at Illinois Department of Transportation in District 4 for 15 years. Rob began working in the HMA lab in Peoria in 2003 and was named the Bituminous Mixtures Design Specialist in 2011. His duties include the coordination, testing and reporting of the HMA QA done within the district.


Tom Chastain, Milling Application Specialist, Wirtgen America

Tom Chastain has been in the milling industry for 24 years and has done many projects and training sessions on four different continents. He is currently responsible for operational training on milling machines for demonstration purposes, operation and safety training for contractors along with municipalities and local union halls. Tom is currently the chairman for the Cold Planning Committee for ARRA Asphalt Recycling and Reclamation Association (ARRA). He obtained a BS in Graphic Arts from the University of Tennessee at Chattanooga.


Adam Taylor, Assistant Research Engineer, National Center for Asphalt Technology (NCAT)

Adam Taylor has been an Assistant Research Engineer at NCAT for 9 years and is the manager of the center’s advanced mixture performance lab. In this role, Adam is primarily involved in research projects related to materials characterization and lab to field comparisons using laboratory mixture performance tests. NCAT is one of the world’s leading institutions for asphalt pavement research and testing. He earned his Master’s Degree from Auburn University and is a registered Professional Engineer in the State of Alabama.


Steve Worsfold, Mixtures Control Engineer, Illinois Department of Transportation

Steve Worsfold graduated from the University of Illinois in 1991 and began his career with IDOT District 4. He was a Resident Engineer and Field Engineer in the Bureau of Construction until 2003. In 2003 he became the Mixtures Control Engineer and continues in that position to this day.


Cindy Williams, Deputy Chief of Program Implementation, Illinois Tollway

Cindy Williams joined the Illinois Tollway in March 2018 as deputy chief of program implementation. She brings with her 20 years of experience in construction and materials management with the Chicago Department of Transportation.

Under her leadership at CDOT, Ms. Williams established an innovative quality assurance program. The program was instrumental in filling a void created by a lack of emphasis on controls and accountability, providing a construction materials management system that is professional, transparent and efficient and bringing recognition to CDOT as a national leader in "green" pavement technology.

She joins the Tollway near the middle of its 15-year, $14 billion Move Illinois capital program and looks forward to the challenges ahead as she seeks to employ additional operational efficiencies and opportunities for innovation.