WYDOT Executive Staff
William T. "Bill" Panos - Director
William T. "Bill" Panos was appointed the 17th Director of WYDOT in October 2015. Director Panos came to Wyoming with impressive credentials, drawing from diverse experience he's gained working in both the private and public sectors over the past 35 years.
Bill is a native of California and a graduate of the California State University where he studied physics and forensic science. His previous work has included engineering and leadership positions with the TRW Corporation, the Commonwealth of Massachusetts, the State of Washington and local government. Immediately prior to heading WYDOT, he was director of Wyoming's School Facilities Department for two years.
During his career, his work has intersected with numerous transportation-related functions and issues, including transportation safety, infrastructure development, capital finance and asset management, public policy and regulation, supplier management, multi-site operations, advanced risk assessment, and government relations.
Gregg Fredrick - Chief Engineer
Gregg Fredrick oversees all planning, design, construction and maintenance activities associated with the state’s transportation system in WYDOT’s five districts.
Fredrick first worked for WYDOT during 1980 as a temporary employee, and he returned in 1986 permanently as a bridge engineer, after earning his bachelor’s degree in civil engineering from the University of Wyoming. Fredrick subsequently worked his way up through the Bridge Program, becoming state bridge engineer in 2001. He joined WYDOT executive staff in June 2010 as assistant chief engineer for engineering and planning. He was named chief engineer in October 2015.
He is a Cheyenne native who served in the Wyoming Air National Guard from 1987 to 1997, attaining the rank of captain. Fredrick’s professional affiliations include AASHTO's Subcommittee on Bridges and Structures, the American Institute of Steel Construction, the Wyoming Engineering Society and Laramie County Community College Engineering Technology Advisory Committee.
Keith Fulton - Assistant Chief Engineer for Engineering and Planning
Keith Fulton oversees the Bridge, Contracts & Estimates, Geology, Highway Development, Materials, Planning and Right-of-Way programs as WYDOT’s assistant chief engineer for engineering and planning.
Fulton moved to the position after serving as state bridge engineer since 2010.
Fulton first worked for the Wyoming Highway Department during the summer of 1989 as a temporary employee based in Laramie. He joined the department on a permanent basis in early 1992 as an engineering analyst in the Bridge Program at Headquarters.
Fulton later served as a principal bridge engineer and then as assistant bridge engineer. Altogether, he has more than 29 years of service with the state, mostly with WYDOT.
A Riverton native, Fulton earned both bachelor’s and master’s degrees in civil engineering from the University of Wyoming. While he was student, he worked for the UW Civil Engineering Department.
His professional affiliations include the Wyoming Engineering Society, the American Association of State Highway and Transportation Officials’ Subcommittee on Bridges and Structures, and the Cheyenne Engineers Club, of which he is currently serving as vice president.
Mark Gillett, Assistant Chief Engineer for Operations
Mark Gillett, Assistant Chief Engineer for Operations
WYDOT officials appointed Mark Gillett as the assistant chief engineer for Operations in October 2016. As assistant chief engineer for Operations, Gillett oversees all five districts and the Employee Safety, Field Operations, Highway Safety and Traffic Design/Operations programs.
Gillett most recently served as district engineer for District 4 of WYDOT for the past 16 years. District 4 is based out of Sheridan and provides services for the northeast part of Wyoming.
Gillett started working for WYDOT in May 1980 as an engineer I in Gillette. After that, he served as resident engineer in Lovell, resident engineer in Cody, maintenance staff engineer in Cheyenne and district maintenance engineer for District 4 in Sheridan.
Gillett was born in Rapid City, S.D. He received a bachelor’s degree in civil engineering from the South Dakota School of Mines and Technology.
Dennis Byrne - Chief Financial Officer
Dennis Byrne is responsible for the financial and risk management operations of WYDOT. Those duties include the development of a financial and operational strategy, metrics tied to that strategy and the ongoing development and monitoring of control systems designed to preserve WYDOT assets and report accurate financial results.
Byrne previously served as the WYDOT Aeronautics administrator, a position he held from 2008 to 2016. In that position, Byrne was responsible for the state’s Airport Improvement Program, oversaw the disbursement of federal-aid funds for improving airport facilities, coordinated design of airport construction and maintenance projects, and managed flight services for the governor and other officials on state business.
Byrne graduated from the University of Wyoming in 1993 with a degree in economics, and he earned his Process Management Certificate from CSU-Denver in 2002. With WYDOT, he has served on special committees dealing with geographic information systems and strategic planning.
Taylor Rossetti - Support Services Administrator
Taylor Rossetti was appointed as the WYDOT Support Services Administrator effective July 2016 and oversees Compliance & Investigation, Driver Services, Human Resources, Motor Vehicle Services, Office Services and the Training programs.
He began with the Wyoming Department of Transportation in 2007. Originally hired as a transit specialist, he held multiple positions within the Office of Local Government Coordination prior to being named the Local Government Coordinator in 2012.
Rossetti is a Rock Springs native and graduated from the University of Wyoming with a degree in health sciences. He has worked for non-profits, in sales, and was a branch manager for a finance company prior to his WYDOT career.
Pat Lewis, Chief Technology Officer
Pat Lewis, who started in October, oversees the GIS/ITS/TMC, Information Technology/Data Storage/Web Applications and Telecommunications programs of WYDOT.
Lewis, who attended the University of Wyoming for broadcasting, isn’t brand new to WYDOT. In the early 1980s, he worked for Highway Safety driving the photo log van, recording images and the geometrics of the highways on film using a primitive computer and 35 mm motion picture camera. Those images were used by engineers and Patrol to look at roads for future work and for investigations.
After working here for three summers, Lewis went to work for Channel 5 News in Cheyenne, where he spent 14 years working in various positions. He worked his way up to production department manager, a position where he was responsible for all on-air technical aspects from sign-on to sign-off, including on-air commercial break operations and all news production personnel from studio camera operators to newscast directors.
Lewis then went to work for the Wyoming Game and Fish Department as that agency’s videographer, putting together the weekly broadcast. When an opportunity to become one of two of the state’s webmasters came up, Lewis went to work for the state’s Information Technology Department, which is now the state Department of Enterprise Technology Services.
After that, Lewis went back to Game and Fish as its network administrator and then Information Technology Program manager, a position he held for 16 years before coming to WYDOT.
Although he enjoyed his time at Game and Fish, Lewis said the growth potential with the new position and the agency’s philosophy prompted him to change agencies.
Lewis, a Cheyenne native, also does some work in freelance video. For the past 33 years, he has done television for Cheyenne Frontier Days rodeos and more recently has been responsible for recruiting local production crews who do the big screen production for CFD rodeos and concerts. Lewis is married and enjoys spending time with his wife and two daughters and taking photographs.
Christine Yaffa - Interim Aeronautics Administrator
Christine Yaffa was appointed interim Aeronautics administrator in August 2016. She oversees the distribution of state and federal funds for airport development through the state’s Airport Improvement Program, air service development through the Air Service Enhancement Program, and manages flight services for the governor and other officials on state business. Yaffa also serves as the Aeronautics Planning and Programming manager, a position she has held for more than 10 years.
Yaffa began her career with WYDOT in 1994 when she joined the Division as a planning intern. In the subsequent years, she has held the positions of planner, senior planner and program manager.
Yaffa is a Riverton native and holds a Bachelor of Science Degree in Aviation Business Administration from Embry-Riddle Aeronautical University.
Col. Kebin Haller - Highway Patrol Administrator
- Col. Kebin Haller became administrator and commanding officer of the Wyoming Highway Patrol in September 2015.Haller, a graduate of Rawlins High School, holds an associate's degree in business from Casper College and a bachelor's degree in administration of justice from the University of Wyoming. He is also a graduate of the FBI National Academy.Before joining the Highway Patrol, he was deputy director of the Wyoming Division of Criminal Investigation (DCI). Haller began his law enforcement career in 1991 as a police officer in Rawlins. In 1997, he joined DCI, serving in Green River and Riverton, before his promotion to deputy director and move to Cheyenne in 2003.Haller is an executive board member of the Rocky Mountain High Intensity Drug Trafficking Area, a past president of the Wyoming Peace Officers Association, and has served on the Wyoming Public Safety Communications Commission.