WYDOT Executive Staff

William T. "Bill" Panos - Director


William T. "Bill" Panos is the 17th Director of the Wyoming Department of Transportation. Director Panos came to Wyoming in 2013 after 37 years leading private and public sector organizations.

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.

Bill also plays a leadership role in infrastructure issues for the United States. He serves on the Board of Directors for the American Association of State Highway Transportation Officials (AASHTO), the National Operations Center of Excellence, and is Chairman of the AASHTO Committee on Transportation System Operations. In 2018, he was named a Henry Toll Fellow by the Council of State Governments. Previously he served as Director for the Port of Sacramento, Advisor to the President’s Council on Sustainable Development, and Special Assistant to the Chancellor of the California State University System.

During his career, his work has intersected with numerous transportation-related functions and business issues, including large-scale infrastructure development, transportation safety, automotive manufacturing, institutional reform and reorganization, capital finance and asset management, public policy and regulation, multi-site operations, advanced risk assessment, and government relations.

Gregg Fredrick - Chief Engineer


Gregg C. Fredrick is the Chief Engineer for the Wyoming Department of Transportation. In this role, he oversees the planning, engineering, and construction programs responsible for the delivery of the State’s transportation improvement program.  He also oversees the operational aspects (safety, maintenance, traffic, operations, facilities, and equipment) of the state’s assets.  

A Cheyenne native, Fredrick began working for WYDOT in 1980 as a temporary employee. He graduated from the University of Wyoming with a bachelor’s degree in civil engineering and was hired as an engineer in 1986. He worked his way up through the ranks of the Bridge Program, becoming State Bridge Engineer in 2001. Fredrick joined WYDOT executive staff in June 2010 as Assistant Chief Engineer for Engineering and Planning, and was named Chief Engineer in October 2015. Fredrick is a licensed professional engineer in the state of Wyoming.

Engaged in the on going development of national transportation policy, Fredrick is a member of AASHTO’s Transportation Policy Forum, the Highways and Streets Council, and he serves as the Chair for AASHTO’s Committee on Bridges and Structures, a position he has held  since 2012.  

He continues to collaborate with industry and academic professionals through research efforts to advance the state of the art in infrastructure design and maintenance activities. He participated on several Transportation Research Board committees, he chaired two national cooperative research projects, and served as a member on several other national research panels.

Fredrick served in the Wyoming Air National Guard from 1987 to 1997, attaining the rank of captain, and is a member of the Laramie County Community College Engineering Technology Advisory Committee.

In his spare time, Gregg enjoys running, biking, and spending time outdoors.

Dennis Byrne - Chief Financial Officer

Dennis-Byrne-web-2016.jpgDennis 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

TaylorRossettiWeb.jpgTaylor 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

Lewis-Pat.jpgPat Lewis 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 Office. After working at WYDOT for three summers, Lewis went to work for Channel 5 News in Cheyenne, where he spent 14 years working in various positions, including as a Production Department Manager.

Lewis then went to work for the Wyoming Game and Fish Department and then the state’s Information Technology Department, which is now the state Department of Enterprise Technology Services.

After that, Lewis went back to the Game and Fish Department as its Network Administrator and then Information Technology Program Manager, a position he held for 16 years before coming to WYDOT.

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.

Brian Olsen - Aeronautics Administrator

Brian Olsen

Brian Olsen was appointed Aeronautics administrator in May 2018. He oversees the distribution of state and federal funds for airport development through the state’s Airport Improvement Program, the design of airport construction and maintenance projects, air service development through the Air Service Enhancement Program, and manages flight services for the governor and other officials on state business.

A Rawlins native, Olsen earned a bachelor’s degree in Civil Engineering from the University of Wyoming in 2002. He started his engineering career at the Wyoming Department of Transportation in the Bridge Program. His interest in aviation led him to a position with The Boeing Company in Seattle, Washington, in 2004 as a structural engineer on the 747 program. In 2008, he returned to the Bridge Program and subsequently to the Aeronautics Division in 2010.

In his spare time, he enjoys spending time outdoors and traveling with his three children and wife.

Col. Kebin Haller - Highway Patrol Administrator

Col. Kebin Haller

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.