Inside ADOT

Executive Leadership

John S. Halikowski
John S. Halikowski

John Halikowski is the director of the Arizona Department of Transportation. He has served as Motor Vehicle Division deputy director, research director for the Arizona House of Representatives and research analyst for the Arizona House Transportation Committee. John received his degree in communications from Arizona State University.

John is the immediate past president of WASHTO and serves on a number of transportation-related boards and commissions, including the HELP, Inc. Board, the ITS America Leadership Circle and the TRB Executive Committee, as well as the TRB Subcommittee on Planning and Policy Review. He is the chair of the AASHTO Standing Committee on Research (SCOR), and cochairs the Arizona Transportation and Trade Corridor Alliance (TTCA).

Dallas Head Shot
Dallas Hammit
State Engineer
Deputy Director for Transportation

Dallas Hammit currently serves as state engineer and deputy director for transportation. As leader of the Intermodal Transportation Division (ITD), Dallas oversees development and delivery of the ADOT construction program, including environmental studies, engineering design, land acquisition and construction. He also supports the maintenance and operation of more than 6,000 miles of interstate and state highways in Arizona.

Dallas joined ITD in June 1999 as senior resident engineer in the Yuma District. He later served both the Yuma and Prescott Districts as district engineer. In 2009, Dallas became deputy state engineer for operations, and in 2012, he became senior deputy for development. In June 2014, Dallas was appointed director of ITD.

Scott Omer
Scott Omer
Deputy Director for Operations

Scott Omer currently serves as the deputy director for operations, which oversees many of the department's internal operational functions and support for all divisions, including the Administrative Services Division, Human Resources and Civil Rights, Information Technology, Leadership and Employee Engagement, and the Arizona Highways magazine.

With over 20 years of transportation experience that includes work in transportation planning, programming, project management, project development and operations, Scott's knowledge and experience, coupled with his dedication to public service leadership, are a vital addition to the Director's Office as we address many current and future challenges facing our organization.

After proudly serving in the United States Marine Corps and as a veteran of Operation Desert Shield / Desert Storm, Scott began his ADOT career in 1993 in the Yuma District. In 2010, Scott became the Planning and Programming Group director in the Multimodal Planning Division and was appointed assistant director for ADOT's Multimodal Planning Division in September 2011. Scott has a bachelor's degree in business management and is certified as a professional transportation planner (PTP) and a certified public manager (CPM).

Floyd Roehrich, Jr.
Floyd Roehrich, Jr.
Deputy Director for Policy

Floyd Roehrich, Jr., currently serves as deputy director for policy for ADOT. He is responsible for all transportation planning and assists with public-private partnership activities within the agency. He also serves as the primary liaison between ADOT and the State Transportation Board and assists the director in policy matters. Floyd also works with Arizona’s metropolitan planning organizations, councils of government, the Federal Highway Administration and other stakeholders.

Floyd served as deputy state engineer for Valley Transportation Group in December 2007 and as state engineer from 2008 to 2011. He has over 25 years of engineering experience, more than 16 of which are with ADOT in Roadway Engineering, Statewide Project Management and Valley Project Management Group.

Sonya Herrera
Sonya Herrera
Assistant Director, Administrative Services Division

Sonya Herrera serves as assistant director for the Administrative Services Division and manages seven work groups handling audit/analysis, equipment services, facilities management, Grand Canyon National Park Airport, organizational/employee development, procurement, and safety and risk management. She has been with ADOT since 2001, serving as the director of the Office of Safety and Risk Management and as the occupational safety administrator. In these positions, she directed the development of the agency's safety processes and loss prevention programs that protect 4,300 employees and ensured overall safety compliance in more than $1 billion of construction projects and maintenance activities. Prior to joining ADOT, Sonya worked in safety management positions for private-sector companies in the United States and Kuwait. She earned a bachelor's degree from Auburn University and completed Arizona State University's Institute for Public Executives program. Sonya is a U.S. Army veteran and served in Operation Desert Storm.

Terry Conner
Terry Conner
Assistant Director, Enforcement and Compliance Division

Terry Conner serves as the assistant director for the Enforcement and Compliance Division, which consists of the Office of the Inspector General, the Executive Hearing Office and Commercial Vehicle Enforcement. Terry previously served more than 30 years with the Arizona Department of Public Safety (DPS) in a variety of assignments throughout the department, including senior level commands in both operational and administrative responsibilities.

An advocate for highway safety, he's addressed audiences throughout the United States on highway safety issues. An accomplished instructor, he's also taught a variety of subjects including vehicle theft investigation, police ethics, media and public relations, problem-oriented policing, and incident command systems. He's facilitated programs toward maximizing productivity, teamwork and quality issues for police management personnel.

While at DPS, Terry was selected to serve a yearlong assignment at the U.S. Department of Transportation's National Highway Traffic Safety Administration (NHTSA) in Washington, D.C. While there, he researched and published a model manual for police managers nationwide dealing with occupant protection issues. Following his assignment in Washington, he was honored with the NHTSA Award for Public Service.

A graduate of the Senior Executive Program at the Kennedy School of Government at Harvard and the Institute for Public Executives at Arizona State University, Terry has written a number of articles that have been published in the IACP journal, Police Chief and the FBI Bulletin. The articles covered a variety of topics ranging from management issues to police tactics.

Kevin Biesty
Kevin Biesty
Assistant Director, Government Relations and Communications

Kevin Biesty currently serves as assistant director for the Government Relations and Communications Office and leads the proactive and effective process through which ADOT communicates with and serves Congress, the legislature and the people of Arizona.

Kevin joined ADOT's Motor Vehicle Division in February 2000 as a legislative liaison. Previously, he served as legislative liaison for the Arizona Department of Economic Security. Prior to that position, he served on staff at the Arizona state Senate. Kevin earned his bachelor's degree in business management from the University of Phoenix.

Eric Jorgensen
Assistant Director, Motor Vehicle Division

Eric Jorgensen has worked for the state of Arizona since 2004. Most recently, he served as the deputy director for administration at the Arizona Department of Child Safety (DCS), where he oversaw the separation of the DCS from the Department of Economic Security and the creation of the administrative structure for the new agency. Previously, he served as chief financial officer for the $800 million self-insured state employee benefit program and as assistant director for the Arizona Joint Legislative Budget Committee. Eric received his bachelor's degree in international political science from Brigham Young University, and his master's degree in international affairs with an emphasis on economic policy from Columbia University.

For more information regarding ADOT executive leadership, please contact us at 602.712.7355.