Contact Us

Bridge Group is responsible for bridge design, bridge construction assistance and bridge management. Written communication can be sent to this address:

    205 S. 17th Ave.
    MD 613E
    Phoenix, AZ 85007
    Phone: 602.712.7481

Contacts by Service Area

David Eberhart
State Bridge Engineer

Bridge Group provides three types of services: design, geotechnical and preservation.

Design Services

Each design section has been assigned the responsibility to handle all structural issues for their assigned geographic regions within the state as indicated below. Note: Any questions regarding areas of responsibilities for Phoenix metro area structures should be directed to the Bridge Group office through the contact information provided on this page.

Contact Position Area of Responsibility
David Benton Assistant State Bridge Engineer Design Services
Ken Ruffennach Design Section A Leader Coconino, Pinal, Pima and Santa Cruz
Navaphan Viboolmate Design Section B Leader Maricopa (outside of the Phoenix metro area), Mohave, La Paz, Yavapai and Yuma
Sheng-Yung Hsu Design Section C Leader Apache, Cochise, Graham, Gila, Greenlee and Navajo
Geotechnical Services
Contact Position Area of Responsibility
J.J. Liu
Geotechnical Services Engineer
Acting Geotechnical Design Section B Leader
Geotechnical Services,
Maricopa, Yuma, Pinal, Pima, Apache, Gila, Greenlee, Graham, Cochise
Brent Conner
Geotechnical Design Section A Leader & Planning Engineer
Mohave, Coconino, Yavapai, Navajo
Program development and resource allocation
Geotechnical Design Section B Leader
Steve Haire
Geotechnical Operations Leader Field Investigations, Material Sources
Preservation Services
Contact Position Area of Responsibility
Pe-Shen Yang Assistant State Bridge Engineer Bridge Operations and Preservation Services
Peng Chen Section Leader Team A – Bridge Inspection
Vacant Section Leader Team B – Inspection Data Records
Amin Aman Section Leader Team C – Load Ratings and Technical Support
Section Leader Team D – Bridge Hydraulics

Civil RightsTitle VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA)