Our Team
Dennis D. Skogen
Dennis D. Skogen, MSME, PE, Partner
Email: dennis@skogenengineering.com
Dennis has been specializing in reconstructing accidents for 43 years including motor vehicle, industrial and farm machinery accidents. He earned both his Bachelor of Science and Master of Science Degrees in Mechanical Engineering from the University of Wisconsin at Madison. Dennis has been a licensed Wisconsin professional engineer since 1971.
Jeffery J. Peterson
Jeffery J. Peterson, MSME, PE, Partner
Email: jpeterson@skogenengineering.com
Jeff has been a consulting engineer working in the area of accident reconstruction and investigation since 1984. He earned both his Bachelor of Science and Master of Science Degrees in Mechanical Engineering from the University of Wisconsin at Madison. Jeff has been a licensed Professional Engineer in the State of Wisconsin since 1984.
Robert J. Wozniak
Robert J. Wozniak, MSME, PE, Partner
Email: wozniak@skogenengineering.com
Bob has been a consulting engineer specializing in accident investigation and reconstruction since 1993. He earned both his Bachelor of Science and Master of Science degrees in Mechanical Engineering from UW – Madison. Bob is also a licensed Professional Engineer in the state of Wisconsin.
Paul T. Erdtmann
Paul T. Erdtmann, BSEE, MSME, PE, Partner
Email: erdtmann@skogenengineering.com
Paul has been a consulting engineer specializing in accident investigation and reconstruction since 2005. Prior to joining the group, he worked in the automotive industry for 13 years. He earned a Bachelor of Science Degree in Electrical Engineering from Northwestern University – Evanston, IL and a Master of Science Degree in Mechanical Engineering from the University of Wisconsin at Madison. He is also a licensed Professional Engineer in the state of Wisconsin.
Zachary R. Bingen
Zachary R. Bingen, MSME, PE, Partner
Email: bingen@skogenengineering.com
Zack holds a Master of Science in Mechanical Engineering from the University of Wisconsin – Madison. Zack has been a licensed Professional Engineer in the State of Wisconsin since 2016, and has been consulting in accident reconstruction since 2011.
Stephen L. Hanko
Stephen L. Hanko, MSME, PE, Partner
Email: hanko@skogenengineering.com
Stephen holds a Master of Science in Mechanical Engineering from the University of Wisconsin – Madison and a Bachelor of Science in Physics from the University of Wisconsin – La Crosse. Stephen has been a licensed Professional Engineer in the State of Wisconsin since 2024. He has been consulting in accident reconstruction since 2017.
Jackson W. Benda
Jackson W. Benda, BSME
Email: Benda@skogenengineering.com
Jackson holds a Bachelor of Science in Mechanical Engineering from the University of Wisconsin – Madison. He has been assisting in accident reconstruction since 2023.
Andrew C. Knutson
Email: aknutson@skogen.com
Andy has experience in designing temporary bridges, rating existing bridges, designing construction falsework and shoring systems, and developing repair procedures for rehabilitation of existing structures and new residential and commercial buildings. Andy obtained a Bachelor of Science in Civil Engineering in 1995, and a Masters of Science in Structural Engineering in 1997, both from Marquette University in Milwaukee, WI. He is a registered Professional Engineer (PE) in Alabama, Arkansas, Georgia, Indiana, Louisiana, Maryland, Mississippi, Nebraska, Nevada, New York, North Carolina, South Carolina, Tennessee, Texas, Virginia, Wisconsin and Wyoming, and a registered Structural Engineer (SE) in Illinois. He also has extensive experience in forensic engineering and failure analysis including structural collapse of buildings, bridge structures and agricultural facilities. He regularly handles forensic projects involving proper material usage, proper drainage, and temporary shoring during construction, as well as fire, flood, hail and wind damage. He is familiar with all applicable structural design codes, including AASHTO Standard Specification for Highway Bridges and AASHTO Guide Specification for Bridge Temporary Works, AISC, ACI, IBC and is an OSHA qualified person. Andy lives in Spring Green, WI with his wife and children. When he is not busy working on their 1920s home, he enjoys playing tenor saxophone in a local jazz band, riding his motorcycle, and spending time with his family camping and practicing Taekwondo.
Aaron B. Palmer
Email: office@skogenengineering.com
Aaron received a Bachelor of Science degree in Civil Engineering from the Illinois Institute of Technology in Chicago, IL. He has nearly 15 years of construction management experience and has effectively managed projects for the federal, state and local governments. He has also worked with private developers to deliver their projects within their allotted budget and time frame. He is a Professional Engineer in Wisconsin. He is certified in the field-testing of aggregates and concrete. He is also a Federal Highway Administration certified bridge inspector and bridge coatings inspector. He has performed over 500 routine bridge inspections in his career.
Mary E. Stoflet
Mary E. Stoflet, AB, Retired Partner
Email: mary@skogenengineering.com
Mary has over 30 years of experience in the area of field coordinating and administration with a focus on marketing in the area of accident reconstruction.
James W. Torpy
James W. Torpy, BS, Partner
Email: torpy@skogenengineering.com
Jim is a computer analyst with expertise in computer programming and animation. He has assisted in the field of accident reconstruction since 1988. He earned a Bachelor of Science Degree in Computer Science from the University of Wisconsin – Madison.