Minnesota Department of Transportation

511 Travel Info

Road Research

NRRA Preventive Maintenance Team

Orange barrels on a highway

Preventive Maintenance Team Members

Agency Members

Florante Bautista, Caltrans – California DOT
John Brunkhorst, Minnesota Local Road Research Board - McLeod County
Mark Gawedzinski, Illinois DOT
Jerry Geib, Minnesota DOT
Robert Green, Michigan DOT
Myungook Kang, Wisconsin DOT
Pete Kemp, Wisconsin DOT
Jeffery Kroner, Missouri DOT
Leo Mahserelli, Caltrans – California DOT
Jesse Nelson, North Dakota DOT
Phil Ruffus, Missouri DOT
Mike Shea, Missouri DOT
Joel Ulring (Chair), Minnesota DOT
Stephanie Weigel, North Dakota DOT

Associate Members

Başak Bektaş, Minnesota State University - Mankato
Robert Betsold, All States Material Group
Rod Birdsall, All States Material Group
Brandon Brever, Minnesota Asphalt Pavement Association (MAPA)
Ashley Buss, Asphalt Materials & Paving Program (Iowa State)
Douglas Carlson, Liberty Tire Recycling
Eshan Dave, University of New Hampshire
Jolee Dominowski, Dow Chemical
Tyler Eckenrode, Flint Hills Resources
Michael Freisthler, Bio-Based Spray Systems
Andrew Hanz, Mathy Construction
Dale Heglund, North Dakota State University
Buzz Powell, National Center for Asphalt Technology (NCAT)
John Roberts, International Grooving and Grinding Association
Timo Saarenketo, Roadscanners, USA
Feng Wang, Texas State University
Gregory Weber, NIRA Dynamics AB
Dan Wegman, Braun Intertec
Björn Zachrisson, NIRA Dynamics AB

Friends and support staff

Amy Beise, North Dakota DOT
Jason Blomberg, Missouri DOT
Melissa Cole, Minnesota DOT
Bryon Fuchs, North Dakota DOT
Eddie Johnson, Minnesota DOT
Kevin Kliethermes, FHWA
Joe Korzilius, SRF Consulting
Renae Kuehl, SRF Consulting
Clark Moe, Minnesota DOT
Aaron Perez, North Dakota DOT
John Senger, Illinois DOT
Michael Vrtis, Minnesota DOT
Ben Worel, Minnesota DOT
Tom Zimmerman, Minnesota DOT