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Administrative and Engineering Staff
Name Position Phone Number
Jon Ranney, P.E. / P.L.S. district engineer 641-422-9465
David Little, P.E. assistant district engineer 641-422-9464
Dave Roeber, P.E. district construction engineer 641-422-9448
Keith Norris, P.E. district materials engineer 641-423-7676
Randy Taylor district maintenance manager 641-423-8516
Robert Welper, P.E. local systems engineer 641-422-9467
Nick Humpal, P.E. design staff engineer 641-422-9446
Mark Callahan, P.E. design staff engineer 641-422-9442
Krista Rostad transportation planner 641-423-7584
Pete Hjelmstad field services coordinator 641-422-9459
Ken Stark, P.L.S. land surveyor 641-422-9460
Paige Merrill secretary 2 641-422-9440
April Concepcion secretary 1 641-423-7676
Jessica Jeffery secretary 1 641-423-8516
Tom Brunscheon engineering technician senior (construction) 641-422-9451
Dean Wiebke engineering technician senior (construction) 641-422-9449
Robert Clark engineering technician senior (traffic technician) 641-423-8516
Christopher Suntken engineering technician senior (local systems) 641-422-9443
Brent Coggins engineering technician senior (design) 641-422-9444
Tracy Meise engineering technician senior (design) 641-422-9445
Dan Mackey engineering technician senior (right-of-way) 641-422-9455
Dan Chipera design technician (right-of-way) 641-422-9452
Duane Nie P.L.S. design technician (right-of-way) 641-422-9454
Miranda Eilders survey party chief (right-of-way) 641-422-9458
Dave Ramirez engineering operations technician (Waterloo) 319-235-1832
Kathie Rustad engineering operations technician (Decorah) 563-382-3631
Craig Wood engineering operations technician (Mason City) 641-423-8516
Chuck Scholl construction technician assistant (right-of-way) 641-422-9456