Office of Materials Staff
James Berger, P.E.
Office Director515-239-1843
james.berger@dot.iowa.gov
Ames Materials Staff
Chris Anderson
Materials Training515-239-1819
christie.anderson@dot.iowa.gov
Burt Chaska
Materials Testing Support515-239-1484
burton.chaska@dot.iowa.gov
Brian Gossman
Chief Geologist515-239-1204
brian.gossman@dot.iowa.gov
Todd Hanson, P.E.
PC Concrete Engineer515-239-1226
todd.hanson@dot.iowa.gov
Kevin Jones, P.E.
Testing Engineer515-239-1237
kevin.jones@dot.iowa.gov
Mahbub Khoda, P.E.
Prestressed & Precast Concrete Engineer515-239-1649
mahbub.khoda@dot.iowa.gov
Sam Moussali, P.E.
Structures Engineer515-239-1547
sam.moussalli@dot.iowa.gov
Jason Omundson, P.E.
Special Investigations Engineer515-239-1357
jason.omundson@dot.iowa.gov
Cheng Ouyang, P.E.
Cement and Concrete Engineer515-233-7837
chengsheng.ouyang@dot.iowa.gov
Pat Page
Materials Administration515-239-1370
patrick.page@dot.iowa.gov
Joe Putherikal, P.E.
Manufactured Products Engineer515-239-1259
joeseph.putherickal@dot.iowa.gov
Vacant
Bituminous Engineer515-239-1003
District Materials Engineers
John Heggen, P.E.
District 1
Materials Engineer515-239-1488
john.heggen@dot.iowa.gov
Keith Norris, P.E.
District 2
Materials Engineer515-423-7676
keith.norris@dot.iowa.gov
Shane Tymkowicz, P.E.
District 3
Materials Engineer712-239-4713
shane.tymkowicz@dot.iowa.gov
Daniel Redmond, P.E.
District 4
Materials Engineer712-243-2346
daniel.redmond@dot.iowa.gov
James Webb, P.E.
District 5
Materials Engineer641-472-3103
james.webb@dot.iowa.gov
Roger Boulet, P.E.
District 6
Materials Engineer319-366-0446
roger.boulet@dot.iowa.gov
