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Office of Materials Staff

James Berger, P.E.

Office Director
515-239-1843
james.berger@dot.iowa.gov

Ames Materials Staff

Chris Anderson

Materials Training
515-239-1819
christie.anderson@dot.iowa.gov

Burt Chaska

Materials Testing Support
515-239-1484
burton.chaska@dot.iowa.gov

Brian Gossman

Chief Geologist
515-239-1204
brian.gossman@dot.iowa.gov

Todd Hanson, P.E.

PC Concrete Engineer
515-239-1226
todd.hanson@dot.iowa.gov

Kevin Jones, P.E.

Testing Engineer
515-239-1237
kevin.jones@dot.iowa.gov

Mahbub Khoda, P.E.

Prestressed & Precast Concrete Engineer
515-239-1649
mahbub.khoda@dot.iowa.gov

Sam Moussali, P.E.

Structures Engineer
515-239-1547
sam.moussalli@dot.iowa.gov

Jason Omundson, P.E.

Special Investigations Engineer
515-239-1357
jason.omundson@dot.iowa.gov

Cheng Ouyang, P.E.

Cement and Concrete Engineer
515-233-7837
chengsheng.ouyang@dot.iowa.gov

Pat Page

Materials Administration
515-239-1370
patrick.page@dot.iowa.gov

Joe Putherikal, P.E.

Manufactured Products Engineer
515-239-1259
joeseph.putherickal@dot.iowa.gov

Vacant

Bituminous Engineer
515-239-1003

District Materials Engineers

John Heggen, P.E.

District 1

Materials Engineer
515-239-1488
john.heggen@dot.iowa.gov

Keith Norris, P.E.

District 2

Materials Engineer
515-423-7676
keith.norris@dot.iowa.gov

Shane Tymkowicz, P.E.

District 3

Materials Engineer
712-239-4713
shane.tymkowicz@dot.iowa.gov

Daniel Redmond, P.E.

District 4

Materials Engineer
712-243-2346
daniel.redmond@dot.iowa.gov

James Webb, P.E.

District 5

Materials Engineer
641-472-3103
james.webb@dot.iowa.gov

Roger Boulet, P.E.

District 6

Materials Engineer
319-366-0446
roger.boulet@dot.iowa.gov