Engineer/Secondary Roads

Required to be a licensed civil engineer in the State of Iowa.
Term of employment is set by the Board of Supervisors, not to exceed three years.
Bond is set a minimum for $3,000.

Powers and duties of the County Engineer:

  • Direct all construction and maintenance work of the Secondary Road Department.
  • Develop a Secondary Road Construction Program.
  • Inspect all contracts to confirm they are executed according to specifications of the Iowa Department of Transportation.
  • Submit an annual report to the county and state of all road fund expenditures.

Helpful Forms & Links

Plymouth County Engineer
32802 170th St.
PO Box 1227
Le Mars, IA 51031

Telephone: 712-546-4559
Fax: 712-548-4008

Thomas G. Rohe, P.E.
Thomas G. Rohe, P.E.

Office Hours:
(September - May)
Monday - Friday
8:00 AM to 4:30 PM

(June - Aug)
Monday - Friday
7:00 AM - 3:30 PM


Mark Marienau
Assistant to the Engineer

Trudy Seng
Administration Assistant

Zach Holtgrewe

Chase Eickholt

Noah Livermore

Isaac Thompson

Pete Holtgrew
Maintenance Superintendent
Telephone 712-546-4601