Meet Our Staff

Specifications Engineer

Eric Johnsen, P.E.
E-mail: eric.johnsen@iowadot.us

  • Coordinates the specifications functions for the Department, and provides liaison between the department, FHWA, state legislature, and the construction industry regarding specification issues.
  • Coordinates the Specification Committee, which reviews recommendations for specification changes and oversees implementation of those changes.
  • Serves as the liaison for the Iowa Statewide Urban Specifications and Design (SUDAS) group.
  • Serves on various other task forces and committees for the department.

Assistant Specifications Engineer

Donna Matulac
E-mail: donna.matulac@iowadot.us
  • Reviews/writes Supplemental Specifications and Developmental Specifications, checking for accuracy and compliance with Iowa DOT and federal requirements.
  • Compiles revisions to the General Supplemental Specification to update/revise the Standard Specifications semi-annually.
  • Prepares minutes of all Specification Committee meetings, including joint meetings with industry associations.
  • Attends and makes presentations at the Iowa DOT and industry conferences.
  • Coordinates specification automation needs.
  • Edits the new Standard Specification Books for publishing.

Information specialist 

Matthew Herman
E-mail: matthew.herman@iowadot.us

  • Maintains the electronic reference library (ERL) and oversees its publication.
  • Produces the opening page and graphic portions of the ERL CD, General Supplemental Specification cover, and ERL CD label.
  • Prepares general supplemental specifications for printing and publication.
  • Updates and maintains the master copy of the Standard Specification Book and coordinates its publication.
  • Serves as web developer.


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