Larry Den Herder accepts Contractor of the Year Award on behalf of Interstates Companies


Control system & electrical system updates enable increased production


This design-build project included electrical engineering, instrumentation, and controls.

Our Work

Learn more about what we do. View our Experience Portfolio.


Relationships vital to 60-year Interstates Companies' history. Find out more in the Fall 2013 newsletter.

About Us

Focused on delivering quality services to our clients.

Join Our Network

Be notified of career opportunities as they become available.