Our Team

Interwest has a wide range of specialty employees including operators, laborers, carpenters, and traffic control supervisors.  Our employees are well versed in the challenges of all types of construction and enjoy the full support of our full time safety and health officers, managers, and project engineers.

Our team is comprised of skilled craftsmen with rich histories in complex construction projects.  From pipe layers to welders to mechanics, Interwest has the right individuals who are fully resourced to complete any project.

At Interwest, we are committed to excellence.  It is how we have become many customer’s preferred contractor.  For over thirty years, our team has built a legacy by treating our customers, associates, and suppliers with honesty, fairness, and respect.  You can count on our commitment to excellence to ensure the success of your next project.


Eben Twaddle – President / Owner

Eben is the president and founding owner of Interwest Construction. He is actively involved in the day-to-day activities, resources, investigating strategic markets, and growth opportunities. Eben has an unrelenting passion for construction. His obsession with quality overflows to all aspects of the corporation. Eben leads with strength, integrity, and great attention to detail.




Dana Orbe, P.E. – Vice President / Contracts Manager

Dana has been with Interwest since 2009 and was named a Vice President in 2015. His career includes over 20 years of construction industry experience including both design and construction of heavy civil projects. Dana currently manages Estimating, Project Management and Human Resources for Interwest Construction.



Roy Swihart – Vice President / Operations Manager

Roy has been with Interwest since 2001, and became a Vice President in 2015. Roy has over 22 years of construction experience in Northwest Washington State. Roy manages all field operations including construction projects, field personnel, Equipment, Trucking, Safety, Surveying and equipment repair & maintenance.



Mark Suhadolnik – CFO / Treasurer

Mark has been the Chief Financial Officer for Interwest Construction since 2009. He has worked in the construction industry for over 35 years and oversees all accounting, accounts receivable, accounts payable and payroll for Interwest.




Bruce Vetch – Structures Superintendent

Bruce brings over 30 years experience in bridge, wall, pile driving and fish passage construction. He is responsible for all manpower, equipment and tools related to bridge and structures projects.




Bob Reick – Vice President / Operations Manager (Peninsula Division)

Bob has over 25 years construction experiences working in the Port Angeles area, and is currently responsible for all construction activities for his division.