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 IV – President / Owner

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

Mark Suhadolnik – Treasurer / CFO 

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

Roy Swihart – Vice President / Operations Manager

Roy started with Interwest in 2001 in the field, since that time he has worn many hats and grown with the company. In 2015, Mr. Swihart was named Vice President of Operations. Roy is an expert at managing teams. His understanding of the field allows him to effectively communicate with the departments he manages, which includes all field operations, field personnel, equipment, trucking, safety, equipment repair & maintenance. Roy has over 22 years of construction experience in Northwest Washington State.

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

Dana joined Interwest in 2009 and was named Vice President/Contracts Manager in 2015. His career has included over 20 years of construction industry experience including both design and construction of heavy civil projects. He currently oversees estimating and project management.

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

Bob came to Interwest in 2014 at the start of the Peninsula Division. In 2018, Mr. Reick was named Vice President/Operations Manager (Peninsula Division). With his strong leadership skills, he oversees and supports all projects and personnel for the Division. He brings over 25 years of construction experience working in the Port Angeles area.


Brad Wyman – General Superintendent (Civil)

Mr. Wyman has been with Interwest Construction, Inc. since April 2010.  Since that time his duties have included heavy equipment operator, project foreman and project superintendent.  In 2015, Brad became our General Civil Superintendent. As General Superintendent, Mr. Wyman oversees and supports projects and foreman for field projects.  With his strong leadership skills, as well as mechanical skills background, he easily jumps in and is hands on at many job sites when necessary. 

Bruce Vetch – Structures Superintendent

Bruce has over 30 years experience in bridge, wall, pile driving and fish passage construction. With his extensive background he pays close attention to detail to ensure safety and quality are at the forefront of each project. Mr. Vetch is responsible for all manpower, equipment and tools related to bridge and structures projects.