Our Team

Interwest has a wide range of specialty field 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 is always seeking resources and investigating strategic markets with growth opportunities. Eben also sits on the Board of Directors to the Skagit Conservation District, as a board member he provides oversight and direction to the CD staff, sets goals and policies, approves conservation plans and contracts, and certifies conservation plans.

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.

Roy Swihart – Vice President / General Manager

Mr. Swihart plays a leading role in implementing processes and practices across Interwest Construction. His duties include formulating strategy, improving performance, procuring material and resources and securing compliance. He manages and oversees our project management and engineering teams.

He began his journey with Interwest in 2001 as a pipe layer in the field, since that time he has worn many hats and grown with the company. In 2015, Roy was named Vice President of Operations, he is an expert at managing teams. His understanding of the field allows him to effectively communicate with departments he manages. Roy has over 24 years of construction experience in Northwest Washington State.

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

Mr. Orbe was responsible for the creation and development of the Bridge & Structures Division at Interwest. His vast experience as a senior level project manager and estimator in design and construction of large civil and structural construction projects gives him a unique perspective in the importance in creating collaborative teams to create successful project partnerships.

Dana joined Interwest in 2009 and was named Vice President/Contracts Manager in 2015. His career has included over 25 years of construction industry experience including both design and construction of heavy civil projects.

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

Mr. Reick has played a major role in the start of our “Peninsula Division”. He is responsible for employing processes and procedures to streamline everyday business. He joined the Interwest team in 2014 which began the “Peninsula Division” based in Sequim, WA.

In 2018, Bob was named Vice President of Operations. With his strong leadership skills, and construction background 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 General Civil Superintendent. 

As General Superintendent, he oversees and supports field project superintendents and project foreman personnel, as well as coordinating trucking and traffic control needs with those managers.  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.