Interwest has delivered multiple fish passage projects for local agencies and WSDOT. Interwest is a firm built on family values that strives to work in collaboration with our clients to deliver the best value for our projects. Our projects are constructed with the highest regard for safety, quality, schedule, budget, the community, and the environment. Interwest has never had an environmental violation on any of our projects, attesting to our attention to detail and commitment to excellent project delivery.