MSS Inc. is a Corvallis-based engineering firm specializing in Civil Engineering, Structural Engineering, Surveying, and Land Use Planning. Since 1972, we have built a reputation for delivering high-quality, client-focused solutions across Oregon, Washington, California, and beyond, combining technical expertise with strong local knowledge and collaborative relationships.

Our team is dedicated to excellence, efficiency, and innovation, managing complex public and private projects with precision and care. By providing personalized attention and professional expertise, MSS Inc. consistently delivers results that meet client needs, foster long-term partnerships, and support the growth and well-being of the communities we serve.