Slayden Constructors, a part of MWH Constructors, is a premier civil contractor in the Pacific Northwest specializing in complex water and wastewater infrastructure. For more than 40 years, we have delivered critical treatment facilities, pump stations, pipelines, dams, fisheries and heavy civil projects that safeguard public health and strengthen communities. Our reputation is built on technical expertise, disciplined execution, and a relentless commitment to safety, quality, and schedule certainty. Backed by the national resources of MWH Constructors and powered by a highly skilled local workforce, we bring deep industry knowledge and a builder’s mindset to every project we undertake.
Learn MoreSlayden Constructors is a trusted partner in collaborative and alternative delivery projects across the Pacific Northwest. Our experienced team brings deep expertise in CM/GC, Progressive Design-Build, and other integrated delivery models, —particularly for complex water and wastewater treatment facilities and associated infrastructure.
As a single-source partner backed by the national resources of MWH Constructors, we integrate preconstruction and construction seamlessly, ensuring continuity, accountability, and performance from concept through commissioning. Our approach is rooted in trust, clear communication, and a solutions-oriented mindset. By fostering strong collaboration among owners, designers, trade partners, and stakeholders, we create high-performing teams that deliver complex infrastructure safely, efficiently, and with confidence.
For more than 25 years, we have delivered value by engaging early and leading disciplined preconstruction efforts that drive cost certainty, schedule reliability, and informed decision-making. Through detailed constructability reviews, transparent estimating, risk identification, and proactive phasing strategies, we help align scope, budget, and design before construction begins.
At Slayden Constructors, you won’t just work on projects — you’ll help deliver critical water infrastructure that protects communities across the Pacific Northwest. Whether in the field or in our offices, our people are trusted, supported, and empowered to do their best work. If you’re ready to build your career with a team that values safety, craftsmanship, and collaboration, your future starts here.
For over 40 years, we’ve dedicated ourselves to job site safety, with a record of success that speaks for itself. Slayden is committed to the safety of every employee, including subcontractors and owner personnel. Our employees understand that there’s a safe way to handle every situation whether that’s on the job site or off duty. Safety means more than being safe on a job site, it means you go home to your family daily.
Slayden's recognition with regional and national safety awards proves our commitment to your personal and professional safety.
Slayden Constructors and Jacobs Engineering recently completed a $78 million expansion of the Robert A. Duff Water Treatment Plant for the Medford Water Commission. The project boosts capacity from 45 to 65 million gallons per day and adds advanced filtration, a new reservoir, a modern pump station, and seismic‑resilient redundancies. This upgrade strengthens long‑term water reliability for Medford and the greater Rogue Valley, supporting regional growth and public health.
Read More
Slayden earned First Place in the 2025 AGC Construction Safety Excellence Awards (CSEA) in the Utility Infrastructure Category — Under 500,000 Work Hours.
Read More
Slayden has been concentrating its recruitment efforts at university career fairs renowned for their construction programs. During the fall and winter career fairs, Slayden worked hard to recruit and place nine interns for the summer of 2024. The students come from George Fox University, Boise State, Oregon State University (OSU), Oregon Institute of Technology, and Boston University. Slayden is excited to welcome Nina Le Brun, Lauren Wilder, Jaden Notehelfer, Owen Haugh, Jayce Clevenger, Nate Smith, Kellen Westbrooks, Hannah Song, and Evan Dela Cruz to its internship program.
Read More
