Full website coming 2024

Building better, always.

Uncommon design-build expertise, for a world of opportunities.

Because water is the most important resource

We design and build unique and important water-resource and energy projects with a mix of creative brilliance and attention to detail.

A large dam waterfall with blue water and a beautiful scenery
Services Spotlight

Dams & Infrastructure

We understand the protection of our water supply and communities is paramount therefore we are leveraging our planning, design and construction expertise to work together with dam owners and regulators to support water management infrastructure projects.

Men working inside of a round hydro energy worksite
Services Spotlight


We partner with clients facing ambitious renewable energy goals to economically integrate reliable and cost-effective infrastructure from upgrading hydroelectric facilities to close-loop pumped storage projects.

Aerial shot of a agriculture site with a beautiful blue river
Services Spotlight

Fish & Aquatic Resources

From challenging fish passage facilities to award-winning hatcheries, we have a legacy of helping plan, design, build and operate facilities addressing water conservation strategies while enhancing fisheries and aquatic resources.  

Damn construction in process with large piping and pulleys
Services Spotlight

Design-Build Excellence

McMillen was founded on the belief that a truly integrated team requires both design and construction to be handled in house. To that end, we can bring project synergy into a single point of responsibility resulting in time and cost savings.

We're hiring

We're always looking for brilliant people to join our diverse, team-driven culture.


Learn more

Get in touch.

Contact us