McMillen, LLC is a woman owned 8(a) firm based in Boise, Idaho, providing a unique business organization that maintains engineering, environmental and natural resources, and construction services within one firm. Since our inception, McMillen, LLC has strived to build design capabilities in multiple market sectors. From our roots in the water resources, hydropower and fisheries engineering markets, we have expanded to serve the construction, transportation, agriculture, environmental, and water / wastewater markets.

McMillen was recently characterized by the Small Business Administration, Norman Proctor, Boise SBA District Director, as an "...example of how vision, hard work, integrity, and strategic planning can lead to success."

Case Studies

US Army Corps of Engineers, Portland District, Elk Creek Dam Removal and Stream Restoration
Design-Build

Confederated Tribes of the Umatilla Indian Reservation, Full Channel Fish Ladder
Design-Build

Puget Sound Energy, Baker River Fish Hatchery
Design-Build

PacifiCorp, Yale Bull Trout Reduction Entrainment Project
Design-Build

Trout Unlimited, Inc, On Call Projects
Design-Build