NW Construction Earns 2025 MCA Environmental Excellence Award: Best Environmental Project

We’re excited to share that NW Construction, Inc. has received the 2025 MCA Environmental Excellence Award in the “Best Environmental Project” category for the St. Mary Canal Siphon Replacement!

The Saint Mary Canal Siphon Replacement Project delivered critical environmental benefits by restoring a reliable water supply to the Milk River Basin, an area supporting wetlands, riparian corridors, and wildlife habitats across more than 700 miles.

The siphon failure in 2024 disrupted water flows essential to sustaining migratory bird populations, native fish species, and vegetation along the river corridor. By rapidly replacing the failed infrastructure, the project helped prevent long-term ecological degradation.

The new 90-inch steel pipeline improves hydraulic efficiency and reduces the risk of future failures that could lead to erosion, sedimentation, or habitat loss. The canal was reshaped and lined with reinforced HDPE and rock protection to stabilize banks and reduce turbidity, directly benefiting downstream ecosystems. Air release valves and underdrain systems were incorporated to maintain flow stability and minimize environmental stress.

We’re deeply grateful to the Milk River Joint Board of Control, Bureau of Reclamation, project partners, and our dedicated crew who overcame harsh winter conditions and remote challenges to make this possible. This award is a shared victory for the farmers, residents, and ecosystems that rely on the Milk River Basin.