After an expedited environmental review, the Bureau of Land Management on June 27 approved NorthWestern Energy’s planned 74-mile natural gas pipeline expected to slice through several miles of northeastern Jefferson County.
Preparatory activities, including surveys and engineering assessments, are expected to begin this year, with construction set to occur in phases from early 2026 through fall 2029.
The pipeline route, which also goes through East Helena’s new Prickly Pear Park, includes approximately nine miles of BLM-managed public lands and will follow the existing corridor of Phillips 66 Yellowstone pipeline to minimize ground disturbance and ecological disruption.
“By responsibly developing energy resources on public lands, we’re helping to secure a reliable, diverse energy future for the nation while supporting jobs and local economies,” said BLM Acting Director Bill Groffy.
The BLM approved NWE’s proposed Helena to Three Forks pipeline following an accelerated 14-day environmental review process in line with the national energy emergency declared by President Donald J. Trump.
Due to the reduced review timeframe, the BLM said it was unable to closely examine several potential concerns, including the impact on fire management, wildlife, livestock grazing, public safety, and recreation opportunities.
Its report did analyze in detail the likely impact on soils, vegetation, cultural resources, and special areas such as the Lewis & Clark National Historic Trail.
