Environmental Groups Sue to Block Road Expansion in Montana Grizzly Habitat

2 min readSources: Courthouse News

Environmental groups are challenging the Forest Service’s removal of road density limits in Montana's Bitterroot National Forest.

Why it matters: The outcome may affect road construction, wildlife protection, and regulatory compliance for forest management. Environmental lawyers and natural resource stakeholders are closely watching how courts balance development and habitat conservation in protected federal lands.

  • USDA seeks to repeal the 2001 Roadless Area Conservation Rule, impacting 60M acres of national forests.
  • The Bitterroot National Forest spans 1.587M acres in Montana and Idaho, home to grizzlies and trout.
  • Environmental groups argue new roads threaten sensitive habitats and violate conservation commitments.
  • A federal judge halted the Gold Butterfly Project over insufficient analysis of grizzly bear impacts.

Legal challenges are mounting over plans to expand road access in the Bitterroot National Forest, with environmental groups urging courts to block the Forest Service’s removal of strict road density restrictions in this key wildlife habitat.

  • The USDA's proposed repeal of the 2001 Roadless Area Conservation Rule threatens protections for nearly 60 million acres—including 1.587 million in the Bitterroot.
  • These areas are considered critical for grizzly bears and bull trout, both vulnerable to increased human activity and habitat fragmentation.
  • "Allowing an increase in the number of roads on the Bitterroot National Forest will further diminish the wild character of the forest, fragment wildlife habitat, and irreparably harm existing ecosystems," said Jim Miller, president of Friends of the Bitterroot.
  • The issue gained urgency after U.S. Magistrate Judge Kathleen DeSoto halted the 55,000-acre Gold Butterfly Project in April 2026, citing inadequate analysis of risks to grizzly bears. Most grizzlies are killed within a third of a mile of a road, noted Mike Garrity of Alliance for the Wild Rockies.
  • The U.S. Fish and Wildlife Service also recently began evaluating the restoration of grizzly bears in the Bitterroot Ecosystem, with final findings expected by November 2026 (read more).

The case highlights the continuing legal and regulatory tension between conservation imperatives and federal land management priorities in the western U.S.

By the numbers:

  • 60M acres — National forests impacted by the proposed rule repeal
  • 1.587M acres — Size of Bitterroot National Forest
  • 55,000 acres — Area affected by the halted Gold Butterfly Project

What's next: The U.S. Fish and Wildlife Service plans to release a final Environmental Impact Statement on grizzly restoration by November 2026.