Wilderness Watch, with our partners at Heartwood, filed a lawsuit on September 30, 2025 challenging the Forest Service’s authorization of a 2.5-mile motorized road through the heart of the Lusk Creek Wilderness in the Shawnee National Forest of southern Illinois. We’re represented by counsel from Great Rivers Environmental Law Center.
At 6,352 acres, the Lusk Creek Wilderness is known for its rugged canyons, diverse topography, and high-quality streams, including Lusk Creek itself. The Wilderness protects broad, relatively flat ridge tops and terraces that overlook narrow ravines and deep sandstone gulches.
This litigation isn’t just about a road—it’s about protecting the very idea of Wilderness that Howard Zahniser, author of the 1964 Wilderness Act, called an “enduring resource,” to be safeguarded by restraint. As Zanhiser put it, Wildernesses like Lusk Creek are areas “so managed as to be left unmanaged—areas that are undeveloped by man’s mechanical tools.”
The Forest Service’s decision would carve and maintain a 12-foot-wide, 2.5-mile-long road and permit private vehicle use across the heart of the Lusk Creek Wilderness so a set of landowners—nearly all with properties completely outside the wilderness boundary—can drive to their tracts. The agency has authorized heavy equipment to remove brush and trees; build ditches, culverts, and other drainage features; and install gravel surfacing to create a year-round, all-weather roadway. Such engineered additions are precisely the “structures or installations” Congress excluded from Wilderness, and the intended private motor traffic underscores that this is not incidental administration but a through-wilderness driveway.
The litigation relies on three distinct legal claims.
First, the Wilderness Act claim relies on Section 4(c)’s prohibition on roads, motor vehicles, motorized equipment, and installations in designated Wilderness, subject only to narrow exceptions. The Act does not authorize a permanent road for private access and does not create private access rights for properties outside the Wilderness. Authorizing a year-round vehicle corridor with ongoing maintenance for private ingress is therefore a prohibited road and motorized use in violation of Section 4(c).
Second, the National Environmental Policy Act (NEPA) claim challenges the Forest Service’s reliance on a categorical exclusion to approve a drivable, engineered corridor while skipping the more rigorous environmental analysis and public participation required in an Environmental Assessment or Environmental Impact Statement. A categorical exclusion applies only if no extraordinary circumstances exist, and congressionally designated Wilderness is itself an extraordinary circumstance. The agency’s own materials acknowledge that motor access, heavy equipment, and associated infrastructure would degrade undeveloped character and solitude—the very wilderness qualities the law protects—and approving the project by categorical exclusion short-circuited NEPA’s requirement that agencies take a “hard look” at environmental consequences.
Third, the access-law claim asserts that when private tracts are involved, the agency must make parcel-specific findings about what “adequate access” means and must evaluate reasonable, less intrusive alternatives, especially options outside Wilderness or non-motorized access. In this case, the Forest Service bundled multiple owners, relied on decades-old cost figures to dismiss outside-wilderness routes, and failed to analyze seasonal or non-motor alternatives. Because the primary parcel served lies entirely outside the Wilderness, treating the entire corridor as if both parcels required a through-wilderness vehicle road is unlawful, and the law allows only adequate access—not a permanent road through a congressionally designated Wilderness.
Wilderness Watch is asking the court to set aside the approval, require a lawful, transparent, parcel-specific, up-to-date access analysis that genuinely evaluates non-wilderness and non-motorized options, and ensure management consistent with the Wilderness Act’s bright-line protections. We are asking the court to prohibit work on the road while the case proceeds to prevent irreparable harm to the landscape.
The Lusk Creek Wilderness needs to remain wild and undeveloped as Congress intended. In the words of Zanhiser—and the Wilderness Act itself—the value of Lusk Creek, and every Wilderness, is to stand “in contrast with those areas where man and his own works dominate the landscape,” one “where the earth and its community of life are untrammeled by man.” Building a road across the heart of Lusk Creek is antithetical to that purpose.
Photo by Heartwood: Resource damage in the Lusk Creek Wilderness.
