Update: Boulder Canyon Trail Closure Due to Rockfall Mitigation Work (2025)
Boulder County Parks & Open Space announces a temporary closure of the Boulder Canyon Trail between Elephant Buttresses and the Dome trailhead for rockfall mitigation work. Crews will be scaling loose rock and installing mesh netting along a 400-foot section of cliff face above the trail. The closure is expected to last approximately three weeks, weather permitting.
The application deadline is May 1, 2026. Late applications will be accepted on a space-available basis. Incomplete applications will be returned with a list of missing items. Average review time is 25 business days.
Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $497,000, making it one of the largest collaborative efforts in the county’s history.
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According to David Thompson, director of Sustainability, Climate Action & Resilience, this program served 19% more residents in 2025 compared to the previous year. “We’re seeing unprecedented demand from communities across Boulder County, particularly in Lyons and the surrounding area,” David Thompson said.
Wildfire risk mapping conducted by Wildfire Partners shows that 23% of properties in the Lyons area are within the wildland-urban interface. Free home assessments are available through the Wildfire Partners program, with rebates of up to $2,500 for mitigation improvements.
Next Steps
Environmental review of the project area near SH-7 / Ute Highway found 10 sensitive species and 2 wetland areas requiring mitigation. The Sustainability, Climate Action & Resilience worked with Colorado Parks and Wildlife to develop a habitat conservation plan.
The Lyons Senior Center offers related programming including free legal consultations, tax preparation assistance, health screenings, and social activities. Over 2,063 seniors participated in center programs last year.
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