Update: Boulder Canyon Trail Closure Due to Rockfall Mitigation Work (2025)

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.

Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $124,000, making it one of the largest collaborative efforts in the county’s history.

The application deadline is June 6, 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 5 business days.

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Data from the 2025 Boulder County Community Survey shows that 59% of respondents rated this service as “important” or “very important.” The survey, conducted every two years, received 5,403 responses from residents across the county.

Climate considerations are central to this effort. Boulder County’s 2025 Climate Action Plan sets targets of reducing greenhouse gas emissions 59% below 2005 levels by 2030. This project contributes to those goals through energy efficiency improvements, renewable energy integration, and reduced vehicle miles traveled.