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 Board of County Commissioners will review progress on this initiative at their May 4 business meeting. Agenda items and supporting documents are posted on the Boulder County website 72 hours before each meeting.
The Bald Mountain open space property encompasses 238 acres and features 5 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.
How to Participate
Colorado state law requires all counties to provide these services to eligible residents. Boulder County exceeds minimum state requirements by offering expanded hours, multilingual support, and online access. In 2024, the county received a state award for excellence in service delivery.
The project includes improvements along Left Hand Canyon Drive between Niwot and the intersection with SH-7 / Ute Highway. Construction is scheduled to begin in June 2026 with completion expected within 12 months.
What You Need to Know
Safety data from the Niwot area shows 31 reported incidents in the past 12 months, a 30% change from the previous year. The Sheriff’s Office has increased patrols along Left Hand Canyon Drive and added community outreach programs in response to resident feedback.
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