Boulder Canyon Trail Closure Due to Rockfall Mitigation Work — Longmont Area
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.
Water quality monitoring at 11 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2024. The Public Works publishes quarterly water quality reports on the Boulder County website.
The project includes improvements along 75th Street between Gunbarrel and the intersection with Baseline Road. Construction is scheduled to begin in May 2026 with completion expected within 13 months.
Contact Information
Public comment on this matter can be submitted through the Boulder County online portal, by email to Public Works, or in person at the next Board of County Commissioners meeting. Written comments received by 5:00 PM the day before the hearing will be included in the public record.
The Anne U. White open space property encompasses 1,249 acres and features 11 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.
Details
Transportation access remains a key concern. Boulder County’s Via mobility program provides door-to-door transit service for residents in Gunbarrel and surrounding communities who cannot access fixed-route bus service. RTD routes B, J, and BOLT serve major corridors.
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.
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